40BS21 High-Performance Sprocket 1-1/2" 7" Stock Bore the 6309-2RS bearing features raceways

the 6309-2RS bearing features raceways that are precision honed to a superb finish

40A15 sprockets with a stock bore comes with a 5/8" inside diameter plain hole and can be easily machine bored to custom sizes

Our UCFT205-15 bearing is dimensionally made to industry standards

Sprocket Size: 10B9

2BK28 Pulley 1-1/8" Dimensions

40BS21 High-Performance Sprocket 1-1/2" 7" Stock Bore the 6309-2RS bearing features racewaysThis 40BS21 sprocket featured a 1 1 2" finished bore with a key way and two set screws. It is a durable, high quality, and precision sprocket with hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. 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