Szp Group Chain

Szp Group provides a full range of drive sprockets for British standard chains with a maximum pitch of 114 inches to ensure the longest working life and productivity for your application.Other sizes of sprockets can be provided upon request, including those that meet US standard sizes.Special sprockets can also be manufactured in special materials or formats upon request, usually to meet specific applications in harsh or difficult driving situations, for example; welding of sprocket with shaft or installation of detachable hub with shear pin device. Necklace sprocket consists of chain plate It is composed of a separate tooth part and is used to rotate a large drum or workbench.Combination sprockets (two or more sprockets are combined together, with different pitch sizes and numbers of teeth).Sprockets with two or more segments, namely split sprocket or segment sprocket.Sprocket and chain compatibility Most drives have an even number of pitches in the chain, and by using drive sprockets with odd numbers of teeth, uniform wear distribution on the chain and sprocket teeth is ensured.The number of teeth of the driving sprocket and the driven sprocket can be even, but the wear distribution on the sprocket teeth and the chain is very poor.The maximum number of teeth of any driven sprocket should not exceed 2.This limitation is because for a given chain that stretches due to wear and tear, the working pitch diameter of the chain on the sprocket is relative to the nominal pitch circle diameter, that is, the position of the chain on the sprocket teeth is higher.The allowable safety chain wear is considered to be of the order of 200% elongation over the nominal length.The simple formula to determine how much chain elongation a sprocket can hold is 50/N, expressed as a percentage, where N is the number of teeth on the largest sprocket in the drive system.If the driving sprocket and the driven sprocket are operated by the same chain, for example, the transmission ratio is 1:1, it is a good practice that the total number of teeth is not less than 25.The two sprockets should each have 30 teeth.Center distance In order to obtain the best wear life, the center distance between the two sprockets should usually be in the range of 50 to 30 times the chain pitch.For drive recommendations with a center distance of less than 2 pitches or greater than three meters, we recommend discussing the drive details with our technicians.The minimum center distance sometimes depends on the amount of chain overlap on the drive sprocket. In this case, we usually recommend that the number of teeth meshing with the chain is not less than six.The center distance is also governed by the desirability of using chains with odd pitches to avoid the use of crank links, unless this practice is not recommended under special circumstances.For driving in a horizontal plane, the shortest center distance should be used as much as possible and consistent with the recommended chain overlap (up to six teeth) on the drive sprocket.

• Sprocket	smooth Run	Moderate shock	weight SHOCKS
  Up to 29T	EN8 or EN9	EN8 or EN9 hardened and tempered or surface hardened Low-carbon steel	EN8 or EN9 Hardened and tempered or case hardened mild steel
  30 tons and above	cast iron	Mild steel or Meehanite	EN8 or EN9 Hardened and tempered or case hardened mild steel

  
  
  
  
  
  
  
  

Szp Group DL series double-lead worm gear consists of two leads.One tooth surface of the worm thread and the mating side of its gear teeth are manufactured with one lead, while the lead of the other tooth side and its mating gear teeth is slightly different.As far as the worm is concerned, this has the effect of creating a worm thread with an increased thickness from one end to the other end of the worm.Therefore, if the worm moves in the axial direction when meshing with the worm gear, the backlash between the pair can be adjusted to a desired amount.In practice, gears are manufactured to achieve initial backlash at a certain distance from the reference plane on the worm.The worm can then be adjusted from this point as needed during the life of the gear. The DL series double-lead worm gear provides many advantages for the split worm gear design.It provides a kinematically correct gear, which can run in any direction of rotation, and its backlash can be steplessly adjusted from the acceptable maximum to zero.Precision double-lead worm gears with adjustable backlash are widely used in turntables, tool drives and machine tool positioning mechanisms.

Szp Group uses the "Holroyd" tooth profile conforming to British Standard 721 to manufacture worm gears.The off-side contact mode provides good oil entry, which brings the following benefits: Increased lubrication, improved efficiency, smoother operation, Szp Group worm gears are widely respected for their performance, from large steel mills to high-precision double-lead machine tools and rotary positioning systems The reliability and reliability of various driving devices.Unparalleled accuracy Although the worm gear produced by Szp Group complies with BS 721, in order to better control manufacturing tolerances, we use DIN 3962 and DIN 3974 to specify the quality level.The manufacturing quality is supported by the latest inspection technology. For high-precision gear sets, we can provide the results of the pitch, contour and transmission changes of the worm gear set within a 360-degree range in the form of graphs.Certification Szp Group Gears has passed BS EN ISO 9001:2008 certification.All products are designed and manufactured within this quality assurance system.Applications mining, coal cutting machines, shaft drives, civil engineering, cranes, trucks, dump trucks, steel plants, compactors, wire drawing and pipes, automobiles, oil pumps, fuel injection, electricity, pulverized coal machines, steam turbines, machine tools, indexing Head turntable

Szp Group Gears uses cutting-edge gear technology to manufacture high-quality, high-spec loose helical gears and spur gears.Our dedicated gear manufacturing machine shop provides the facilities needed to manufacture batches or individual components for precision and commercial fields.Our experienced engineering department can advise on all areas of gear design-gear blank materials, heat treatment, surface treatment and complete gear tooth geometry.Using Kisoft gear design software, our engineering team is able to maximize gear performance to provide unique gear design and development services.High-precision hobbing or grinding of gear teeth, helical gears/spur gears, batch or small batch production of customized tools, contour gear grinding diameters up to 350 mm, tooth surface width up to 160 mm, prototype gears and standard gears. Kissoft gear design software optimizes gear performance

30 years of experience in producing excellent chain technology has helped us identify common challenges faced by our customers.To help meet these challenges, we have developed a series of new high-performance sprockets that can be shipped on the same day*.The three main problem areas identified are: "The new chain is installed on the old sprocket" Problem: The service life of the newly installed chain is significantly reduced. Solution: If the existing sprocket shows any signs of wear, please replace it. Benefits: Increase the chain and The service life of the sprocket "low or inconsistent tooth hardness" problem: significantly increase the wear of the chain and the sprocket. Solution: Szp Group sprocket teeth are induction hardened to comply with strictly controlled specifications. Advantages: high resistance to impact load and higher operating speed Fast "poor or inconsistent tooth surface profile" problem: prevent the chain from running smoothly on the sprocket and accelerate wear. Solution: Szp Group sprocket ensures a consistent and smooth tooth profile. Advantages: reduced wear and quieter operation, pitch sizes from 06B to 16B simplex, guide hole configuration with new products is constantly added. Szp Group high-performance sprockets comply with the ISO 606 standard, made of C45 grade carbon steel, the teeth are induction hardened, and the tolerance range is 40-50HRC. The product has an additional surface treatment to prevent corrosion and improve lubricity. More information about our full range Click here to download the sprocket series product data sheet. Additional services provide customization, reboring, keyway and fixing screw modification services.Please contact your local sales office.