3.3" Diameter Qmark Marley Electric Motor 1550 RPM; 2.6 amps, 120 Volt # 7163-9739 Shaft: 5/16" x 1 3/4"; Rotation = CW Round Body-No mounting studs Motor case length 3 1/4" Suggested replacement reference for: JA2R314N, JA2R314 1 Year Manufacture Warranty