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What sets this 6303-ZZ bearing apart from others is the ABEC 3 precision standard that this bearing is made to
This 40BS47 sprocket features a 1" finished bore including a key-way and two setscrews
Limiting Speed (Grease): 7100 RPM
This 40B56 sprocket is a durable
Housing Number: RFB 207
50BS9 Sprocket With 5/8" Finished Bore #41 SH Type Sprockets What sets this 6303-ZZ bearingThis 50BS9 sprocket featured a 5 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 or
