All gears are metal, smooth transmission, wear-resistant, not easy to hit teeth. The stator windings of the motor are copper wire, reduce resistance and enhance conductivity, support CW/CCW control. This micro motor uses high quality butter to reduce friction, remain large torque but low noise and small dynamic loss. The synchronous motor gets constant under the rated frequency, very stable, not affected by voltage. Mainly used in instrument, automation, stage lamps and advertising display equipment, curtain automatic control, automatic voltage regulator, etc. Specification: Material: Metal Current: 0.1A Voltage: AC 220V Frequency: 50Hz-60Hz Power: 28W Speed(Optional): 10RPM, 15RPM, 20RPM, 30RPM, 40RPM, 50RPM, 60RPM, 80RPM, 110RPM Torque(kgf.cm): 38(10RPM), 22(15RPM), 16(20RPM), 11(30RPM), 9(40RPM), 7(50RPM), 6(60RPM), 4(80RPM), 3(110RPM) Shaft Type: Weight: 500g Package Includes: 1 Piece Permanent Magnet Synchronous Motor