D40BTB19H Sprocket (Taper Bushed) #240 Roller Chain Sprockets UCFC209-28 flange cartridge bearings are

UCFC209-28 flange cartridge bearings are designed for circumstances where the bearing is mounted to a surface that is perpendicular to the shaft axis

and precision 45 tooth sprocket that is manufactured to accept a 3020 bushing

AK22 Pulley 3/4" Dimensions

Dimension (K): PF 3/4

2TB94 Pulley Dimensions

D40BTB19H Sprocket (Taper Bushed) #240 Roller Chain Sprockets UCFC209-28 flange cartridge bearings areThis D40BTB19H sprocket is a durable, high quality, and precision double sprocket with hardened teeth that is manufactured to accept a 1210 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 2 double roller chain and sprocket thus preventing premature wear or