Product Description
A Series Short Pitch Precision Duplex Roller Chains & Bush Chains
| ISO/ANSI/ DIN Chain No. |
Chain No. | Pitch
P |
Roller diameter
d1max |
Width between inner plates b1min mm |
Pin diameter
d2max |
Pin length | Inner plate depth h2max mm |
Plate thickness
Tmax |
Transverse Pt mm |
Tensile strength
Qmin |
Average tensile strength Q0 kN |
Weight per meter q kg/m |
|
| Lmax mm |
Lcmax mm |
||||||||||||
| 140-2 | 28A-2 | 44.450 | 25.40 | 25.22 | 12.70 | 103.3 | 107.9 | 41.00 | 5.60 | 48.87 | 344.80/78364 | 445.0 | 15.14 |
*Bush chain: d1 in the table indicates the external diameter of the bush
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CHINAMFG which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CHINAMFG paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CHINAMFG the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CHINAMFG flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CHINAMFG Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CHINAMFG range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Usage: | Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain |
|---|---|
| Material: | Alloy |
| Surface Treatment: | Polishing |
| Feature: | Heat Resistant |
| Chain Size: | 1045, Stainless Steel , Q235, Brass |
| Structure: | Roller Chain |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the weather-resistant properties of car parking chains, and how do they perform in outdoor environments?
Car parking chains are designed to have weather-resistant properties, making them suitable for outdoor environments. These weather-resistant features ensure that the chains can withstand various weather conditions and continue to function effectively. Here are the key weather-resistant properties of car parking chains:
1. Corrosion Resistance: Many car parking chains, especially those made from stainless steel or aluminum, offer excellent corrosion resistance. This property prevents the chains from rusting or deteriorating when exposed to rain, humidity, or salty air in coastal areas.
2. Coatings and Treatments: Some parking chains are coated with protective materials, such as zinc or epoxy coatings, to provide an additional layer of protection against moisture and weather elements.
3. UV Resistance: Parking chains made from materials like PVC or certain plastics are UV-resistant, ensuring that they can withstand prolonged exposure to sunlight without fading or becoming brittle.
4. All-Weather Performance: Weather-resistant parking chains are designed to function in various weather conditions, including rain, snow, and extreme temperatures. They maintain their structural integrity and performance throughout the seasons.
5. Sealed Joints: In some parking chains, the joints or connections are sealed to prevent water or moisture from seeping inside, ensuring that the chain remains free from rust or other forms of degradation.
6. High-Quality Materials: Weather-resistant car parking chains are typically made from high-quality materials that are specifically chosen for their ability to withstand outdoor environments.
7. Regular Maintenance: While parking chains are designed to be weather-resistant, regular maintenance is essential to ensure their long-term performance in outdoor environments. Periodic cleaning, lubrication, and inspections help identify and address any potential issues.
Overall, car parking chains with weather-resistant properties are designed to endure outdoor conditions and provide reliable access control in various weather scenarios. Facility managers should choose chains with appropriate weather-resistant features based on the specific environmental conditions of their parking facility.
What materials are commonly used to manufacture car parking chains, and how do they affect durability and performance?
Car parking chains are typically manufactured using various materials, and the choice of material can significantly impact the durability and performance of the chains. The most common materials used include:
1. Steel: Steel is the most prevalent material for parking chains due to its high strength and durability. It can withstand heavy loads and resist wear and tear, making it suitable for both indoor and outdoor use. Steel chains are often coated or galvanized to enhance their corrosion resistance and extend their lifespan.
2. Stainless Steel: Stainless steel chains offer excellent corrosion resistance, making them ideal for parking areas in coastal or high-humidity environments. They are less prone to rust and maintain their appearance over time.
3. Plastic or PVC: Plastic or PVC chains are lightweight and cost-effective alternatives to metal chains. While they may not be as strong as steel, they are suitable for low-traffic areas and temporary parking setups. However, they may be less durable and require more frequent replacement compared to metal chains.
4. Brass: Brass chains are sometimes used for their aesthetic appeal, as they have a distinct gold-like appearance. However, they are not as commonly used as steel or stainless steel due to their higher cost and lower strength.
5. Aluminum: Aluminum chains are lightweight and resistant to corrosion, making them suitable for outdoor use. However, they are not as strong as steel or stainless steel, and their use is often limited to less demanding applications.
The choice of material depends on several factors, including the intended usage, environmental conditions, budget constraints, and aesthetic preferences. Steel and stainless steel are the most popular choices for parking chains as they offer a good balance of strength, durability, and resistance to various weather conditions. Plastic or PVC chains are more suitable for temporary setups or situations where cost is a primary concern.
Regular maintenance and proper care, regardless of the material used, will also contribute to the longevity and performance of car parking chains. Periodic inspections, lubrication, and prompt repair of any damage are essential to ensure the chains function effectively and provide reliable access control in parking facilities.
What is a car parking chain, and how is it used in parking facilities and garages?
A car parking chain is a mechanical barrier used in parking facilities and garages to control vehicle access and prevent unauthorized entry. It consists of a sturdy metal chain suspended across the entrance or exit of a parking area.
The chain is connected to two sturdy posts or walls on either side of the entrance. When lowered, the chain obstructs the passage of vehicles, restricting their entry or exit. Conversely, when lifted, it allows authorized vehicles to pass through.
Parking chains are commonly used in places where a more sophisticated access control system like a gate or a barrier arm may not be necessary. They offer a simple and cost-effective solution for managing vehicle flow.
Typically, parking facility attendants or authorized personnel are responsible for controlling the car parking chain. They manually raise and lower the chain using a key or a specialized lock system.
In some cases, modern parking chains may be automated and integrated with access control systems. This can include keycard readers, electronic passes, or even remote-controlled mechanisms, making it more convenient for authorized users to enter and exit the parking area.
Overall, car parking chains serve as a physical deterrent to prevent unauthorized access and ensure better control over vehicle movement in parking facilities and garages.
“`
editor by CX 2024-03-26
China wholesaler Martin Gearbox Short-Pitch 36A-2 Precision Industrial Machinery Roller Chains for Car Parking and Excavator
Product Description
Basic Info
|
ANSI NO: |
180-2R |
DIN/ISO NO: |
36A-2 |
|
Pitch (mm): |
57.1500 |
Roller Diameter(mm): |
35.71 |
|
Inner Plate Width (mm): |
35.48 |
Average Tensile Strength: |
722.2KN |
|
Pin Diameter(mm): |
17.46 |
Plate Thickness (mm): |
7.20 |
|
Weight / Meter (kgs/m): |
13.45 |
Chain Size: |
5F, 10F, 5Meters |
|
Origin: |
HangZhou China |
HS Code: |
7315119000 |
1. Providing 10 series more than 8000 models of chains,Heavy duty engineering chains, oil field chains, heavy duty port crane chains, metallurgy conveyor chains, ultra-high tension escalator chains, mining chains, etc, and customized solutions.
2. More than 80% of our roller chain are exported to all over the world, We are serving customers of top 5 of world famous manufacturers , and more than 90% of our turnover are from the cooperation with the manufacturers in the world.
3. Having advanced online inspection for automatic assembly lines.
4. Having nation level Enterprise Technology Center, we cost no less than 13% of our annual turnover investment in R&D each year.
5. Having our own Standardization Management Committee in our company, and participated in the formulation and modification of the roller chain standards of the People’s Republic of China.
SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc
Our CHINAMFG chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CHINAMFG for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.
Workshop Show
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CHINAMFG which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CHINAMFG paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CHINAMFG the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CHINAMFG flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
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The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CHINAMFG range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
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Can car parking chains be retrofitted into existing parking facilities to upgrade their security measures?
Yes, car parking chains can be retrofitted into existing parking facilities to upgrade their security measures and access control. Retrofitting parking chains is a practical and cost-effective solution for improving security without the need for major infrastructure changes. Here’s how it can be done:
1. Site Assessment: Conduct a thorough site assessment to identify suitable locations for installing the parking chains. Consider factors such as traffic flow, vehicle types, and entry/exit points.
2. Choose the Right Chains: Select parking chains that are compatible with the existing facility and meet the security requirements. Consider factors like traffic volume, weather resistance, and automation options.
3. Anchor Points: Identify and prepare sturdy anchor points on either side of the entrance or exit where the chains will be installed. Ensure the anchors are securely attached to the ground or wall.
4. Installation: Install the parking chains according to the manufacturer’s instructions, ensuring proper tension and alignment. Consider automatic systems for smoother access control.
5. Integration with Access Control: If using automated parking chains, integrate them with access control systems like key cards, remote controls, or license plate recognition technology.
6. Signage: Install clear signage to inform users about the presence of parking chains and how to operate them.
7. Testing: Test the parking chains’ movement to ensure they raise and lower smoothly without obstructions or jams.
8. Training: Provide training to parking attendants or personnel responsible for operating the chains to ensure proper use and maintenance.
9. Regular Maintenance: Develop a maintenance schedule and conduct regular inspections to keep the parking chains in good working condition.
10. Consider Advanced Features: Depending on the facility’s requirements, consider retrofitting smart parking chains with advanced features like mobile app integration or reservation systems for enhanced security and convenience.
Retrofitting car parking chains allows existing parking facilities to upgrade their security measures efficiently, enhancing access control and providing a safer parking environment for users.
Are there any regulations or guidelines regarding the installation and use of car parking chains in public and private parking lots?
Yes, the installation and use of car parking chains in public and private parking lots are subject to various regulations and guidelines to ensure safety, accessibility, and compliance with local laws. Here are some common considerations:
1. Building Codes and Zoning Regulations: Before installing parking chains, property owners or operators must comply with local building codes and zoning regulations that dictate the types of barriers and access control mechanisms allowed in specific areas.
2. Accessibility Requirements: Parking facilities, including those using parking chains, must comply with accessibility standards, ensuring that they are accessible to individuals with disabilities. This may involve providing designated accessible parking spaces and ensuring barrier-free access to the facility.
3. Height and Clearance: There are often regulations regarding the height of parking chains to prevent them from interfering with vehicles and causing damage. Adequate clearance must be maintained to ensure smooth entry and exit of vehicles.
4. Visibility and Signage: Proper signage should be displayed to inform users about the parking control system in place and to direct them on how to operate it. Adequate lighting should also be provided to ensure good visibility, especially during low-light conditions.
5. Safety Measures: Safety should be a priority when installing parking chains. This includes ensuring that the chain and its supports are securely anchored to prevent accidents or unauthorized removal.
6. Fire Safety Regulations: In certain areas, there may be specific fire safety regulations that dictate the use of specific materials or the inclusion of fire lanes for emergency vehicle access.
7. Permits and Approvals: Depending on the location and local regulations, obtaining permits and approvals from relevant authorities may be necessary before installing parking chains.
8. Compliance with Industry Standards: Manufacturers and installers of parking chains should ensure that their products meet industry standards for quality, durability, and safety.
It is essential for property owners, facility managers, and operators to familiarize themselves with the specific regulations and guidelines in their area and to work with reputable suppliers and installers to ensure compliance and the safe and effective use of car parking chains.
What are the standard sizes and configurations available for car parking chains?
Car parking chains come in various sizes and configurations to accommodate different parking facility needs. The standard sizes and configurations include:
1. Length: Parking chains are available in different lengths to span across various entrance or exit widths. Common lengths range from 10 feet (3 meters) to 20 feet (6 meters) to cover typical driveway widths.
2. Link Diameter: The diameter of the individual chain links can vary, with common sizes being around 1/4 inch (6mm) to 3/8 inch (10mm). Thicker links provide additional strength and durability.
3. Material: Parking chains are usually made from sturdy metals like steel, which ensures they can withstand outdoor conditions and the weight of vehicles.
4. Color: While the most common color for parking chains is standard metal silver, some manufacturers offer chains with colored coatings for aesthetic purposes or enhanced visibility.
5. Configurations: There are two primary configurations of parking chains:
- Fixed: Fixed parking chains are permanently mounted on sturdy posts or walls on either side of the entrance or exit. They are not adjustable in length and remain in place at all times.
- Retractable: Retractable or removable parking chains can be raised or lowered as needed. They are connected to retractable posts or bollards, allowing attendants or automated systems to control access by raising or lowering the chain.
It’s essential to choose the appropriate size and configuration based on the specific requirements of the parking facility, the expected volume of traffic, and the level of security needed.
editor by CX 2023-10-18
China OEM Martin Gearbox Short-Pitch 36A-2 Precision Industrial Machinery Roller Chains for Car Parking and Excavator
Product Description
Basic Info
|
ANSI NO: |
180-2R |
DIN/ISO NO: |
36A-2 |
|
Pitch (mm): |
57.1500 |
Roller Diameter(mm): |
35.71 |
|
Inner Plate Width (mm): |
35.48 |
Average Tensile Strength: |
722.2KN |
|
Pin Diameter(mm): |
17.46 |
Plate Thickness (mm): |
7.20 |
|
Weight / Meter (kgs/m): |
13.45 |
Chain Size: |
5F, 10F, 5Meters |
|
Origin: |
HangZhou China |
HS Code: |
7315119000 |
1. Providing 10 series more than 8000 models of chains,Heavy duty engineering chains, oil field chains, heavy duty port crane chains, metallurgy conveyor chains, ultra-high tension escalator chains, mining chains, etc, and customized solutions.
2. More than 80% of our roller chain are exported to all over the world, We are serving customers of top 5 of world famous manufacturers , and more than 90% of our turnover are from the cooperation with the manufacturers in the world.
3. Having advanced online inspection for automatic assembly lines.
4. Having nation level Enterprise Technology Center, we cost no less than 13% of our annual turnover investment in R&D each year.
5. Having our own Standardization Management Committee in our company, and participated in the formulation and modification of the roller chain standards of the People’s Republic of China.
SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc
Our CHINAMFG chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CHINAMFG for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.
Workshop Show
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CHINAMFG which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CHINAMFG paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CHINAMFG the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CHINAMFG flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CHINAMFG Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CHINAMFG range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
| Production Scope: | Parts Production Line |
|---|---|
| Condition: | New |
| Automation: | Automation |
| Samples: |
US$ 30/Meter
1 Meter(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
|
Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
|---|
| Payment Method: |
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|---|---|
|
Initial Payment Full Payment |
| Currency: | US$ |
|---|
| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
|---|
Can car parking chains be integrated with access control systems, such as key cards or remote controls?
Yes, car parking chains can be integrated with access control systems, allowing for more efficient and convenient vehicle access in parking facilities. Integration with access control systems offers several benefits:
1. Key Cards: Parking chains can be linked to electronic access control systems that use key cards or RFID tags. Authorized users are provided with key cards that they can swipe or tap at the entrance to raise the chain, granting them access to the parking area.
2. Remote Controls: In automated parking chains, remote controls can be used to raise or lower the chains. This is particularly useful for parking attendants or personnel who can remotely manage vehicle access from a central location, reducing the need for physical presence at the entrance.
3. Electronic Passes: Some parking facilities issue electronic passes to authorized users. These passes can be read by sensors at the entrance, automatically raising the chain to allow access without the need for manual operation.
4. License Plate Recognition: Advanced access control systems may use license plate recognition technology to automatically identify and grant access to pre-registered vehicles as they approach the entrance, eliminating the need for physical cards or passes.
5. Time-Based Access: Access control systems can be configured to grant access only during specific times or days. This is particularly useful for parking facilities with restricted access hours or reserved parking spaces for certain users.
6. Enhanced Security: Integration with access control systems improves security by ensuring that only authorized vehicles can enter the parking area, reducing the risk of unauthorized access or parking violations.
7. Efficient Traffic Management: Automated access control systems can process vehicles more quickly, reducing waiting times and traffic congestion at the entrance during peak hours.
By integrating car parking chains with access control systems, parking facilities can enhance security, improve user experience, and efficiently manage vehicle access, making it a popular choice for modern parking facilities.
How do I choose the right car parking chain for my parking facility based on traffic volume and vehicle types?
Choosing the right car parking chain for your parking facility involves considering the traffic volume and types of vehicles that will use the facility. Here are the key factors to consider:
1. Traffic Volume:
– For high-traffic areas with a significant number of vehicles entering and exiting frequently, consider a durable and heavy-duty parking chain made from materials like steel or stainless steel. These materials can withstand the wear and tear associated with frequent use.
– For low-traffic areas or temporary parking setups, lighter materials like plastic or PVC chains may be suitable as they are more cost-effective.
2. Vehicle Types:
– For standard passenger cars and small vehicles, most parking chains should be sufficient. However, consider the length of the chain to accommodate wider entry points.
– For larger vehicles, such as trucks or buses, ensure that the parking chain is robust enough to support their weight and size. Opt for heavy-duty chains with thicker links and higher load-bearing capacity.
3. Manual vs. Automatic:
– Manual parking chains operated by attendants may be suitable for smaller parking facilities with moderate traffic. They offer a cost-effective and simple access control solution.
– Automatic parking chains integrated with electronic access control systems are more suitable for larger parking facilities or those with high traffic volume. They provide faster and more efficient access control, minimizing waiting times.
4. Customization:
– Consider whether you require customized parking chains to fit specific dimensions or to align with the overall aesthetic of the parking facility.
5. Environmental Factors:
– For outdoor parking facilities exposed to harsh weather conditions, opt for materials that offer good corrosion resistance, such as stainless steel or aluminum.
6. Budget:
– Determine the budget available for the parking chains, considering both the initial investment and long-term maintenance costs.
7. Compliance:
– Ensure that the chosen parking chains comply with local regulations and accessibility requirements to provide a safe and accessible parking environment.
By carefully evaluating these factors, you can select the most appropriate car parking chain that aligns with your parking facility’s specific needs, ensuring efficient access control and a positive user experience for all vehicle types and traffic volumes.
How do car parking chains enhance security and prevent unauthorized access to parking areas?
Car parking chains serve as a physical barrier and play a crucial role in enhancing security and preventing unauthorized access to parking areas. Here’s how they achieve this:
1. Physical Deterrent: The presence of a chain across the entrance acts as a visual deterrent, dissuading unauthorized vehicles from attempting to enter the parking area. It signals that the area is controlled and restricted to authorized personnel only.
2. Controlled Access: Parking chains are manually operated or integrated with electronic access control systems. Only authorized users with the appropriate credentials, such as a key, keycard, or remote control, can raise or lower the chain to gain access.
3. Preventing Tailgating: In manual systems, parking attendants can visually verify each vehicle’s authorization before allowing entry. In automatic systems, the access control technology ensures that only one vehicle is allowed to pass at a time, preventing unauthorized vehicles from tailgating behind an authorized one.
4. Flexible Access Control: Some parking chains can be integrated with electronic access control systems that allow for fine-grained control. This includes time-based access permissions or specific access rights for different user groups, enhancing security measures.
5. Cost-Effective Security: Compared to more advanced access control systems like automated gates or barrier arms, parking chains offer a cost-effective security solution, making them suitable for various parking facilities.
6. Reducing Vehicle Theft: By restricting access to only authorized vehicles, parking chains reduce the risk of theft or unauthorized use of parked vehicles.
7. Minimizing Traffic Violations: Parking chains prevent unauthorized parking, reducing instances of illegal parking or traffic violations within the parking area.
8. Additional Security Measures: Parking chains can be complemented with other security features like surveillance cameras, lighting, and manned security personnel, creating a comprehensive security strategy for the parking facility.
In summary, car parking chains provide a simple yet effective method to control access, enhance security, and prevent unauthorized entry into parking areas, ensuring a safer and more controlled environment for vehicles and users.
editor by CX 2023-10-17
China best Martin Gearbox Short-Pitch 36A-2 Precision Industrial Machinery Roller Chains for Car Parking and Excavator
Product Description
Basic Info
|
ANSI NO: |
180-2R |
DIN/ISO NO: |
36A-2 |
|
Pitch (mm): |
57.1500 |
Roller Diameter(mm): |
35.71 |
|
Inner Plate Width (mm): |
35.48 |
Average Tensile Strength: |
722.2KN |
|
Pin Diameter(mm): |
17.46 |
Plate Thickness (mm): |
7.20 |
|
Weight / Meter (kgs/m): |
13.45 |
Chain Size: |
5F, 10F, 5Meters |
|
Origin: |
HangZhou China |
HS Code: |
7315119000 |
1. Providing 10 series more than 8000 models of chains,Heavy duty engineering chains, oil field chains, heavy duty port crane chains, metallurgy conveyor chains, ultra-high tension escalator chains, mining chains, etc, and customized solutions.
2. More than 80% of our roller chain are exported to all over the world, We are serving customers of top 5 of world famous manufacturers , and more than 90% of our turnover are from the cooperation with the manufacturers in the world.
3. Having advanced online inspection for automatic assembly lines.
4. Having nation level Enterprise Technology Center, we cost no less than 13% of our annual turnover investment in R&D each year.
5. Having our own Standardization Management Committee in our company, and participated in the formulation and modification of the roller chain standards of the People’s Republic of China.
SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc
Our CZPT chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CZPT for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.
Workshop Show
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
|
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
|---|
| Warranty: | 1 Year |
|---|---|
| Transmission Type: | Flexible |
| Automatic Production Line: | Comprehensive |
| Samples: |
US$ 30/Meter
1 Meter(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
Can car parking chains be integrated with access control systems, such as key cards or remote controls?
Yes, car parking chains can be integrated with access control systems, allowing for more efficient and convenient vehicle access in parking facilities. Integration with access control systems offers several benefits:
1. Key Cards: Parking chains can be linked to electronic access control systems that use key cards or RFID tags. Authorized users are provided with key cards that they can swipe or tap at the entrance to raise the chain, granting them access to the parking area.
2. Remote Controls: In automated parking chains, remote controls can be used to raise or lower the chains. This is particularly useful for parking attendants or personnel who can remotely manage vehicle access from a central location, reducing the need for physical presence at the entrance.
3. Electronic Passes: Some parking facilities issue electronic passes to authorized users. These passes can be read by sensors at the entrance, automatically raising the chain to allow access without the need for manual operation.
4. License Plate Recognition: Advanced access control systems may use license plate recognition technology to automatically identify and grant access to pre-registered vehicles as they approach the entrance, eliminating the need for physical cards or passes.
5. Time-Based Access: Access control systems can be configured to grant access only during specific times or days. This is particularly useful for parking facilities with restricted access hours or reserved parking spaces for certain users.
6. Enhanced Security: Integration with access control systems improves security by ensuring that only authorized vehicles can enter the parking area, reducing the risk of unauthorized access or parking violations.
7. Efficient Traffic Management: Automated access control systems can process vehicles more quickly, reducing waiting times and traffic congestion at the entrance during peak hours.
By integrating car parking chains with access control systems, parking facilities can enhance security, improve user experience, and efficiently manage vehicle access, making it a popular choice for modern parking facilities.
What materials are commonly used to manufacture car parking chains, and how do they affect durability and performance?
Car parking chains are typically manufactured using various materials, and the choice of material can significantly impact the durability and performance of the chains. The most common materials used include:
1. Steel: Steel is the most prevalent material for parking chains due to its high strength and durability. It can withstand heavy loads and resist wear and tear, making it suitable for both indoor and outdoor use. Steel chains are often coated or galvanized to enhance their corrosion resistance and extend their lifespan.
2. Stainless Steel: Stainless steel chains offer excellent corrosion resistance, making them ideal for parking areas in coastal or high-humidity environments. They are less prone to rust and maintain their appearance over time.
3. Plastic or PVC: Plastic or PVC chains are lightweight and cost-effective alternatives to metal chains. While they may not be as strong as steel, they are suitable for low-traffic areas and temporary parking setups. However, they may be less durable and require more frequent replacement compared to metal chains.
4. Brass: Brass chains are sometimes used for their aesthetic appeal, as they have a distinct gold-like appearance. However, they are not as commonly used as steel or stainless steel due to their higher cost and lower strength.
5. Aluminum: Aluminum chains are lightweight and resistant to corrosion, making them suitable for outdoor use. However, they are not as strong as steel or stainless steel, and their use is often limited to less demanding applications.
The choice of material depends on several factors, including the intended usage, environmental conditions, budget constraints, and aesthetic preferences. Steel and stainless steel are the most popular choices for parking chains as they offer a good balance of strength, durability, and resistance to various weather conditions. Plastic or PVC chains are more suitable for temporary setups or situations where cost is a primary concern.
Regular maintenance and proper care, regardless of the material used, will also contribute to the longevity and performance of car parking chains. Periodic inspections, lubrication, and prompt repair of any damage are essential to ensure the chains function effectively and provide reliable access control in parking facilities.
What is a car parking chain, and how is it used in parking facilities and garages?
A car parking chain is a mechanical barrier used in parking facilities and garages to control vehicle access and prevent unauthorized entry. It consists of a sturdy metal chain suspended across the entrance or exit of a parking area.
The chain is connected to two sturdy posts or walls on either side of the entrance. When lowered, the chain obstructs the passage of vehicles, restricting their entry or exit. Conversely, when lifted, it allows authorized vehicles to pass through.
Parking chains are commonly used in places where a more sophisticated access control system like a gate or a barrier arm may not be necessary. They offer a simple and cost-effective solution for managing vehicle flow.
Typically, parking facility attendants or authorized personnel are responsible for controlling the car parking chain. They manually raise and lower the chain using a key or a specialized lock system.
In some cases, modern parking chains may be automated and integrated with access control systems. This can include keycard readers, electronic passes, or even remote-controlled mechanisms, making it more convenient for authorized users to enter and exit the parking area.
Overall, car parking chains serve as a physical deterrent to prevent unauthorized access and ensure better control over vehicle movement in parking facilities and garages.
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editor by CX 2023-09-11
China Hot selling Short-Pitch 16A Precision Industrial & Agricultural General Hardware Martin Sugar/Coal Machine/Car Parking Transmission Driving Roller Chains
Product Description
Basic Info
|
ANSI NO: |
80 |
DIN/ISO NO: |
16A |
|
Pitch (mm): |
25.40 |
Roller Diameter(mm): |
15.88 |
|
Pin Diameter(mm): |
7.92 |
Plate Thickness (mm): |
3.25 |
|
Inner Plate Width (mm): |
15.75 |
Average Tensile Strength: |
69.4KN |
|
Chain Size: |
5F, 10F, 5Meters |
Weight / Meter (kgs/m): |
2.60 |
|
Origin: |
HangZhou China |
HS Code: |
7315119000 |
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
| Warranty: | 1 Year |
|---|---|
| Transmission Type: | Flexible |
| Automatic Production Line: | Comprehensive |
| Certification: | ISO, CE, LR, ABS |
| Automation: | Automation |
| Flexible Production: | Intelligent Manufacturing |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Are there any cost-effective options for car parking chains without compromising on quality and reliability?
Yes, there are cost-effective options for car parking chains that still offer good quality and reliability. While premium materials like stainless steel may be more expensive, several alternatives provide a balance between affordability and performance. Here are some cost-effective options:
1. Galvanized Steel: Galvanized steel chains are coated with a layer of zinc to enhance their corrosion resistance. They are more affordable than stainless steel chains while still offering decent durability and weather resistance.
2. Plastic or PVC Chains: Plastic or PVC chains are often more budget-friendly than metal chains. While they may not be as durable as steel, they can be suitable for low-traffic areas or temporary parking setups.
3. Chain Accessories: Some manufacturers offer cost-effective chain accessories, such as chain hooks, connectors, and tensioners, without compromising on quality. These accessories are essential for proper chain installation and maintenance.
4. Recycled Materials: Some parking chains are made from recycled materials, which can be a cost-effective and eco-friendly option. Recycled steel or other materials can still offer satisfactory performance while reducing the demand for new resources.
5. Long-Lasting Materials: Investing in parking chains made from durable materials, even if slightly more expensive upfront, can be cost-effective in the long run. Chains that last longer and require less frequent replacement can result in cost savings over time.
6. Warranty and Support: Look for suppliers that offer warranties and reliable customer support. A good warranty can provide peace of mind and ensure you get the most value from your investment.
7. Buy in Bulk: If you need multiple parking chains, purchasing in bulk can often lead to discounts or cost savings.
When seeking cost-effective options for car parking chains, consider your specific needs and the expected usage of the chains. It’s essential to strike a balance between affordability and performance, ensuring that the chosen chains meet safety and reliability requirements for your parking facility.
Are there any regulations or guidelines regarding the installation and use of car parking chains in public and private parking lots?
Yes, the installation and use of car parking chains in public and private parking lots are subject to various regulations and guidelines to ensure safety, accessibility, and compliance with local laws. Here are some common considerations:
1. Building Codes and Zoning Regulations: Before installing parking chains, property owners or operators must comply with local building codes and zoning regulations that dictate the types of barriers and access control mechanisms allowed in specific areas.
2. Accessibility Requirements: Parking facilities, including those using parking chains, must comply with accessibility standards, ensuring that they are accessible to individuals with disabilities. This may involve providing designated accessible parking spaces and ensuring barrier-free access to the facility.
3. Height and Clearance: There are often regulations regarding the height of parking chains to prevent them from interfering with vehicles and causing damage. Adequate clearance must be maintained to ensure smooth entry and exit of vehicles.
4. Visibility and Signage: Proper signage should be displayed to inform users about the parking control system in place and to direct them on how to operate it. Adequate lighting should also be provided to ensure good visibility, especially during low-light conditions.
5. Safety Measures: Safety should be a priority when installing parking chains. This includes ensuring that the chain and its supports are securely anchored to prevent accidents or unauthorized removal.
6. Fire Safety Regulations: In certain areas, there may be specific fire safety regulations that dictate the use of specific materials or the inclusion of fire lanes for emergency vehicle access.
7. Permits and Approvals: Depending on the location and local regulations, obtaining permits and approvals from relevant authorities may be necessary before installing parking chains.
8. Compliance with Industry Standards: Manufacturers and installers of parking chains should ensure that their products meet industry standards for quality, durability, and safety.
It is essential for property owners, facility managers, and operators to familiarize themselves with the specific regulations and guidelines in their area and to work with reputable suppliers and installers to ensure compliance and the safe and effective use of car parking chains.
Can car parking chains be customized to fit specific parking space dimensions?
Yes, car parking chains can be customized to fit specific parking space dimensions. Manufacturers often offer customization options to cater to the unique requirements of different parking facilities. Here’s how parking chains can be customized:
1. Length Adjustment: Parking chains can be made to the exact length needed to span across the width of the entrance or exit of a specific parking space. This ensures a proper fit without any excess chain length that could lead to tangling or inconvenience.
2. Chain Link Size: The diameter and thickness of the individual chain links can be adjusted to match the desired strength and aesthetic preferences. Thicker links may be chosen for heavy-duty applications, while thinner links can be used for lighter traffic areas.
3. Color Options: Customization may extend to the color of the parking chain, with some manufacturers offering various color coatings or finishes to suit the parking facility’s design or branding requirements.
4. Retractable Mechanism: For parking areas that require flexible access control, parking chains can be integrated with retractable mechanisms, allowing them to be raised or lowered as needed.
5. Personalized Branding: In some cases, parking chains can be customized with logos or branding elements, particularly for commercial or corporate parking facilities.
6. Material and Coating: While most parking chains are made from steel for durability, specialized materials or coatings can be considered for unique environments, such as coastal areas with high corrosion potential.
Keep in mind that while customization offers tailored solutions, it may also affect the cost and lead time for manufacturing the parking chains. It’s essential to work with reputable manufacturers or suppliers who can provide guidance on the best customization options based on the specific needs of the parking facility.
editor by CX 2023-09-08
China Hot selling Chain Manufacturer 28A-2 a Series Short Pitch Precision Duplex Mechanical Industrial & Agricultural Driving Chains and Bush Chains for Forklift &Car Parking
Product Description
A Series Short Pitch Precision Duplex Roller Chains & Bush Chains
| ISO/ANSI/ DIN Chain No. |
Chain No. | Pitch
P |
Roller diameter
d1max |
Width between inner plates b1min mm |
Pin diameter
d2max |
Pin length | Inner plate depth h2max mm |
Plate thickness
Tmax |
Transverse Pt mm |
Tensile strength
Qmin |
Average tensile strength Q0 kN |
Weight per meter q kg/m |
|
| Lmax mm |
Lcmax mm |
||||||||||||
| 140-2 | 28A-2 | 44.450 | 25.40 | 25.22 | 12.70 | 103.3 | 107.9 | 41.00 | 5.60 | 48.87 | 344.80/78364 | 445.0 | 15.14 |
*Bush chain: d1 in the table indicates the external diameter of the bush
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.
CONSTRUCTION OF THE CHAIN
Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.
The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.
LUBRICATION
Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]
There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.
Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.
VARIANTS DESIGN
Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.
Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.
Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.
USE
An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.
Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.
WEAR
The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).
With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.
The lengthening due to wear of a chain is calculated by the following formula:
M = the length of a number of links measured
S = the number of links measured
P = Pitch
In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.
CHAIN STRENGTH
The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.
The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.
CHAIN STHangZhouRDS
Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.
ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Standard Sizes | ||||
| Size | Pitch | Maximum Roller Diameter | Minimum Ultimate Tensile Strength | Measuring Load |
|---|---|---|---|---|
| 25 | 0.250 in (6.35 mm) | 0.130 in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | 0.375 in (9.53 mm) | 0.200 in (5.08 mm) | 1,760 lb (800 kg) | 18 lb (8.2 kg) |
| 41 | 0.500 in (12.70 mm) | 0.306 in (7.77 mm) | 1,500 lb (680 kg) | 18 lb (8.2 kg) |
| 40 | 0.500 in (12.70 mm) | 0.312 in (7.92 mm) | 3,125 lb (1,417 kg) | 31 lb (14 kg) |
| 50 | 0.625 in (15.88 mm) | 0.400 in (10.16 mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | 0.750 in (19.05 mm) | 0.469 in (11.91 mm) | 7,030 lb (3,190 kg) | 70 lb (32 kg) |
| 80 | 1.000 in (25.40 mm) | 0.625 in (15.88 mm) | 12,500 lb (5,700 kg) | 125 lb (57 kg) |
| 100 | 1.250 in (31.75 mm) | 0.750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| 120 | 1.500 in (38.10 mm) | 0.875 in (22.23 mm) | 28,125 lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (25.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | 1.125 in (28.58 mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| 180 | 2.250 in (57.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | 2.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | 3.000 in (76.20 mm) | 1.875 in (47.63 mm) | 112,500 lb (51,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):
| Pitch (inches) | Pitch expressed in eighths |
ANSI standard chain number |
Width (inches) |
|---|---|---|---|
| 1⁄4 | 2⁄8 | 25 | 1⁄8 |
| 3⁄8 | 3⁄8 | 35 | 3⁄16 |
| 1⁄2 | 4⁄8 | 41 | 1⁄4 |
| 1⁄2 | 4⁄8 | 40 | 5⁄16 |
| 5⁄8 | 5⁄8 | 50 | 3⁄8 |
| 3⁄4 | 6⁄8 | 60 | 1⁄2 |
| 1 | 8⁄8 | 80 | 5⁄8 |
Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.
Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.
Roller chains made using ISO standard are sometimes called as isochains.
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
| Usage: | Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain |
|---|---|
| Material: | Alloy |
| Surface Treatment: | Polishing |
| Feature: | Heat Resistant |
| Chain Size: | 1045, Stainless Steel , Q235, Brass |
| Structure: | Roller Chain |
| Samples: |
US$ 0/Meter
1 Meter(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How do I install a car parking chain correctly and securely to ensure its proper functioning?
Proper installation is crucial to ensure the car parking chain operates correctly and securely. Follow these steps for a successful installation:
1. Site Assessment:
– Conduct a thorough site assessment to determine the best location for the parking chain. Consider factors such as traffic flow, visibility, and clearance requirements.
2. Choose the Right Chain:
– Select a parking chain that suits the specific needs of your parking facility, considering factors such as traffic volume, vehicle types, and environmental conditions.
3. Measurements:
– Measure the width of the entrance or exit where the chain will be installed to ensure you select the appropriate length of the chain.
4. Anchor Points:
– Identify and prepare sturdy anchor points on either side of the entrance or exit to mount the parking chain. Ensure the anchors are securely attached to the ground or wall to withstand the force applied by the chain.
5. Chain Height:
– Position the parking chain at an appropriate height to allow vehicles to pass underneath without obstruction. Ensure there is sufficient clearance for all types of vehicles that will use the parking facility.
6. Installation:
– Install the parking chain according to the manufacturer’s instructions. Use appropriate tools and equipment to ensure a secure and stable installation.
7. Secure Attachment:
– Double-check that the chain is securely attached to the anchor points, and there is no excessive slack or sagging.
8. Signage:
– Install clear and visible signage to inform users about the presence of the parking chain and how to operate it.
9. Testing:
– Test the parking chain’s movement to ensure it raises and lowers smoothly without any obstructions or jams.
10. Maintenance:
– Develop a maintenance schedule and conduct regular inspections to ensure the parking chain remains in good working condition. Lubricate the chain and address any issues promptly.
By following these installation steps and providing regular maintenance, you can ensure the car parking chain functions correctly and securely, providing efficient access control and enhancing the overall safety and convenience of your parking facility.
Are there any regulations or guidelines regarding the installation and use of car parking chains in public and private parking lots?
Yes, the installation and use of car parking chains in public and private parking lots are subject to various regulations and guidelines to ensure safety, accessibility, and compliance with local laws. Here are some common considerations:
1. Building Codes and Zoning Regulations: Before installing parking chains, property owners or operators must comply with local building codes and zoning regulations that dictate the types of barriers and access control mechanisms allowed in specific areas.
2. Accessibility Requirements: Parking facilities, including those using parking chains, must comply with accessibility standards, ensuring that they are accessible to individuals with disabilities. This may involve providing designated accessible parking spaces and ensuring barrier-free access to the facility.
3. Height and Clearance: There are often regulations regarding the height of parking chains to prevent them from interfering with vehicles and causing damage. Adequate clearance must be maintained to ensure smooth entry and exit of vehicles.
4. Visibility and Signage: Proper signage should be displayed to inform users about the parking control system in place and to direct them on how to operate it. Adequate lighting should also be provided to ensure good visibility, especially during low-light conditions.
5. Safety Measures: Safety should be a priority when installing parking chains. This includes ensuring that the chain and its supports are securely anchored to prevent accidents or unauthorized removal.
6. Fire Safety Regulations: In certain areas, there may be specific fire safety regulations that dictate the use of specific materials or the inclusion of fire lanes for emergency vehicle access.
7. Permits and Approvals: Depending on the location and local regulations, obtaining permits and approvals from relevant authorities may be necessary before installing parking chains.
8. Compliance with Industry Standards: Manufacturers and installers of parking chains should ensure that their products meet industry standards for quality, durability, and safety.
It is essential for property owners, facility managers, and operators to familiarize themselves with the specific regulations and guidelines in their area and to work with reputable suppliers and installers to ensure compliance and the safe and effective use of car parking chains.
What are the benefits of using a car parking chain compared to other parking control methods?
Car parking chains offer several advantages over other parking control methods:
- Cost-effectiveness: Parking chains are generally more affordable to install and maintain compared to more complex systems like automated gates or barrier arms.
- Simplicity: They provide a straightforward and easy-to-understand method for controlling vehicle access, requiring minimal training for attendants or personnel.
- Durability: Made from sturdy metal materials, parking chains are robust and can withstand various weather conditions and potential wear and tear.
- Flexibility: Parking chains can be used in various locations, including small parking lots, private driveways, or temporary event spaces, where a permanent gate system may not be feasible.
- Manual and Automated Options: Depending on the setup, parking chains can be operated manually by attendants or automated using electronic access control systems, offering convenience for users.
- Visual Deterrent: The presence of a chain across the entrance acts as a visual deterrent, dissuading unauthorized vehicles from attempting to enter the parking area.
While car parking chains are advantageous in many situations, they may not be suitable for high-traffic areas or locations where more sophisticated access control is necessary for security reasons. In such cases, other methods like automated gates, barrier arms, or ticket-based systems may be more appropriate.
“`
editor by CX 2023-08-22
China best Motorcycle Parts Industrial Transmission Gear Reducer Conveyor Parts Sky Stacker Car Parking Conveyor Transmission Hoisting Machinery Leaf Chains Ll40 Series
Product Description
|
ISO No.: |
LL1622/LL1644/LL1666/LL1688 |
Plate Lacing: |
2×2, 4×4, 6×6, 8×8 |
|
Pitch (mm): |
25.40 |
Plate Depth(mm): |
21.00 |
|
Pin Dia. (mm): |
8.28 |
Plate Thickness (mm): |
3.1 |
|
Material: |
Alloy Steel |
Weight / Meter (kg/m): |
1.52/2.90/4.30/5.71 |
|
Certification: |
ISO90001, SGS |
Special Treatment: |
Heat Treating, Polishing |
|
Trade Mark: |
SMCC or OEM |
HS Code: |
7315120000 |
LEAF CHAINS
Leaf chains are built of interlaced plates held together by rivet pins. They are built with the same high degree of precision as our roller chains. HKK Leaf chains are used for applications that require strong flexible linkage for transmitting motion or lift. Specially selected steel and unique heat treatment assures high strength and durability. The first number or numbers in leaf chains identifies the chain pitch, the last 2 numbers identify the chain’s lacing. New applications should use BL series leaf chains.
Leaf Chain is the most simple of steel chains, consisting only of link plates and pins. This chain generally has greater tensile strength than roller chains and runs over sheaves rather than sprockets. They are suitable for hanging, balancing or motion transmitting applications. Leaf chains are often used as counterweight chains for machine tools, elevator and oven doors, fork lift truck masts, spinning frames and similar lifting or balancing applications.
Plates are connected by pins and hold the tension loaded on the chain.
AL TYPE
Plate configuration and thickness are the same as ANSI G8 roller chain. Pin diameter is almost the same as ANSI G8 roller chain.
BL TYPE
BL Series leaf chains consist of link plates which are thicker and larger in contour than the AL Series link plates of the same pitch. The link plates have the same thickness as the link plates of the next larger pitch size in ANSI G8 roller chains. The pins have the same diameter as those of ANSI G8 roller chains of the next larger pitch.
For Applications That Required Strong Flexible Linkage | Ideal for Lifting Applications | Specially Selected Steel | Unique Heat Treatment Process
WHY CHOOSE US
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
|
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
|---|
| Standard or Nonstandard: | Standard |
|---|---|
| Application: | Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car |
| Surface Treatment: | Polishing |
| Samples: |
US$ 1/Piece
1 Piece(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
How do I install a car parking chain correctly and securely to ensure its proper functioning?
Proper installation is crucial to ensure the car parking chain operates correctly and securely. Follow these steps for a successful installation:
1. Site Assessment:
– Conduct a thorough site assessment to determine the best location for the parking chain. Consider factors such as traffic flow, visibility, and clearance requirements.
2. Choose the Right Chain:
– Select a parking chain that suits the specific needs of your parking facility, considering factors such as traffic volume, vehicle types, and environmental conditions.
3. Measurements:
– Measure the width of the entrance or exit where the chain will be installed to ensure you select the appropriate length of the chain.
4. Anchor Points:
– Identify and prepare sturdy anchor points on either side of the entrance or exit to mount the parking chain. Ensure the anchors are securely attached to the ground or wall to withstand the force applied by the chain.
5. Chain Height:
– Position the parking chain at an appropriate height to allow vehicles to pass underneath without obstruction. Ensure there is sufficient clearance for all types of vehicles that will use the parking facility.
6. Installation:
– Install the parking chain according to the manufacturer’s instructions. Use appropriate tools and equipment to ensure a secure and stable installation.
7. Secure Attachment:
– Double-check that the chain is securely attached to the anchor points, and there is no excessive slack or sagging.
8. Signage:
– Install clear and visible signage to inform users about the presence of the parking chain and how to operate it.
9. Testing:
– Test the parking chain’s movement to ensure it raises and lowers smoothly without any obstructions or jams.
10. Maintenance:
– Develop a maintenance schedule and conduct regular inspections to ensure the parking chain remains in good working condition. Lubricate the chain and address any issues promptly.
By following these installation steps and providing regular maintenance, you can ensure the car parking chain functions correctly and securely, providing efficient access control and enhancing the overall safety and convenience of your parking facility.
How do I choose the right car parking chain for my parking facility based on traffic volume and vehicle types?
Choosing the right car parking chain for your parking facility involves considering the traffic volume and types of vehicles that will use the facility. Here are the key factors to consider:
1. Traffic Volume:
– For high-traffic areas with a significant number of vehicles entering and exiting frequently, consider a durable and heavy-duty parking chain made from materials like steel or stainless steel. These materials can withstand the wear and tear associated with frequent use.
– For low-traffic areas or temporary parking setups, lighter materials like plastic or PVC chains may be suitable as they are more cost-effective.
2. Vehicle Types:
– For standard passenger cars and small vehicles, most parking chains should be sufficient. However, consider the length of the chain to accommodate wider entry points.
– For larger vehicles, such as trucks or buses, ensure that the parking chain is robust enough to support their weight and size. Opt for heavy-duty chains with thicker links and higher load-bearing capacity.
3. Manual vs. Automatic:
– Manual parking chains operated by attendants may be suitable for smaller parking facilities with moderate traffic. They offer a cost-effective and simple access control solution.
– Automatic parking chains integrated with electronic access control systems are more suitable for larger parking facilities or those with high traffic volume. They provide faster and more efficient access control, minimizing waiting times.
4. Customization:
– Consider whether you require customized parking chains to fit specific dimensions or to align with the overall aesthetic of the parking facility.
5. Environmental Factors:
– For outdoor parking facilities exposed to harsh weather conditions, opt for materials that offer good corrosion resistance, such as stainless steel or aluminum.
6. Budget:
– Determine the budget available for the parking chains, considering both the initial investment and long-term maintenance costs.
7. Compliance:
– Ensure that the chosen parking chains comply with local regulations and accessibility requirements to provide a safe and accessible parking environment.
By carefully evaluating these factors, you can select the most appropriate car parking chain that aligns with your parking facility’s specific needs, ensuring efficient access control and a positive user experience for all vehicle types and traffic volumes.
What are the standard sizes and configurations available for car parking chains?
Car parking chains come in various sizes and configurations to accommodate different parking facility needs. The standard sizes and configurations include:
1. Length: Parking chains are available in different lengths to span across various entrance or exit widths. Common lengths range from 10 feet (3 meters) to 20 feet (6 meters) to cover typical driveway widths.
2. Link Diameter: The diameter of the individual chain links can vary, with common sizes being around 1/4 inch (6mm) to 3/8 inch (10mm). Thicker links provide additional strength and durability.
3. Material: Parking chains are usually made from sturdy metals like steel, which ensures they can withstand outdoor conditions and the weight of vehicles.
4. Color: While the most common color for parking chains is standard metal silver, some manufacturers offer chains with colored coatings for aesthetic purposes or enhanced visibility.
5. Configurations: There are two primary configurations of parking chains:
- Fixed: Fixed parking chains are permanently mounted on sturdy posts or walls on either side of the entrance or exit. They are not adjustable in length and remain in place at all times.
- Retractable: Retractable or removable parking chains can be raised or lowered as needed. They are connected to retractable posts or bollards, allowing attendants or automated systems to control access by raising or lowering the chain.
It’s essential to choose the appropriate size and configuration based on the specific requirements of the parking facility, the expected volume of traffic, and the level of security needed.
editor by CX 2023-08-21
China Hot selling Short-Pitch 16b Precision Industrial &Agriculture Transmission Sugar/Coal Machine/Car Parking Driving Conveyor Roller Chains with ASME/ANSI/DIN Standard near me shop
Solution Description
Simple Information
|
DIN/ISO NO: |
16B |
Pitch (mm): |
25.four hundred |
|
Roller Diameter(mm): |
fifteen.88 |
Pin Diameter(mm): |
eight.28 |
|
Regular Tensile Strength: |
72.8KN |
Internal Plate Width (mm): |
seventeen.02 |
|
Plate Thickness (mm): |
4.fifteen/3.one |
Bodyweight / Meter (kgs/m): |
2.seventy one |
|
Chain Dimension: |
5F, 10F, 5Meters |
HS Code: |
7315119000 |
|
Trademark: |
SMCC or OEM |
Certification: |
ISO90001, SGS |
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain generate most frequently used for transmission of mechanical electrical power on several kinds of domestic, industrial and agricultural machinery, which includes conveyors, wire- and tube-drawing machines, printing presses, automobiles, bikes, and bicycles. It consists of a series of brief cylindrical rollers held with each other by aspect backlinks. It is pushed by a toothed wheel called a sprocket. It is a simple, reliable, and productive signifies of energy transmission.
Development OF THE CHAIN
Two diverse measurements of roller chain, demonstrating development.
There are 2 types of backlinks alternating in the bush roller chain. The very first kind is inner hyperlinks, having 2 inner plates held collectively by 2 sleeves or bushings on which rotate 2 rollers. Inner hyperlinks alternate with the next kind, the outer back links, consisting of 2 outer plates held jointly by pins passing via the bushings of the inner back links. The “bushingless” roller chain is related in procedure even though not in building alternatively of separate bushings or sleeves holding the internal plates together, the plate has a tube stamped into it protruding from the gap which serves the identical goal. This has the gain of removing 1 action in assembly of the chain.
The roller chain style reduces friction compared to simpler styles, ensuing in greater performance and less put on. The authentic power transmission chain varieties lacked rollers and bushings, with the two the interior and outer plates held by pins which straight contacted the sprocket enamel however this configuration exhibited very quick dress in of the two the sprocket tooth, and the plates the place they pivoted on the pins. This problem was partially solved by the advancement of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This dispersed the dress in more than a greater region nonetheless the teeth of the sprockets nevertheless wore a lot more speedily than is desirable, from the sliding friction from the bushings. The addition of rollers bordering the bushing sleeves of the chain and supplied rolling contact with the teeth of the sprockets resulting in superb resistance to wear of the two sprockets and chain as properly. There is even quite minimal friction, as lengthy as the chain is sufficiently lubricated. Ongoing, cleanse, lubrication of roller chains is of major relevance for efficient procedure as properly as correct tensioning.
LUBRICATION
Several driving chains (for case in point, in manufacturing facility products, or driving a camshaft inside of an interior combustion engine) work in cleanse environments, and hence the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed setting this kind of as an oil bath. Some roller chains are developed to have o-rings created into the space amongst the outside the house website link plate and the inside of roller url plates. Chain manufacturers began to contain this function in 1971 soon after the application was invented by Joseph Montano whilst operating for Whitney Chain of Hartford, Connecticut. O-rings ended up integrated as a way to enhance lubrication to the hyperlinks of electricity transmission chains, a service that is vitally important to extending their working daily life. These rubber fixtures type a barrier that retains factory utilized lubricating grease inside the pin and bushing dress in areas. Even more, the rubber o-rings avoid filth and other contaminants from getting into inside of the chain linkages, where such particles would or else lead to significant dress in.[citation needed]
There are also several chains that have to operate in dirty situations, and for measurement or operational causes can’t be sealed. Examples include chains on farm products, bicycles, and chain saws. These chains will automatically have relatively substantial rates of use, specifically when the operators are well prepared to accept much more friction, much less performance, far more sounds and far more regular CZPT as they neglect lubrication and adjustment.
Several oil-primarily based lubricants appeal to filth and other particles, ultimately forming an CZPT paste that will compound use on chains. This difficulty can be circumvented by use of a “dry” PTFE spray, which types a solid movie following software and repels each particles and humidity.
VARIANTS Layout
Structure of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not becoming employed for a high put on software (for instance if it is just transmitting movement from a hand-operated lever to a control shaft on a machine, or a sliding doorway on an oven), then 1 of the less complicated varieties of chain may possibly nevertheless be employed. Conversely, where extra toughness but the easy push of a smaller pitch is necessary, the chain might be “siamesed” instead of just 2 rows of plates on the outer sides of the chain, there may possibly be 3 (“duplex”), 4 (“triplex”), or a lot more rows of plates working parallel, with bushings and rollers among every single adjacent pair, and the very same variety of rows of enamel operating in parallel on the sprockets to match. Timing chains on automotive engines, for instance, typically have multiple rows of plates named strands.
Roller chain is manufactured in several sizes, the most common American Countrywide Standards Institute (ANSI) expectations currently being 40, fifty, sixty, and 80. The very first digit(s) point out the pitch of the chain in eighths of an inch, with the very last digit currently being 0 for common chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Hence, a chain with 50 %-inch pitch would be a #forty even though a #a hundred and sixty sprocket would have teeth spaced 2 inches aside, and many others. Metric pitches are expressed in sixteenths of an inch as a result a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from simple carbon or alloy metal, but stainless steel is used in meals processing equipment or other spots where lubrication is a problem, and nylon or brass are sometimes seen for the very same purpose.
Roller chain is ordinarily hooked up employing a master website link (also recognized as a connecting link), which normally has 1 pin held by a horseshoe clip fairly than friction match, enabling it to be inserted or taken out with easy instruments. Chain with a removable link or pin is also acknowledged as cottered chain, which enables the duration of the chain to be adjusted. Fifty percent backlinks (also identified as offsets) are available and are employed to enhance the length of the chain by a single roller. Riveted roller chain has the learn link (also acknowledged as a connecting link) “riveted” or mashed on the ends. These pins are produced to be tough and are not removable.
USE
An case in point of 2 ‘ghost’ sprockets tensioning a triplex roller chain program
Roller chains are utilised in lower- to mid-velocity drives at around 600 to 800 feet per moment even so, at increased speeds, about 2,000 to 3,000 feet for each moment, V-belts are generally utilised thanks to put on and noise troubles.
A bicycle chain is a form of roller chain. Bicycle chains could have a master hyperlink, or may possibly require a chain instrument for removal and installation. A similar but larger and as a result more powerful chain is utilised on most motorcycles even though it is at times changed by either a toothed belt or a shaft generate, which supply decrease sounds level and fewer upkeep requirements.
The great vast majority of vehicle engines use roller chains to travel the camshaft(s). Very substantial functionality engines frequently use equipment push, and commencing in the early sixties toothed belts have been used by some producers.
Chains are also utilised in forklifts utilizing hydraulic rams as a pulley to CZPT and reduced the carriage however, these chains are not deemed roller chains, but are classified as carry or leaf chains.
Chainsaw reducing chains superficially resemble roller chains but are more closely relevant to leaf chains. They are pushed by projecting push hyperlinks which also serve to track down the chain on to the bar.
Sea Harrier FA.2 ZA195 entrance (chilly) vector thrust nozzle – the nozzle is rotated by a chain push from an air motor
A perhaps unusual use of a pair of bike chains is in the Harrier Leap Jet, where a chain drive from an air motor is utilized to rotate the movable motor nozzles, making it possible for them to be pointed downwards for hovering flight, or to the rear for normal ahead flight, a system identified as Thrust vectoring.
Wear
The impact of wear on a roller chain is to enhance the pitch (spacing of the links), leading to the chain to grow lengthier. Observe that this is due to dress in at the pivoting pins and bushes, not from real stretching of the steel (as does occur to some adaptable metal components these kinds of as the hand-brake cable of a motor motor vehicle).
With CZPT chains it is strange for a chain (other than that of a bicycle) to wear until finally it breaks, because a worn chain qualified prospects to the fast onset of put on on the teeth of the sprockets, with greatest failure currently being the loss of all the tooth on the sprocket. The sprockets (in specific the smaller of the two) endure a grinding motion that places a characteristic hook shape into the pushed confront of the enamel. (This influence is made even worse by a chain improperly tensioned, but is unavoidable no subject what care is taken). The worn tooth (and chain) no lengthier gives easy transmission of energy and this may turn into evident from the sounds, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing mild. The two sprockets and chain should be replaced in these circumstances, considering that a new chain on worn sprockets will not previous prolonged. However, in considerably less severe situations it may be attainable to save the bigger of the 2 sprockets, because it is usually the smaller 1 that suffers the most put on. Only in really mild-weight apps this kind of as a bicycle, or in severe instances of inappropriate rigidity, will the chain normally jump off the sprockets.
The lengthening due to put on of a chain is calculated by the subsequent formulation:
M = the size of a number of back links calculated
S = the amount of back links measured
P = Pitch
In market, it is normal to monitor the motion of the chain tensioner (whether handbook or computerized) or the precise size of a drive chain (a single rule of thumb is to exchange a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-middle generate). A simpler strategy, specifically suited for the cycle or motorcycle person, is to try to pull the chain absent from the greater of the 2 sprockets, even though making certain the chain is taut. Any considerable motion (e.g. creating it possible to see through a gap) probably indicates a chain worn up to and over and above the limit. Sprocket hurt will outcome if the issue is ignored. Sprocket wear cancels this impact, and might mask chain put on.
CHAIN Energy
The most widespread measure of roller chain’s power is tensile strength. Tensile energy represents how much load a chain can endure underneath a one-time load ahead of breaking. Just as crucial as tensile strength is a chain’s exhaustion power. The essential factors in a chain’s tiredness energy is the good quality of metal used to manufacture the chain, the heat therapy of the chain factors, the top quality of the pitch gap fabrication of the linkplates, and the type of shot additionally the intensity of shot peen protection on the linkplates. Other elements can incorporate the thickness of the linkplates and the style (contour) of the linkplates. The rule of thumb for roller chain running on a continuous push is for the chain load to not CZPT a mere 1/6 or 1/9 of the chain’s tensile strength, relying on the sort of master back links utilized (press-match vs. slip-match)[citation essential]. Roller chains working on a continuous generate over and above these thresholds can and usually do fail prematurely through linkplate fatigue failure.
The regular minimum final toughness of the ANSI 29.1 steel chain is twelve,five hundred x (pitch, in inches)two. X-ring and O-Ring chains drastically lessen dress in by implies of interior lubricants, growing chain existence. The inner lubrication is inserted by implies of a vacuum when riveting the chain jointly.
CHAIN STHangZhouRDS
Requirements businesses (this kind of as ANSI and ISO) preserve requirements for design and style, proportions, and interchangeability of transmission chains. For instance, the adhering to Table displays info from ANSI regular B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) designed by the American Culture of Mechanical Engineers (ASME). See the references[8][9][10] for further data.
ASME/ANSI B29.1-2011 Roller Chain Common SizesSizePitchMaximum Roller DiameterMinimum Supreme Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Regular Dimensions | ||||
| Dimension | Pitch | Optimum Roller Diameter | Least Supreme Tensile Toughness | Measuring Load |
|---|---|---|---|---|
| twenty five | .250 in (6.35 mm) | .a hundred thirty in (3.30 mm) | 780 lb (350 kg) | eighteen lb (8.2 kg) |
| 35 | .375 in (9.53 mm) | .two hundred in (5.08 mm) | one,760 lb (800 kg) | 18 lb (8.2 kg) |
| forty one | .500 in (twelve.70 mm) | .306 in (7.seventy seven mm) | one,500 lb (680 kg) | 18 lb (8.2 kg) |
| forty | .five hundred in (12.70 mm) | .312 in (7.92 mm) | three,a hundred twenty five lb (1,417 kg) | 31 lb (fourteen kg) |
| fifty | .625 in (15.88 mm) | .400 in (10.sixteen mm) | four,880 lb (2,210 kg) | 49 lb (22 kg) |
| 60 | .750 in (19.05 mm) | .469 in (11.ninety one mm) | seven,030 lb (3,one hundred ninety kg) | 70 lb (32 kg) |
| 80 | one.000 in (twenty five.forty mm) | .625 in (fifteen.88 mm) | 12,five hundred lb (5,seven-hundred kg) | 125 lb (fifty seven kg) |
| one hundred | one.250 in (31.seventy five mm) | .750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| a hundred and twenty | one.five hundred in (38.10 mm) | .875 in (22.23 mm) | 28,one hundred twenty five lb (12,757 kg) | 281 lb (127 kg) |
| 140 | 1.750 in (44.45 mm) | 1.000 in (twenty five.forty mm) | 38,280 lb (seventeen,360 kg) | 383 lb (174 kg) |
| 160 | 2.000 in (50.80 mm) | one.one hundred twenty five in (28.fifty eight mm) | 50,000 lb (23,000 kg) | 500 lb (230 kg) |
| a hundred and eighty | 2.250 in (fifty seven.15 mm) | 1.460 in (37.08 mm) | 63,280 lb (28,700 kg) | 633 lb (287 kg) |
| 200 | two.500 in (63.50 mm) | 1.562 in (39.67 mm) | 78,175 lb (35,460 kg) | 781 lb (354 kg) |
| 240 | three.000 in (seventy six.twenty mm) | one.875 in (47.sixty three mm) | 112,500 lb (fifty one,000 kg) | 1,000 lb (450 kg |
For mnemonic purposes, under is one more presentation of key dimensions from the identical normal, expressed in fractions of an inch (which was component of the thinking driving the decision of favored figures in the ANSI common):
| Pitch (inches) | Pitch expressed in eighths |
ANSI normal chain quantity |
Width (inches) |
|---|---|---|---|
| 1⁄4 | two⁄eight | 25 | 1⁄8 |
| 3⁄8 | three⁄eight | 3five | three⁄sixteen |
| 1⁄two | four⁄eight | 4one | one⁄4 |
| 1⁄two | 4⁄eight | 4 | 5⁄sixteen |
| five⁄8 | 5⁄eight | five | 3⁄8 |
| 3⁄4 | 6⁄8 | six | one⁄2 |
| 1 | 8⁄eight | eight | five⁄8 |
Notes:
one. The pitch is the length between roller centers. The width is the distance between the link plates (i.e. marginally much more than the roller width to allow for clearance).
two. The correct-hand digit of the standard denotes 0 = regular chain, 1 = light-weight chain, 5 = rollerless bushing chain.
three. The left-hand digit denotes the quantity of eighths of an inch that make up the pitch.
4. An “H” pursuing the normal quantity denotes heavyweight chain. A hyphenated quantity adhering to the standard variety denotes double-strand (2), triple-strand (3), and so on. Hence 60H-3 denotes number 60 heavyweight triple-strand chain.
A standard bicycle chain (for derailleur gears) uses slim 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capability. The a lot more sprockets at the rear wheel (traditionally 3-6, nowadays 7-twelve sprockets), the narrower the chain. Chains are marketed according to the amount of speeds they are developed to function with, for instance, “ten velocity chain”. Hub equipment or solitary speed bicycles use 1/2″ x 1/8″ chains, exactly where 1/8″ refers to the greatest thickness of a sprocket that can be employed with the chain.
Normally chains with parallel shaped backlinks have an even quantity of backlinks, with every single narrow link adopted by a broad 1.Chains developed up with a uniform kind of hyperlink, slender at 1 and broad at the other end, can be created with an odd quantity of links, which can be an edge to adapt to a special chainwheel-distance on the other side such a chain tends to be not so robust.
Roller chains produced making use of ISO common are occasionally named as isochains.
WHY Choose US
1. Reputable Top quality Assurance Method
2. Reducing-Edge Pc-Controlled CNC Machines
three. Bespoke Remedies from Extremely Seasoned Professionals
four. Customization and OEM Offered for Distinct Software
5. Extensive Stock of Spare Elements and Accessories
6. Properly-Produced Around the world Advertising and marketing Network
7. Efficient Right after-Sale Services Technique
The 219 sets of innovative computerized manufacturing equipment give assures for substantial product high quality. The 167 engineers and experts with senior specialist titles can style and develop products to fulfill the actual calls for of buyers, and OEM customizations are also obtainable with us. Our seem worldwide service network can offer consumers with timely following-sales specialized services.
We are not just a producer and supplier, but also an industry expert. We perform pro-actively with you to offer you skilled guidance and item suggestions in purchase to stop up with a most expense powerful merchandise accessible for your distinct software. The clientele we provide around the world range from end customers to distributors and OEMs. Our OEM replacements can be substituted where ever needed and ideal for equally repair and new assemblies.
Like all of our roller chains, our solitary-strand roller chains are warmth dipped to make sure one hundred% lubricated parts and warmth dealt with to improve use resistance. Our sizzling dip lubrication method guarantees that each and every single strand roller chain operates at optimum ability and dress in daily life for as lengthy as possible. EP Chain proudly delivers hugely resilient one chain roller chains for your convenience. Every single of our solitary-strand roller chains is preloaded for the duration of the manufacturing approach, efficiently lowering original elongation right after you acquire your product. You will discover our solitary-strand roller chains utilized in a assortment of apps, such as the foodstuff sector or conveyor belts. At EP Chain, we comprehend that downtime can imply misplaced company and income. Our one-strand roller chains are the lacking link your organization demands to preserve devices and day-to-day functions working efficiently.
Listed here are some advantages of chain drives over belt and gear drives: They can be utilised for prolonged and quick distances. A number of axles, are pushed by chains. They are compact and have a tiny general dimensions, so even in the event of a hearth, you will not likely knowledge any poor problems. Temperature and ambient conditions do not affect its operation. Chain drives do not need initial rigidity. They are quite effective (up to ninety six%) and have no slip and creep during transmission, making sure a perfect equipment ratio. Chain generate, effortless to set up. Chain drives are lower upkeep, stand up to abrasive circumstances and work in moist situations
China OEM New Arrival with Attachment ANSI Roller Driving Chains Conveyor Industrial Ab Series Alloy Link Chain with Free Design Custom
Product Description
Product Description
A ,B sequence of precision roller chain is widely used and agricultural equipment, forestry machinery, metallurgical equipment, mining equipment, engineering equipment, petroleum equipment, building resources machinery, mild accomplishment equipment, foodstuff machinery, office equipment, environmental safety equipment, mechanical parking equipment, and so on.The many sectors of the nationwide economic system.
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Roller Chain Profile |
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Regular: |
ANSI, DIN, ISO |
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Type: |
Simplex regular roller chain,Douplex standard roller chain,Triplex common roller chain,Roller chain with attachment,Hollow pin roller chain,Leaf chain and many others, |
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ANSI chain No.: |
forty,50,60,80,100,120,a hundred and forty,one hundred sixty,one hundred eighty,200,240 |
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DIN/ISO chain No.: |
08A,10A,12A,16A,20A,24A,28A,32A,36A,40A,48A |
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Sequence: |
A collection,B sequence |
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DIN/ISO Standard Roller Chain (A sequence) |
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Simplex roller chain: |
08A-1,10A-1,12A-1,16A-1,20A-1,24A-1,28A-1,32A-1,36A-1,40A-1,48A-one |
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Duplex roller chain: |
08A-2,10A-2,12A-2,16A-2,20A-2,24A-2,28A-2,32A-2,36A-2,40A-2,48A-2 |
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Triplex roller chain: |
08A-3,10A-3,12A-3,16A-3,20A-3,24A-3,28A-3,32A-3,36A-3,40A-3,48A-three |
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Quadra roller chain: |
08A-4,10A-4,12A-4,16A-4,20A-4,24A-4,28A-4,32A-4,36A-4,40A-4,48A-4 | ||
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Penta roller chain: |
08A-5,10A-5,12A-5,16A-5,20A-5,24A-5,28A-5,32A-5,36A-5,40A-5,48A-5 | ||
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DIN/ISO Standard Roller Chain (B collection) |
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Simplex roller chain: |
06B-1,08B-1,10B-1,12B-1,16B-1,20B-1,24B-1,28B-1,32B-1,40B-1,48B-1,56B-1,64B-1,72B-1 |
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Duplex roller chain: |
06B-2,08B-2,10B-2,12B-2,16B-2,20B-2,24B-2,28B-2,32B-2,40B-2,48B-2,56B-2,64B-2,72B-two |
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Triplex roller chain: |
06B-3,08B-3,10B-3,12B-3,16B-3,20B-3,24B-3,28B-3,32B-3, |
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Quadra roller chain: |
06B-4,08B-4,10B-4,12B-4,16B-4,20B-4,24B-4,28B-4,32B-4, |
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Penta roller chain: |
06B-5,08B-5,10B-5,12B-5,16B-5,20B-5,24B-5,28B-5,32B-5, |
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Higher top quality chain
Our saw chain will be created by multiplex processes such as metallo graphical test,pressure& tensioin test and so on.
Firm Profile
HangZhou CZPT Chain Producing Co., Ltd was founded in June, 2008. A lot more than ten years′ growth has made us 1 of the main chain producing enterprises and the essential export bases in China. Right now, we very own 1 creation bases with a whole region of 10 thousand sq. meters: HangZhou CZPT Chain Production Co., Ltd and 1 Export Office: HangZhou CZPT Import and Export Co., Ltd. Below the endeavors of far more than 200 properly skilled personnel and a lot more than fifty professional specialists, our yearly production worth has strike a hundred and twenty million Yuan (20 million USD) and the annual chain creation quantities to 7 million meters (21 million feet). Our “QR Brand name” and “TZM Model” chains adopt the sophisticated and innovative designing techniques this kind of as PROE, CAD, CAM, and so forth. And are developed with high quality good quality. Our group of producing amenities are ISO 9001 & 9002 licensed and we are very pleased to be a good quality winner.
Our significant merchandise are as follows: ANSI roller chains and British Standard roller chains, attachments chains, bushing chains, double pitch conveyor chains and driving chains, motorbike chains, motor system chains, silent chains, leaf chains, metal agricultural chains, stainless chain, hollow pin chains, sharp leading chains, double additionally chains, metal detachable url chains, nickle-plated chains, zinc-plated chains, dacromet chains and huge pitch driving chains. We are also geared up with the potential for customized chain manufacturing.
The developed merchandise include much more than 1 thousand products and about 10 thousand specifications. The goods conform to the normal of GB, ISO, ANSI, JIS, DIN and BS. Those chains satisfy the need of consumers from Europe, The us, Japan and other nations all around the world. With the basic principle of “Survival lying in quality and improvement relying on credit rating” and the innovative manufacturing manner-JIT(just in time), we can entirely satisfy every single client′s demand.
Packaging & Transport
FAQ
one.Is the sample available?
Sure. We can supply the sample and its testing studies. It will consider some time after dispatched parcel.
But you ought to spend the freight expense first.
two. Can I use my very own emblem and style on the products?
Of course. We give the service of changing your brand and firm title on bars and packing boxs, and the color is also up to you.
3. What’s your MOQ?
For sample, we are inclined to create it even 1 chain.
4. Can I check out the factory if possible?
Indeed. We are very welcome. Depart us a concept in progress, and we will decide you up inside HangZhou.
5. What’s your Shipping and delivery time?
The production time of information bar and noticed chain is diverse. Xihu (West Lake) Dis. bar is longer than observed chain. But if we have inventory, we wil arrange shipping inside of 7 times. Actual time Exact time must be according to the QTY. We will imform you the timetable and maintain in touch with you.
Here are some benefits of chain drives over belt and equipment drives: They can be utilised for lengthy and brief distances. Many axles, are driven by chains. They are compact and have a modest all round dimensions, so even in the celebration of a fireplace, you will not encounter any bad problems. Temperature and ambient problems do not have an effect on its operation. Chain drives do not require preliminary pressure. They are very productive (up to ninety six%) and have no slip and creep for the duration of transmission, guaranteeing a ideal gear ratio. Chain push, easy to install. Chain drives are low servicing, face up to abrasive problems and run in moist situations
The travel chain is employed to transmit mechanical energy when the axle length is quick. These chains have powerful lubrication. There are the adhering to a few varieties of electrical power transmission chains. Slider or Bushing Chain Bushing Roller Chain Quiet Chain
China Good quality Short-Pitch 03c Precision Industrial & Agricultural Conveyor Roller Chains for Sugar/Coal Machine/Car Parking/Excavator with America European Standard wholesaler
Merchandise Description
Standard Information
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ANSI NO: |
15 |
DIN/ISO NO: |
03C |
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Pitch (mm): |
four.7625 |
Roller Diameter(mm): |
two.forty eight |
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Interior Plate Width (mm): |
two.38 |
Common Tensile Toughness: |
two.0KN |
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Pin Diameter(mm): |
1.sixty two |
Plate Thickness (mm): |
.sixty |
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Excess weight / Meter (kgs/m): |
.08 |
Chain Size: |
5F, 10F, 5Meters |
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Origin: |
HangZhou China |
HS Code: |
7315119000 |
ROLLER CHAIN
Roller chain or bush roller chain is the type of chain drive most commonly utilized for transmission of mechanical energy on several varieties of domestic, industrial and agricultural machinery, like conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It is made up of a series of short cylindrical rollers held collectively by aspect back links. It is driven by a toothed wheel called a sprocket. It is a simple, trustworthy, and efficient implies of electrical power transmission.
Construction OF THE CHAIN
Two various sizes of roller chain, showing building.
There are 2 types of hyperlinks alternating in the bush roller chain. The 1st variety is internal back links, possessing 2 internal plates held together by 2 sleeves or bushings upon which rotate 2 rollers. Inner back links alternate with the 2nd variety, the outer backlinks, consisting of 2 outer plates held collectively by pins passing through the bushings of the interior links. The “bushingless” roller chain is similar in operation however not in building rather of separate bushings or sleeves holding the internal plates jointly, the plate has a tube stamped into it protruding from the hole which serves the same goal. This has the benefit of removing 1 phase in assembly of the chain.
The roller chain design minimizes friction when compared to less difficult patterns, resulting in increased efficiency and much less wear. The unique power transmission chain kinds lacked rollers and bushings, with both the internal and outer plates held by pins which right contacted the sprocket teeth however this configuration exhibited really quick put on of equally the sprocket tooth, and the plates the place they pivoted on the pins. This difficulty was partly solved by the advancement of bushed chains, with the pins holding the outer plates passing by way of bushings or sleeves connecting the inner plates. This distributed the wear above a greater spot nevertheless the enamel of the sprockets nevertheless wore far more rapidly than is appealing, from the sliding friction towards the bushings. The addition of rollers surrounding the bushing sleeves of the chain and supplied rolling make contact with with the tooth of the sprockets ensuing in outstanding resistance to put on of equally sprockets and chain as effectively. There is even quite minimal friction, as long as the chain is sufficiently lubricated. Continuous, cleanse, lubrication of roller chains is of main relevance for successful operation as nicely as proper tensioning.
LUBRICATION
Many driving chains (for case in point, in factory equipment, or driving a camshaft inside of an interior combustion motor) operate in clear environments, and as a result the sporting surfaces (that is, the pins and bushings) are risk-free from precipitation and airborne grit, many even in a sealed atmosphere these kinds of as an oil bath. Some roller chains are made to have o-rings created into the place between the outdoors link plate and the inside roller hyperlink plates. Chain producers commenced to include this characteristic in 1971 soon after the software was invented by Joseph Montano although working for Whitney Chain of Hartford, Connecticut. O-rings were provided as a way to enhance lubrication to the backlinks of energy transmission chains, a service that is vitally critical to extending their functioning lifestyle. These rubber fixtures sort a barrier that retains factory applied lubricating grease inside the pin and bushing dress in locations. Even more, the rubber o-rings prevent filth and other contaminants from getting into inside of the chain linkages, the place this sort of particles would normally trigger considerable wear.[quotation essential]
There are also many chains that have to function in soiled circumstances, and for dimension or operational reasons can not be sealed. Examples contain chains on farm gear, bicycles, and chain saws. These chains will always have comparatively substantial rates of wear, specifically when the operators are prepared to accept far more friction, considerably less efficiency, more sound and much more frequent CZPT as they neglect lubrication and adjustment.
Numerous oil-based mostly lubricants entice dust and other particles, at some point forming an CZPT paste that will compound put on on chains. This dilemma can be circumvented by use of a “dry” PTFE spray, which kinds a solid movie right after software and repels equally particles and dampness.
VARIANTS Style
Layout of a roller chain: 1. Outer plate, 2. Interior plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being utilised for a high dress in application (for occasion if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may possibly still be utilised. Conversely, exactly where further toughness but the clean travel of a smaller pitch is essential, the chain might be “siamesed” instead of just 2 rows of plates on the outer sides of the chain, there could be 3 (“duplex”), 4 (“triplex”), or much more rows of plates operating parallel, with bushings and rollers among every adjacent pair, and the very same amount of rows of tooth working in parallel on the sprockets to match. Timing chains on automotive engines, for case in point, generally have a number of rows of plates known as strands.
Roller chain is created in many dimensions, the most common American National Expectations Institute (ANSI) specifications getting 40, fifty, sixty, and eighty. The 1st digit(s) reveal the pitch of the chain in eighths of an inch, with the very last digit getting 0 for regular chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Hence, a chain with 50 percent-inch pitch would be a #forty whilst a #one hundred sixty sprocket would have tooth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch thus a metric #8 chain (08B-1) would be equal to an ANSI #40. Most roller chain is manufactured from simple carbon or alloy metal, but stainless metal is utilized in foodstuff processing machinery or other locations in which lubrication is a problem, and nylon or brass are at times seen for the same explanation.
Roller chain is ordinarily hooked up employing a master website link (also identified as a connecting website link), which generally has 1 pin held by a horseshoe clip fairly than friction suit, allowing it to be inserted or taken off with easy equipment. Chain with a removable website link or pin is also recognized as cottered chain, which enables the duration of the chain to be modified. 50 % back links (also identified as offsets) are offered and are utilized to enhance the length of the chain by a single roller. Riveted roller chain has the master link (also recognized as a connecting hyperlink) “riveted” or mashed on the finishes. These pins are created to be tough and are not detachable.
USE
An illustration of 2 ‘ghost’ sprockets tensioning a triplex roller chain technique
Roller chains are employed in lower- to mid-velocity drives at close to 600 to 800 ft per moment nonetheless, at higher speeds, close to 2,000 to 3,000 toes for each moment, V-belts are normally employed thanks to dress in and sound issues.
A bicycle chain is a form of roller chain. Bicycle chains might have a master hyperlink, or may need a chain device for elimination and installation. A similar but bigger and as a result more powerful chain is used on most bikes even though it is at times changed by both a toothed belt or a shaft push, which supply reduced sounds level and less servicing demands.
The fantastic bulk of auto engines use roller chains to push the camshaft(s). Extremely large performance engines frequently use equipment push, and commencing in the early 1960s toothed belts have been used by some companies.
Chains are also utilized in forklifts utilizing hydraulic rams as a pulley to CZPT and lower the carriage nevertheless, these chains are not regarded roller chains, but are labeled as carry or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more carefully connected to leaf chains. They are driven by projecting travel back links which also serve to find the chain onto the bar.
Sea Harrier FA.2 ZA195 front (chilly) vector thrust nozzle – the nozzle is rotated by a chain travel from an air motor
A perhaps unusual use of a pair of motorbike chains is in the Harrier Leap Jet, exactly where a chain generate from an air motor is utilised to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal ahead flight, a system recognized as Thrust vectoring.
Wear
The influence of wear on a roller chain is to increase the pitch (spacing of the backlinks), creating the chain to increase lengthier. Observe that this is owing to use at the pivoting pins and bushes, not from real stretching of the steel (as does come about to some adaptable metal components this kind of as the hand-brake cable of a motor vehicle).
With CZPT chains it is uncommon for a chain (other than that of a bicycle) to dress in until it breaks, because a worn chain qualified prospects to the speedy onset of dress in on the tooth of the sprockets, with ultimate failure getting the reduction of all the teeth on the sprocket. The sprockets (in specific the smaller sized of the two) suffer a grinding movement that places a characteristic hook form into the driven face of the enamel. (This influence is manufactured worse by a chain improperly tensioned, but is unavoidable no subject what care is taken). The worn tooth (and chain) no longer supplies smooth transmission of power and this may grow to be obvious from the noise, the vibration or (in auto engines employing a timing chain) the variation in ignition timing observed with a timing light-weight. The two sprockets and chain ought to be replaced in these situations, considering that a new chain on worn sprockets will not final lengthy. Even so, in significantly less serious situations it could be feasible to conserve the bigger of the 2 sprockets, because it is often the scaled-down 1 that suffers the most put on. Only in extremely light-weight-fat apps these kinds of as a bicycle, or in excessive situations of inappropriate stress, will the chain generally soar off the sprockets.
The lengthening owing to dress in of a chain is calculated by the subsequent system:
M = the duration of a number of hyperlinks measured
S = the number of hyperlinks measured
P = Pitch
In business, it is common to monitor the movement of the chain tensioner (no matter whether manual or computerized) or the exact length of a drive chain (1 rule of thumb is to change a roller chain which has elongated 3% on an adjustable generate or 1.5% on a fixed-center travel). A simpler technique, particularly appropriate for the cycle or motorcycle person, is to endeavor to pull the chain absent from the more substantial of the 2 sprockets, although making certain the chain is taut. Any important motion (e.g. creating it attainable to see via a gap) almost certainly suggests a chain worn up to and beyond the restrict. Sprocket hurt will end result if the issue is dismissed. Sprocket dress in cancels this influence, and could mask chain wear.
CHAIN Strength
The most typical evaluate of roller chain’s toughness is tensile power. Tensile power represents how significantly load a chain can stand up to below a one-time load prior to breaking. Just as crucial as tensile energy is a chain’s fatigue toughness. The critical factors in a chain’s tiredness energy is the good quality of steel employed to CZPT the chain, the warmth treatment of the chain factors, the top quality of the pitch hole fabrication of the linkplates, and the type of shot additionally the depth of shot peen coverage on the linkplates. Other factors can contain the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous generate is for the chain load to not CZPT a mere 1/6 or 1/9 of the chain’s tensile power, based on the sort of grasp back links used (press-fit vs. slip-in shape)[citation required]. Roller chains working on a continuous drive beyond these thresholds can and normally do are unsuccessful prematurely through linkplate exhaustion failure.
The normal minimum ultimate energy of the ANSI 29.1 metal chain is twelve,five hundred x (pitch, in inches)2. X-ring and O-Ring chains tremendously decrease dress in by implies of inner lubricants, escalating chain life. The inner lubrication is inserted by implies of a vacuum when riveting the chain collectively.
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Standards businesses (these kinds of as ANSI and ISO) sustain requirements for style, proportions, and interchangeability of transmission chains. For example, the pursuing Table displays data from ANSI common B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) designed by the American Society of Mechanical Engineers (ASME). See the references[8][9][ten] for further data.
ASME/ANSI B29.1-2011 Roller Chain Regular SizesSizePitchMaximum Roller DiameterMinimum Supreme Tensile StrengthMeasuring Load25
| ASME/ANSI B29.1-2011 Roller Chain Common Sizes | ||||
| Dimension | Pitch | Optimum Roller Diameter | Minimal Ultimate Tensile Toughness | Measuring Load |
|---|---|---|---|---|
| twenty five | .250 in (6.35 mm) | .a hundred thirty in (3.30 mm) | 780 lb (350 kg) | 18 lb (8.2 kg) |
| 35 | .375 in (9.53 mm) | .two hundred in (5.08 mm) | one,760 lb (800 kg) | 18 lb (8.2 kg) |
| forty one | .500 in (12.70 mm) | .306 in (7.77 mm) | 1,500 lb (680 kg) | eighteen lb (8.2 kg) |
| forty | .500 in (twelve.70 mm) | .312 in (7.ninety two mm) | three,a hundred twenty five lb (1,417 kg) | 31 lb (fourteen kg) |
| fifty | .625 in (15.88 mm) | .four hundred in (ten.sixteen mm) | 4,880 lb (2,210 kg) | 49 lb (22 kg) |
| sixty | .750 in (19.05 mm) | .469 in (eleven.91 mm) | 7,030 lb (3,a hundred ninety kg) | 70 lb (32 kg) |
| eighty | one.000 in (25.40 mm) | .625 in (fifteen.88 mm) | twelve,500 lb (5,seven-hundred kg) | one hundred twenty five lb (57 kg) |
| one hundred | one.250 in (31.seventy five mm) | .750 in (19.05 mm) | 19,531 lb (8,859 kg) | 195 lb (88 kg) |
| one hundred twenty | one.500 in (38.ten mm) | .875 in (22.23 mm) | 28,a hundred twenty five lb (twelve,757 kg) | 281 lb (127 kg) |
| one hundred forty | one.750 in (44.45 mm) | 1.000 in (twenty five.40 mm) | 38,280 lb (17,360 kg) | 383 lb (174 kg) |
| 160 | two.000 in (50.80 mm) | 1.a hundred twenty five in (28.58 mm) | fifty,000 lb (23,000 kg) | 500 lb (230 kg) |
| one hundred eighty | two.250 in (fifty seven.fifteen mm) | one.460 in (37.08 mm) | 63,280 lb (28,seven-hundred kg) | 633 lb (287 kg) |
| 200 | 2.five hundred in (63.50 mm) | 1.562 in (39.sixty seven mm) | 78,one hundred seventy five lb (35,460 kg) | 781 lb (354 kg) |
| 240 | three.000 in (seventy six.20 mm) | one.875 in (47.sixty three mm) | 112,500 lb (51,000 kg) | one,000 lb (450 kg |
For mnemonic functions, underneath is an additional presentation of important dimensions from the same common, expressed in fractions of an inch (which was component of the pondering behind the decision of chosen numbers in the ANSI common):
| Pitch (inches) | Pitch expressed in eighths |
ANSI regular chain amount |
Width (inches) |
|---|---|---|---|
| one⁄four | two⁄8 | twofive | 1⁄8 |
| 3⁄8 | three⁄8 | 3five | 3⁄sixteen |
| 1⁄two | four⁄8 | four1 | 1⁄four |
| 1⁄two | four⁄eight | 4 | five⁄16 |
| five⁄8 | five⁄eight | 5 | 3⁄eight |
| three⁄4 | 6⁄eight | 6 | 1⁄2 |
| one | eight⁄eight | 8 | 5⁄8 |
Notes:
1. The pitch is the length among roller centers. The width is the distance among the website link plates (i.e. slightly a lot more than the roller width to permit for clearance).
2. The right-hand digit of the standard denotes 0 = regular chain, 1 = light-weight chain, 5 = rollerless bushing chain.
3. The remaining-hand digit denotes the quantity of eighths of an inch that make up the pitch.
four. An “H” subsequent the normal quantity denotes heavyweight chain. A hyphenated number pursuing the regular amount denotes double-strand (2), triple-strand (3), and so on. As a result 60H-3 denotes quantity 60 heavyweight triple-strand chain.
A normal bicycle chain (for derailleur gears) employs slim 1⁄2-inch-pitch chain. The width of the chain is variable, and does not influence the load capacity. The a lot more sprockets at the rear wheel (traditionally 3-6, these days 7-12 sprockets), the narrower the chain. Chains are marketed according to the amount of speeds they are designed to function with, for instance, “ten velocity chain”. Hub equipment or solitary speed bicycles use 1/2″ x 1/8″ chains, exactly where 1/8″ refers to the greatest thickness of a sprocket that can be utilized with the chain.
Typically chains with parallel shaped links have an even number of back links, with every single narrow link followed by a broad 1.Chains developed up with a uniform variety of website link, slim at 1 and wide at the other conclude, can be created with an odd number of back links, which can be an gain to adapt to a special chainwheel-length on the other side this sort of a chain tends to be not so sturdy.
Roller chains manufactured making use of ISO normal are at times referred to as as isochains.
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The drive chain is utilized to transmit mechanical electricity when the axle distance is limited. These chains have successful lubrication. There are the adhering to a few varieties of electrical power transmission chains. Slider or Bushing Chain Bushing Roller Chain Peaceful Chain
Chain pitch: refers to the distance among the hinge centre of a single chain link and the hinge center corresponding to the adjacent chain link. Sprocket Pitch Circle Diameter: The diameter of the circle the place the middle of the hinge is when the chain is wrapped all around the ball. The hinge facilities of the chain and the circles drawn by way of these centers are known as pitch circles, and their diameters are referred to as pitch circle diameters.These chains are utilised to constantly elevate and convey materials at a pace of 2 m/s. There are two kinds of conveyor chains: Removable or hooked chains: This kind of conveyor chain is used for electricity transmission among conveyors of shorter lengths. Closed chain: composed of the cylinder block and connecting rod, cast and fashioned, with high energy after warmth treatment.