40BS50 Sprocket With 3/4" Finished Bore 08B-4 Metric Roller Chain This 23V690SDS Sheave uses an

This 23V690SDS Sheave uses an SDS bushing

40BS33 1-1/2" Finished Bore Sprocket Dimensions:

This 35BS70 sprocket features a 3/4" finished bore including a key-way and two setscrews

Roller Diameter (D1): 12

40BS50 Sprocket With 3/4" Finished Bore 08B-4 Metric Roller Chain This 23V690SDS Sheave uses anThis 40BS50 sprocket features a 3 4" 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 #40 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 sprockets,