3.3" Diameter Qmark Marley Electric Motor 1/60 hp; 1500 RPM; .81 amps, 120 Volt # 7163-9763 Shaft Size 5/16" x 11/16"; Rotation = CW Motor case length 2 1/8" 2 Studs on Back for mounting Suggested replacement reference for: JA2C522N, JA2C522 1 Year Manufacture Warranty