Air Motor Output Power @ Maximum Speed 4 hp Maximum Torque 84 in-lb No Load Speed 3 000 RPM Maximum Flow Rate 130 cfm Shaft Diameter 5/8 in Shaft Length 1 3/8 in Mount Type Face Inlet Size 1/2 in Air Inlet Type NPT Rotation CW/CCW Housing Material Cast Iron Shaft Material Grade C1137OR C1141 Bearing Protection Not Applicable Maximum Operating Pressure 100 psi Includes Muffler Keyway Width 1/8 in Weight 21 lb Housing Material Grade G2500 Housing Material Finish Painted