36mm, RS-540 motor 64:1, 36mm Planetary Gearmotor, RS-540 Motor $42.35 64:1 Reduction gearmotor with RS-540 motor Max Effeciency: 227 RPM, 397.1 oz-in, 6.6 A263 no load RPM, 2527 oz-in stall torque* more information / order Code: MP-36064-540