According to the vibration motor manufacturer, the noise when the vibration motor is running may be caused by the following reasons:
1. Bearing wear and failure;
2, fixed, rotor loose core;
3. The voltage is too high or unbalanced;
4, the bearing lack of grease;
5. Fan hits wind cover or wind duct is blocked;
6. Uneven air gap, stationary rotor phase friction.
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Post time: Sep-01-2019
