50BS38 Sprocket With 1-1/8" Finished Bore #50 ANSI Standard Roller Chain What sets this R4A-ZZ bearing

What sets this R4A-ZZ bearing apart from others is the ABEC 3 precision standard that this bearing is made to

Variable Pitch 2VP50 Pulley 7/8" is designed and engineered in a way that allows for precise adjustments in diameter

100BS12 1 15/16" Finished Bore Sprocket Dimensions

This 40BTB21 sprocket is a durable

50BS38 Sprocket With 1-1/8" Finished Bore #50 ANSI Standard Roller Chain What sets this R4A-ZZ bearingThis 50BS38 sprocket features a 1 1 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