40BS51 Sprocket With 1" Finished Bore 120B13 Sprockets While the phosphate coated and

While the phosphate coated and then painted finish adds corrosion resistance to the 2BK70H pulley

This 40BS57 sprocket features a 3/4" finished bore including a key-way and two setscrews

2TB54 Pulley Dimensions

2BK57 Pulley 1" Dimensions

40BS51 Sprocket With 1" Finished Bore 120B13 Sprockets While the phosphate coated andThis 40BS51 sprocket features a 1" 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 #40 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 sprockets,