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This 45V750SF Sheave uses an SF bushing
This 4C200E Sheave uses a E QD bushing
80A28 sprockets with a stock bore comes with a 1-3/16" inside diameter plain hole and can be easily machine bored to custom sizes
This 6318-2RS ball bearing is a high-precision premium quality sealed deep groove 90x190x43 ball bearing made to ABEC 3 precision standards from AXIS
Shaft Diameter (d): 1-9/16
80BS20 Sprocket With 1-15/16" Finished Bore filter_50B14-SB This 45V750SF Sheave uses anThis 80BS20 sprocket features a 1 15 16" finished bore with a key way and two set screws. It is a durable, high quality, and precision sprocket with 20 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #80 roller chain and sprocket thus preventing premature
