120E17 Sprocket (QD Type) 5V-Section Sheaves 100B42 sprockets with a stock

100B42 sprockets with a stock bore come with the standard 1-1/4" inside diameter hole with no keyway or setscrews and can be easily machine bored to custom sizes

120BTB30 sprockets are manufactured to accept a 3020 size taper bushing which we also stock with a wide range of bore sizes

Dimension (C): 6-5/8"

the 10B SA2 attachment has a straight tab on one side with two holes for mounting

120E17 Sprocket (QD Type) 5V-Section Sheaves 100B42 sprockets with a stockThis 120E17 sprocket is a durable, high quality, and precision sprocket with 17 hardened teeth that is manufactured to accept a E bushing. Sprockets that have hardened teeth last longer, perform better, 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 #120 roller chain and sprocket. Meeting strict ANSI Standards