50BS31 Sprocket With 7/8" Finished Bore 2AK32 Pulley This 4012 coupling chain is

This 4012 coupling chain is manufactured using high-quality precision heat-treated components to give it the maximum strength

Sheave Size: 1B5V50

): 3-13/16"

Sprocket Size: 120B36

This 5209 Bearing is a high-precision premium double-row angular contact ball bearing made to ABEC 3 precision standards from AXIS

50BS31 Sprocket With 7/8" Finished Bore 2AK32 Pulley This 4012 coupling chain isThis 50BS31 sprocket features a 7 8" finished bore including a key way and two setscrews. It is a durable, high quality, and precision sprocket that fully meets all ANSI Standards which insures proper contact between the #50 roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. We also offer stock bore sprockets,