Why is the motor noisy?

Analysis of the cause of noise in the motor:

There is noise when the motor is running, usually due to failure of the starting equipment, poor motor assembly and bearing damage.

Poor contact of the main contact of the starting equipment causes phase loss operation, or the motor winding is disconnected in one phase, and it will beep when it is running. Starter equipment failures can be handled. In the latter case, check the motor windings with a multimeter or a straight resistance meter and repair or rewind the windings as appropriate.

Analysis of the cause of noise in the motor

There are two common situations in which the motor is poorly assembled. First, the end screws and the stator’s solid screws are not tightly tightened around, and the assembly around the assembly is uneven, causing the end cover to be installed incorrectly, which affects the concentricity of the stator and rotor. The second is the inner bearing, the outer casing and the rotating shaft, and the end cap shaft. The hole fit is too loose, causing the stator core to rub against the rotor and should be properly assembled.

Serious wear and tear of the bearing balls, rollers, inner casings and spacers, as well as metal peeling, cause a large metal impact and vibration when the motor is running. The bearings should be replaced at this time.

In addition, after the stator winding is re-wound, the insulating paper is not trimmed and rubbed with the rotor, the coupling is loose or the shaft is deformed, etc. Noise may occur. These opportunities should be diagnosed after the cause is identified.

The above is the analysis of the cause of noise in the motor. If you encounter such a situation, you can check the above points to check it, so that you can solve this problem better.

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