Electrical Type: POLYPHASE HP: 7 1/2 KW: 5.6 RPM: 1770 Frame: 213T Enclosure: Totally Enclosed Fan Cooled Phase: Three Voltage: 200 Rotation: Reversible Overload: None Material: Cast Iron Bearings Type: Ball / Ball Bearings SE Type: Ball Bearings OSE Type: Ball Mounting: Rigid Base Amperage: 22.08 Shaft Type: Keyed Shaft Extension: 3.380" Shaft Diameter: 1.375 Bearings DE Type: Ball Bearings ODE Type: Ball Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2142|Inverter duty 10:1 variable torque and 10:1 constant torque|1.15 Service Factor on sinewave, 1.0 Service Factor on IGBT power|Standard assembly F1, reversible to F2 assembly