D140B20 Sprocket With Stock Bore 60B80 Sprockets This 6806-2RS ball bearing is

This 6806-2RS ball bearing is a high-precision premium quality sealed deep groove 30x42x7 ball bearing made to ABEC 3 precision standards from AXIS

This 50BS47 sprocket features a 1-1/2" finished bore including a key-way and two setscrews

UCFT205 Bearing Dimensions

Part #: HCTB 204-12

D140B20 Sprocket With Stock Bore 60B80 Sprockets This 6806-2RS ball bearing isThis D140B20 sprocket is a durable, high quality, and precision double 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 #140 2 double roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide