Why does DC motor bearings make noise?

DC motors generate noise when operating, but it is important to note whether the noise is unusual or above acceptable levels. For example, what is the cause of the noise from the motor bearings? The following Vshida micromotors are briefly shared with you.

1. Due to the low rigidity of its frame or casing, the DC motor will resonate in a narrow frequency range, increase the vibration of the stator, and produce abnormal vibration and noise.

2. The interaction of any pair of higher harmonics between the stator and rotor of a DC motor produces force waves, as well as associated vibration and noise.

3. The stator magnetic field of the DC motor is asymmetric, or the magnetic field ellipticity is serious.

4. Due to the loose stator core and stator coil, the electromagnetic vibration and noise of the stator will increase.

The above are the reasons for the abnormal noise of the DC motor, I hope to help everyone. If you need more details, please contact us.