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100A40 sprockets with a stock bore comes with a 1-1/4" inside diameter plain hole and can be easily machine bored to custom sizes
Inner Link Width (b1): 9
120A12 Sprocket Dimensions
This 50BS40 sprocket features a 1-15/16" finished bore including a key-way and two setscrews
50BS47 Sprocket With 1-1/8" Finished Bore filter_50B56-SB 100A40 sprockets with a stockThis 50BS47 sprocket features a 1 1 8" finished bore including a key way and two setscrews. It is a durable, high quality, and precision sprocket that fully meets all ANSI Standards which insures proper contact between the #50 roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. We also offer stock bore
