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20 hp 3600 RPM, 46/23.1 amps 230/460 Volts 60 Hz Three Phase MotorNEMA 256T Extruded Aluminum Frame with Cast Aluminum End Bells, Keyed Shaft 1 5/8" Diameter x 4"Service Factor: 1.15 Overload protection = NoneC-Face Mount, Ball Bearings, Class F Insulation, Reversible1 Year Manufacture WarrantySpeed controllable motor for material handling, cranes and machine tools. 5:1 speed range at constant torque. NEMA design B. Brake provisions. Wiring diagram on motor name plate. TEFC = Totally-Enclosed Fan-Cooled. HD44