Those who understand the structure of brushless brush DC motor products know that brushless motors have no spark friction combustion and no electric carbon brush head to increase friction noise. Therefore, in terms of structure, brushless brush DC motors are better than brushed motors in terms of noise and vibration. Now more and more medical equipment, intelligent robots, commercial products and other industries are beginning to use brushless brush DC motors, which are favored by the majority of customers.

DC brushless motors

But not all brushless brush DC motors are good, if the production is not fine, the quality does not meet the demand, there will be a variety of problems, such as large noise and vibration phenomenon, how to solve these problems? The following is a brief description of several common ways to reduce brushless motor noise and vibration, I hope it will help you!

1. Better bearings: the usual bearings include oil bearings and ball bearings.

Domestic bearings were previously criticized, but with the improvement of the quality of domestic bearings can be supplemented by foreign bearings, good quality, wear-resistant, rolling smooth, reduce the load strength of the bearing, optimize the life of brushless DC motor.

2. Choose better magnetic material – NdFeB material.

Good silicon steel plate with small size and high energy density, it will not be affected too much by the outside world to make the rotor get better balance inside the motor, neodymium magnets will not demagnetize over time, so neodymium magnets provide more stable performance over a longer period of time than other materials, which also means the diameter of the rotor can be reduced by reducing inertia, unbalance and vibration risk accordingly.

3. Improve the precision of the motor’s internal components and reduce errors.

Electric motor

High precision motors have straighter shafts and more balanced magnetism, preventing incremental errors from spreading into the motor design and eliminating unwanted noise and vibration.

In general, to reduce brushless brush DC motor noise and vibration, you can start from various aspects such as design, processing and parts assembly to seize the source of production and ensure stable brushless motor operation.

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