No-load Speed: 10RPM, 20RPM, 30RPM, 50RPM, 100RPM, 200RPM, 300RPM, 400RPM, 600RPM. Power: 200W. Silent & High Torque，10/20/30/50/100/200/300/400/600RPM. The use of pure copper coil wound rotor is not easy to heat, and the service life is longer.
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