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This 40BS38 sprocket features a 1-3/16" finished bore including a key-way and two setscrews
Sheave Size: 35V630SK
Common Interchanges: 50BS31H
and is supplied as a plain stock bore A-Plate style sprocket
50BS17 Sprocket With 1-5/8" Finished Bore filter_35B30-SB This 40BS38 sprocket features aThis 50BS17 sprocket featured a 1 5 8" 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 #50 roller chain and sprocket thus preventing premature wear
