Why are brushless motors better than brushed motors in automation equipment?

1. Brushless is faster than brushed 2. Brushless motors are more efficient 3. Brushless motors have longer service life 4. Brushless motors are quieter 5. Brushless motors are more reliable

The reasons why brushless motors are better than brushed motors in automation equipment are as follows:


1. Brushless motors is faster than brushed motors

Assume brushed motors and brushless motors are rated the same. In this case, a brushless motor would be faster because it is more efficient than a brushed motor. This results in optimal power usage of brushless motors due to less friction and less heat generation, where the speed of a brushed motor is limited by the motor's brushes and commutator, whereas the speed of a brushless motor is determined by the bearings and the motor's speed control device.

2. Brushless motors are more efficient

Brushless DC motors offer several advantages over brushed motors. One of them is efficiency. The efficiency of brushless motors can reach more than 85% to 90%, and the efficiency of brushed motors can reach 75% to 80%. Since there are no brushes in the motor, mechanical energy losses are low, allowing efficient utilization of the supplied energy. This is why brushed motors are less efficient than brushless motors.

3. Brushless motors have longer service life

Brushless motors have over 10,000 hours of runtime. Brushed motors wear out faster than brushless motors because brushed motors contain a commutator and brushes, which cause mechanical and electrical friction between them during operation. Over time, motor brushes wear out due to electrical corrosion.

4. Brushless motors are quieter

Motors with more moving parts can cause more mess or noise due to friction, loose screws, etc. Brushless motors are quieter than brushed motors due to the electrical and mechanical noise generated by friction with the commutator. In brushless motors, there are no moving parts that can cause friction or other noise. This is why brushless motors are quieter compared to other motors.

5. Brushless motors are more reliable

The service life of brushless motors is much longer than that of brushed motors. Brushless motors are more reliable because they have few moving parts and therefore have less friction, energy loss, electrical or mechanical power loss, noise, wear, etc. These are the benefits of having few moving parts in the motor, which helps extend the life of the motor and makes it smaller, more compact, lighter, more efficient, etc.

Of course, this does not necessarily mean that you must choose a brushless motor. In reality, we should choose the appropriate motor based on actual needs.

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