This document provides specifications and part numbers for G-Order clutch couplings including: - Dimensions and part numbers for taper bushings that fit various bore sizes between 1/2" and 1-1/4". - An exploded view diagram of the replacement parts for the clutch coupling assembly including the rotor and field, armature hub and plate, bearings, and other components. - Technical data for a Model 305 clutch coupling including weight, torque ratings, speeds, voltages and currents specifications.