Allen-Bradley 25B22-1/2 is a single-strand steel roller chain sprocket (ANSI #25) designed for continuous-duty power transmission in industrial chain drives. It features 22 teeth, a 1/2 in. finished bore (unkeyed) with a Type B single-hub configuration to fit compatible 25 chain systems. The sprocket uses a 1/4 in. (6.35 mm) chain pitch and has an outside diameter of approximately 1.89 in. Common applications include conveyors, packaging equipment, agricultural and food processing lines, and other material-handling or automation setups that require precise chain engagement and reliable torque transfer.
