41BS15 Sprocket With 1/2" Finished Bore UCF200 Four Bolt Set-Screw Flange Bearings This 40BS16 sprocket featured a

This 40BS16 sprocket featured a 5/8" finished bore with a key-way and two set screws

41BS18 3/4" Finished Bore Sprocket Dimensions

Limiting Speed (Open): 6300 RPM

Something that sets this 2040B18 sprocket apart from others is that it is Black Oxide Finished

Sprocket Size: 100BTB21

41BS15 Sprocket With 1/2" Finished Bore UCF200 Four Bolt Set-Screw Flange Bearings This 40BS16 sprocket featured aThis 41BS15 sprocket featured a 1 2" 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 #41 roller chain and sprocket thus preventing premature wear or