Air Motor 5 hp HP Running Torque @ Max Pressure 132 in-lb 175 cfm Max Air Flow No Load RPM 2 500 RPM Shaft Dia 3/4 in Shaft Length 1.53 in Foot Mounting Port Size 1/2 in NPT REV Rotation Housing Material Cast Iron Gray Metallic Finish 300 RPM RPM @ Max Torque Max Air Pressure 100 psi Keyway Length 1.34 in Overall Length 8.48 in Overall Width 5.5 in Overall Height 6.03 in 0 Degrees to 250 Degrees F Operating Temp Range Includes Muffler