50BS25 Sprocket With 1-1/8" Finished Bore filter_H50B57 This 40BS49 sprocket features a

This 40BS49 sprocket features a 5/8" finished bore including a key-way and two setscrews

For more information on a four groove 45V975E sheave

This 6304-ZZ ball bearing is a high-precision premium quality deep groove shielded 20x52x15 ball bearing made to ABEC 3 precision standards from AXIS

Our HCFJT205-14 bearing is dimensionally made to industry standards

50BS25 Sprocket With 1-1/8" Finished Bore filter_H50B57 This 40BS49 sprocket features aThis 50BS25 sprocket featured a 1 1 8" finished bore with a key way and two set screws. It is a durable, high quality, and precision sprocket with hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #50 roller chain and sprocket thus preventing premature wear