40BS22 Sprocket With 1-7/16" Finished Bore 30-Tooth Sprocket What sets this 5303-2RS bearing

What sets this 5303-2RS bearing apart from others is the ABEC 3 precision standard that this bearing is made to

UCFT204-12 bearing is a 3/4" bore two-bolt normal-duty flange bearing that utilizes set screws to secure to a 3/4" shaft

UCFCS212-38 Bearing Dimensions

This 6219-2RS ball bearing is a high-precision premium quality sealed deep groove 95x170x32 ball bearing made to ABEC 3 precision standards from AXIS

40BS22 Sprocket With 1-7/16" Finished Bore 30-Tooth Sprocket What sets this 5303-2RS bearingThis 40BS22 sprocket featured a 1 7 16" 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 #40 roller chain and sprocket thus preventing premature wear