50BS54 Sprocket With 1-3/8" Finished Bore UCF200 Four Bolt Set-Screw Flange Bearings the 5309 bearing features raceways

the 5309 bearing features raceways that are precision honed to a superb finish

Additionally this bushing features a 11 millimeter bore with a standard keyway

Something else that is notable about this 06B18 sprocket is that it fully meets all ISO Standards

This 20A roller chain is manufactured dimensionally to ANSI B29

UCST214-44 take-up bearings are designed for take-up frames

50BS54 Sprocket With 1-3/8" Finished Bore UCF200 Four Bolt Set-Screw Flange Bearings the 5309 bearing features racewaysThis 50BS54 sprocket features a 1 3 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