Electrical Type: POLYPHASE HP: 1 KW: 0.75 RPM: 1748 Frame: 143T Enclosure: Open Drip Proof Phase: Three Voltage: 200 Rotation: Reversible Overload: None Material: Rolled Steel Bearings Type: Ball / Ball Bearings SE Type: Ball Bearings OSE Type: Ball Mounting: Rigid Base Amperage: 3.2 Shaft Type: Keyed Shaft Extension: 2.250" Shaft Diameter: 0.875 Bearings DE Type: Ball Bearings ODE Type: Ball Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2010|Inverter duty 10:1 variable torque and 2:1 constant torque|1.15 Service Factor on sinewave, 1.0 Service Factor on IGBT power|Standard assembly F1, reversible to F2 assembly|Dual frame mounting holes