40BS28 Sprocket With 3/4" Finished Bore 08B-4 Metric Roller Chain HCFJT212-38 bearing is a 2-3/8"

HCFJT212-38 bearing is a 2-3/8" bore two-bolt normal-duty flange bearing that utilizes an eccentric locking collar device to secure to a 2-3/8" shaft

Maximum Bore Size: 3-3/4"

Dimension (F): 3-1/4"

UEFT206-20 bearing is a 1-1/4" bore two-bolt normal-duty flange bearing that utilizes a Tru-Loc device to secure to a 1-1/4" shaft

100C54 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

40BS28 Sprocket With 3/4" Finished Bore 08B-4 Metric Roller Chain HCFJT212-38 bearing is a 2-3/8"This 40BS28 sprocket featured a 3 4" finished bore with a key way and two set screws. It is a durable, high quality, and precision sprocket with 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 #40 roller chain and sprocket thus preventing premature wear or