When the motor rotates, the rotor collides with the inner circle of the stator, which is called motor sweep; When the three-phase asynchronous motor produces this phenomenon, the outer surface of the rotor and the inner circle of the stator will appear scratches, which indicates that the rotor and stator gaps are uneven. Here is a simple understanding with Senli Motor Xiaobian.

       Severe sweeping can cause The stator inner circle locally produces high temperature, and the insulation on the surface of the groove becomes brittle at high temperature, resulting in winding grounding or short circuit, which can also cause motor vibration and noise, and reduce the motor performance. There are many and mutual reasons for electric machine sweeping Interweave.

       In minorThree-phase asynchronous motorIn general, ball bearings are used in the front and back ends, and in medium-sized motors, roller bearings are generally used in the transmission end, ball bearings are used in the other end, and plain bearing structures are also used. Bearing heating is the most common fault of asynchronous motor, bearing heating, light dilution of lubricating oil leakage, heavy will damage the bearing.

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