The double-row roller chain adopts the chain specified in GB/T 1243.1-83 "Short Torque Precision Roller Chain for Transmission".
The form and size of shaft hole keyway conform to GB/T 3852—1997.
The structure and size of the cover are selected according to needs.
The mark conforms to GB/T 3852-1997.
The structure is simple and the assembly and disassembly are convenient. There is an empty stroke when reversing, so it is not suitable for reverse transmission with large impact load.