Generator motor electric tool carbon brush

Short Description:

A carbon brush is a device that transmits energy or signals between the fixed part and the rotating part of a motor or generator or other rotating machinery. It is generally made of pure carbon plus a coagulant and acts on the commutator of a DC motor. The application materials of carbon brushes in products mainly include graphite, greased graphite, and metal (including copper, silver) graphite. The appearance of the carbon brush is generally a square, which is stuck on a metal bracket. There is a spring inside to press it on the rotating shaft. When the motor rotates, the electric energy is sent to the coil through the commutator. Because its main component is carbon, it is called carbon. Brush, it is easy to wear. Therefore, regular maintenance and replacement are required, and carbon deposits are cleaned up.

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Product Detail

Generator motor electric tool carbon brush

The carbon brush is a sliding contact body that conducts current. The function of the carbon brush is to rub against the surface of the generator slip ring and play a conductive role. It is to introduce the rotor current required for the operation of the motor into the rotor coil through the connecting piece on the slip ring. The fit and smoothness of the brush and the connecting piece, and the size of the contact surface affect its life and reliability.

Precautions when installing and using carbon brushes

1. Grind the arc surface of the carbon brush to make it basically consistent with the commutator or collector ring;
2. The carbon brushes work within the surface of the commutator or the collector ring, and cannot be close to the edge of the collector ring;
3. Appropriate clearance should be reserved between the carbon brush and the inner wall of the brush holder. After the carbon brush is installed in the brush holder, it is advisable that the carbon brush can move freely up and down.