80BS57 Sprocket With 1-7/16" Finished Bore Variable Pitch Pulleys This 80BS51 sprocket features a

This 80BS51 sprocket features a 2-15/16" finished bore including a key-way and two setscrews

This 40BS72 sprocket features a 1-1/2" finished bore including a key-way and two setscrews

128V1800M Sheave Dimensions

50BS28 3/4" Finished Bore Sprocket Dimensions

For more information on a three groove 35V900SF sheave

80BS57 Sprocket With 1-7/16" Finished Bore Variable Pitch Pulleys This 80BS51 sprocket features aThis 80BS57 sprocket features a 1 7 16" finished bore including a key way and two setscrews. It is a durable, high quality, and precision 57 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