40BTB15 Sprocket (Taper Bushed) 51-Tooth Sprocket UCWFT201-8 bearing is a 1/2"

UCWFT201-8 bearing is a 1/2" bore two-bolt normal-duty flange bearing that utilizes set screws to secure to a 1/2" shaft

Sprocket Weight: 282

UC209-27 bearing is a normal-duty ball bearing insert made to C3 precision standards and utilizes set screws for securing a 1-11/16" shaft

08B21H sprockets with a stock bore comes with the standard 12 millimeter inside diameter hole with no key-way or set screws and can be easily machine bored to custom sizes

This 35H72 sprocket is a durable

40BTB15 Sprocket (Taper Bushed) 51-Tooth Sprocket UCWFT201-8 bearing is a 1/2"This 40BTB15 sprocket is a durable, high quality, and precision sprocket with hardened teeth that is manufactured to accept a 1008 bushing. 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 which prevents premature wear or breakage. This