Marathon® Blue Chip® AC Motor, 4-Pole Continuous-Duty, Explosion Proof AC Motors, Severe Duty Motors, Inverter Ready Special Features, 40 hp, 230/460 V AC, 95/47.5 A, 60 Hz Frequency, 3 ph, 1780 rpm Speed, 1 Speed, XPFC Enclosure, 324T Frame, 2.13 in Dia x 5.53 in L Shaft, Reversible Rotation, 1.15 Service Factor, Ball Bearing, 148 ft-lb Torque, Rigid Base Mounting, 40 deg C, Insulation Class: Class F, Cast Iron, 10:1 Constant Torque Speed, 10:1 Variable Torque Speed, 30.37 in L x 25.63 in W x 20.35 in H Dimensions