Our 50BS40H sprockets are manufactured to conform to the ANSI standards for chain & sprockets. This sprocket is a 40 tooth sprocket that is compatible with ANSI #50 roller chain. The 50BS40 1" sprocket is a finished bore style that has a standard keyway & 2 setscrews. Our sprocket teeth are hardened to help prevent tooth wear. A black oxide finish is applied to the sprocket for corrosion resistance.
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