1/2 hp 1625 RPM 115/230V 5/8" Dia. Shaft Pedestal Fan Motor Leeson # 103720 1/2 hp 1625 RPM, 5.4/2.7 amps, 115/230V 60hz.; Single phase. 5/8" Diameter Shaft;Rotation = Reversible; Ball Bearings 10-32 mounting studs shaft end; Studs extend 1" on 5.14" bolt circle Automatic Overload Protection UL & CSA recognized; single speed