100R31 Sprocket (Taper Bushed) #100 BTB Type Sprockets This 100BS11 sprocket features a

This 100BS11 sprocket features a 1" finished bore with a key-way and two set screws

Bore: 9/16"

100R21 sprockets are bored to accept a R1 type taper bushing

Maximum Bore: 9mm

100B19 Sprocket Dimensions

100R31 Sprocket (Taper Bushed) #100 BTB Type Sprockets This 100BS11 sprocket features aThis 100R31 sprocket is a durable, high quality, and precision 31 tooth sprocket that is manufactured to accept a R1 bushing. Something that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #100 roller chain and sprocket, thus preventing premature wear or breakage and this means that it will directly interchange with most other manufactures sprockets. This sprocket is also black oxide