40BS21 High-Performance Sprocket 1-7/16" filter_35B21-SB Our UCTB210-32 bearings are manufactured

Our UCTB210-32 bearings are manufactured to industry standard dimensions

80" in diameter

Length Through Bore: 8-1/2"

35BB20H idler sprocket is categorized as a ball bearing idler sprocket due to the ball bearing inserted

40BS21 High-Performance Sprocket 1-7/16" filter_35B21-SB Our UCTB210-32 bearings are manufacturedThis 40BS21 sprocket featured a 1 7 16" 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