#100H-1R Heavy OCM Japanese Roller Chain for Long Life

OCM's repunching process removes the taper

of hole. Both sides of the hole are parallel, better

bearing between pins and holes. 

This process increases fatigue strength

Rollers and link plates are shot peened to increase fatigue strength

Cylindrical Roundness - Solid Bushings

The advantage of solid bush, cylindrical roundness, makes for a large bearing area and oil port as an oil reservoir, improves the chain wear resistance and minimize chain elongation.

OCM roller chain is preloaded automatically after 

assembly to minimize initial elongation