80BS31 Sprocket With 2-15/16" Finished Bore 2BK27 Pulley What sets this 6212-2RS bearing

What sets this 6212-2RS bearing apart from others is the ABEC 3 precision standard that this bearing is made to

Pitch Diameter: 79

50BS51 1 1/2" Finished Bore Sprocket Dimensions

Bearing Part #: SSUCTPTB207-20

80BS31 Sprocket With 2-15/16" Finished Bore 2BK27 Pulley What sets this 6212-2RS bearingThis 80BS31 sprocket features a 2 15 16" finished bore including a key way and two setscrews. It is a durable, high quality, and precision 31 tooth sprocket that fully meets all ANSI Standards which, insures proper contact between the #80 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