Morse Mechanical Clutches offer the most complete and versatile selection of backstop, overriding, and index cluthes in the industry PB series clutch features precision formed cams providing high torque capacities with excellent wear life. These models are suitable for general duty applications. A bonze seal maintains race concentricity. They a asymmetrical by design, so must be ordered according to rotation requirements.
PB series clutches are prelubricated with grease and are ready for installation. These units can be operated in ambient temperatures of +20° F to +125° F. All filler plugs are 1/4-28. All models have three filler holes at 120° except PB-3A, which has only one. Clutch models PB-5A through PB-16A can be oil lubricated by specifying on order.