We all know brush motors and brushless motors, but the relationship between the two is still rather vague, some friends ask: Why do brushed motors need carbon brushes? What is the difference between a carbon brush motor and a brushless motor?Vacuz give you an introduction! I hope this knowledge can help you!

Why do brushed motors need carbon brushes?

Carbon brushes are actually a bit like the eraser on a pencil, with wires leading out of it, as a sliding contact piece, which will produce a certain amount of friction, the main materials are electrochemical graphite, grease dipped graphite, etc.. Mainly used in the motor commutator or slip ring above, as a conductive contact body, there is a certain mechanical strength and commutative spark instinct.

Many friends like to take the brushless motor and carbon brush motor for comparison, so what are the differences and differences between the two?

1, the scope of application.

Brushless motor: commonly used in the high precision of the model, UAV, plant protection machinery, these products speed and precision requirements are relatively high.

Carbon brush motor: many common power equipment use carbon brush motor.

2. Service life.

Brushless motor: long life, usually can be used for tens of thousands of hours, but also depends on the quality of the bearings.

Carbon brush motor: because the carbon brush will have a certain wear and tear, so the life is relatively short, to a certain time will need to replace the carbon brush, or bearing wear is easy to damage.

3、Use effect.

Brushless motor: digital frequency control, speed controllability, a few revolutions per minute to tens of thousands of revolutions per minute, can be easily achieved.

Carbon brush motor: speed control effect is not very good, the service life will be relatively short.

4、Energy saving.

Carbon brush motor compared to brushless motor, more power consumption, brushless motor is often used in inverter technology control, like air conditioning and refrigerator lights, more power saving.

5, maintenance: brushless motor maintenance-free, carbon brush motor needs to replace the carbon brush, maintenance is more frequent.

Brush motor why use carbon brushes? What is the difference between a carbon brush motor and a brushless motor? I believe that after reading this article, we have a certain understanding, I hope it can help you!

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