Why are carbon brushes more important than metal brushes?

2021-08-23 11:25:26

Why are carbon brushes more important than metal brushes? The carbon brush is actually just a small piece of carbon, which is used to pass current through the motor. Without carbon brushes, the motor will not work. Now, do you think this is important? Compared with metal brushes, the purpose of carbon brushes is to reduce the wear of the commutator. In many cases, the manufacturing time of carbon brushes is so long that they will not wear out when using other equipment. When they wear out, they can be replaced. If you want to switch to metal brushes, the commutator may be about to break when the motor runs out and the carbon brushes are worn out.

This situation is somewhat similar to the vibration pad and the rotor. It is possible to construct brakes with steel pads and rotors, but the rotors will wear out quickly. The carbon brush is one of the basic components of the motor in operation. They can be defined as elements that establish a connection between the stationary part and the moving part of the motor (rotor).

In short, carbon brushes can reduce damage to the motor. Carbon brush blocks (called brushes) transfer current from the fixed parts of the motor to the moving parts. These brushes also transfer electrical energy from the outside of the motor to the middle or rotating area of the motor. Carbon brushes are soft and therefore tend to wear due to the friction they bear. This is ideal wear when the alternative is wear of the communicator. The communicator is a ring compressed by carbon brushes. Their design makes them easy to change. Although they may not be suitable from the beginning, as the use time increases, the brush will effortlessly rest on the communication ring.