Air Compressor Pump Lubrication Type Splash Lubricated Number of Stages 1 Maximum Output Power 5 hp Free Air Flow Rate @ Maximum Pressure 19.5 cfm @ 120 psi Number of Cylinders 2 Maximum Operating Pressure 120 psi Flywheel Diameter 16 1/2 in Flywheel Included Yes Pump Speed 788 RPM Construction Cast Iron Groove Section B Number of Grooves 2 Valve Type Disc Valve Material Swedish Steel Rotation CW Stroke Length 3 in