What is the difference between a brushed and a brushless angle grinder。
1、 Structural differences
The main difference between brushed and brushless structures of angle grinders lies in whether the motor rotor is wound with a stator winding and the control circuit used.
Most
brushed motors use two components: electric brushes and carbon brushes. Friction between the carbon brushes and the rotor metal plate causes wear, and the brushes should be replaced in a timely manner after wear, otherwise it will affect the normal operation of the motor; The rotor of a brushless motor does not have electric brushes, and instead uses a magnetic rotor with stator windings that generate a magnetic field through alternating magnetic fields to achieve the rotation of centrifugal fan blades. So brushless motors are more lightweight, convenient to carry and use.
2、 Performance difference
1. Speed stability
The brush motor of the angle grinder has a fixed speed, which may fluctuate due to external load changes. This is also why the brush motor needs to be constantly adjusted and the load should be taken into account during use. And brushless motors automatically adjust their speed according to changes in load, which can better adapt to changes in load. Therefore, during use, the brushless electric grinder has a more stable rotational speed and is more suitable for various processing scenarios.
2. Battery life
Due to the more efficient control circuit used in brushless motors, there are no factors such as brush wear and energy loss that occur in traditional brush motors, resulting in longer battery life and longer service life.
3. Noise and vibration
Due to the smoother operation of brushless motors, their noise and vibration levels are lower than those of brush motors.
3、 Advantages and disadvantages
Advantages of brushed motors: cheap price, long lifespan;
Disadvantages of brushed motors: high noise, unstable speed, easy wear and tear, and short service life.
Advantages of brushless motors: stable speed, low noise, long lifespan, and long battery life;
Disadvantages of brushless motors: The price is relatively high.
In summary, brushless motors have better portability, lifespan, usability, and energy-saving effects, while brushed motors are cheaper and suitable for short-term use. So when purchasing an angle grinder, it is necessary to choose according to actual needs.
