This document provides specifications for a Clutch Heavy Duty SF-825 Bearing Mounted clutch. The clutch has a shaft size range of 0.500-1.500 inches, a static torque of 150 lb-ft, and can operate at a maximum speed of 3,600 rpm. It is available in standard voltages of 6, 24, and 90 VDC. Dimensions and part numbers are provided for the various components. Maintenance requirements specify concentricity and tolerance standards for mounting components.