Other performance difference of brushless motor and brushless motor

1. DC brush motor control accuracy is high.


DC brush motor is usually used with reducer and decoder, so that the output power of the motor is larger, the control accuracy is higher, the control accuracy can reach 0.01 mm, and the moving parts can be stopped in almost any desired place. All precision machine tools are controlled by DC motor. Brushless motor is not stable in starting and braking, so the moving parts will stop in different positions every time, and the positioning pin or limiter must be used to stop in the desired position.


2. The use cost of the direct-current brush motor is low, and the maintenance is convenient.


Because of the simple structure of the DC brush motor, the production cost is low, the manufacturer is more and the technology is mature, and the application is also widely used, such as the factory, the machine tool, the precision instrument, etc. If the motor fails, only the carbon brush needs to be replaced, and each carbon brush needs only a few yuan, which is very cheap. The brushless motor technology is not mature, the price is high, and the application range is limited, mainly on the constant-speed equipment, such as frequency-changing air-conditioner, refrigerator, etc. The brushless motor is damaged and can only be replaced.


3. No brush, low interference


The brushless motor removes the brush, and the most direct change is that there is no spark produced when the brushless motor is running, which greatly reduces the interference of the electric spark to the remote control radio equipment.


4. Low noise and smooth operation


Brushless motor is without brush, running friction is greatly reduced, running smoothly, noise will be much lower, and this advantage is a great support for the stability of the model.


5. long life and low maintenance cost


Without brush, the wear of brushless motor is mainly on bearings. From a mechanical point of view, brushless motor is almost a maintenance-free motor, if necessary, it only need to do some dust removal maintenance.