40BS47 Sprocket With 7/8" Finished Bore 08B B-Hub Sprockets This 6317 ball bearing is

This 6317 ball bearing is a high-precision premium quality deep groove 85x180x41 ball bearing made to ABEC 3 precision standards from AXIS

6213-ZZ Ball Bearing Dimensions

Our superior HCFS209-28 bearing with a 1-3/4" bore is equipped with a premium C3 precision insert bearing housed within a high-strength solid-base cast-iron housing

40A15 Sprocket Dimensions:

This 25V1030SK Sheave uses an SK bushing

40BS47 Sprocket With 7/8" Finished Bore 08B B-Hub Sprockets This 6317 ball bearing isThis 40BS47 sprocket features a 7 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 #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,