40A39 Sprocket 4545 the 6305-ZZ bearing features raceways

the 6305-ZZ bearing features raceways that are precision honed to a superb finish

For more information on a two groove 25V1130SK sheave

40B50 sprockets with a stock bore comes with the standard 3/4" inside diameter hole with no keyway or setscrews and can be easily machine bored to custom sizes

This 35B48 sprocket is a durable

This 35BS72 sprocket features a 1-1/4" finished bore including a key-way and two setscrews

40A39 Sprocket 4545 the 6305-ZZ bearing features racewaysThis 40A39 sprocket is a durable, high quality, and precision A Plate sprocket that is manufactured out of high quality steel. Something else that is notable about this sprocket is that it 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 evenly coated with black oxide, which adds resistance to to the environment and will prevent