80BS9 Sprocket With 1-1/8" Finished Bore 2VP65 Pulley This 5C240F Sheave uses a

This 5C240F Sheave uses a F QD bushing

Hub Diameter: 3-3/32"

This 6915 ball bearing is a high-precision premium quality deep groove 75x105x16 ball bearing made to ABEC 3 precision standards from AXIS

This 40BS26 sprocket featured a 1-3/16" finished bore with a key-way and two set screws

Our superior UCWF202 bearing with a 15mm bore is equipped with a premium C3 precision insert bearing housed within a high-strength solid-base cast-iron housing

80BS9 Sprocket With 1-1/8" Finished Bore 2VP65 Pulley This 5C240F Sheave uses aThis 80BS9 sprocket features a 1 1 8" finished bore with a key way and two set screws. It is a durable, high quality, and precision sprocket with 9 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 #80 roller chain and sprocket thus preventing premature wear