40BS35 Sprocket With 7/8" Finished Bore filter_H35BS25 This 6306-ZZ ball bearing is

This 6306-ZZ ball bearing is a high-precision premium quality deep groove shielded 30x72x19 ball bearing made to ABEC 3 precision standards from AXIS

UCFB206-20 Bearing Dimensions

Something else that is notable about this 120B9 sprocket is that it fully meets all ANSI Standards

R14-ZZ Ball Bearing Dimensions

40BS35 Sprocket With 7/8" Finished Bore filter_H35BS25 This 6306-ZZ ball bearing isThis 40BS35 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,