40BS39 High-Performance Sprocket 1-1/8" 2AK154 Pulley Sprocket Weight: 72

Sprocket Weight: 72

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Dimension (E): 7/32"

100B45 sprockets with a stock bore come with the standard 1-1/2" inside diameter hole with no keyway or setscrews and can be easily machine bored to custom sizes

40BS39 High-Performance Sprocket 1-1/8" 2AK154 Pulley Sprocket Weight: 72This 40BS39 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 #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