1) YR series three-phase asynchronous motor winding has reliable and stable insulation. Its stator adopts the structure of external pressure mounting and rotator uses the high strength, painted, flat-type copper cable. Coil is with high mechanical strength. Collector ring and carbon brush are placed outside of the end cover, which can protect the coil from the pollution of dust. 2) YR series motors have the advantages of high torque, little vibration, high frequency, low noise and reliable operation. 3) YR series motors are widely used in mining machinery, such as winch, ball mill, blowers, pumps, wire drawing machines, rolling machines and other mechanical equipment.