Air Compressor Motor 3.7 HP Motor 56 Frame 5/8 Inch Shaft 230 V ? Feature: The air compressor motor is made of high quality steel material with high strength and long service life Multiple cooling holes on the air compressor motor for rapid heat dissipation Air compressor motors are suitable for air compressors, metal cutters, pumps, fans, transportation machinery mixers, etc This air compressor motor is a unidirectional motor ? Specification: 3.7 HP operating horsepower Rotational speed: 3450RPM Shaft diameter: 5/8 inch NEMA frame size: 56 230V ? Package includes: 1 x 3.7 HP motor 1 x manual