40BS39 High-Performance Sprocket 1-1/4" Iwis Roller Chain Dimension (B): 9mm

Dimension (B): 9mm

100A31 sprockets with a stock bore comes with a 1-1/4" inside diameter plain hole and can be easily machine bored to custom sizes

our HCFS210-32 bearing has added features that improve the overall life and performance of the unit

and precision 40 tooth sprocket that is manufactured to accept a F bushing

40BS39 High-Performance Sprocket 1-1/4" Iwis Roller Chain Dimension (B): 9mmThis 40BS39 sprocket features a 1 1 4" 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