Carbon brushes, also known as electric brushes, are widely used in many electrical equipment as a sliding contact. Carbon brushes are mainly used in the product materials of graphite, grease-impregnated graphite, metal (including copper, silver) graphite. Carbon brush is a device that transmits energy or signal between the fixed part and the rotating part of the motor or generator or other rotating machinery, it is generally made of pure carbon plus coagulant, the appearance is generally a square, stuck on the metal bracket, there is a spring inside to press it on the rotating shaft, when the motor rotates, the electric energy is delivered to the coil through the commutator, because its main component is carbon, called carbon brush, it is easy to wear. Regular maintenance and replacement should be carried out, and carbon deposits should be cleaned up.
The carbon brush looks a bit like an eraser strip for wiping a pencil, with a wire leading out on top. The volume is large and small. As a sliding contact, carbon brushes are widely used in many electrical equipment. The main materials of the products are electrographed graphite, impregnated graphite, metal (including copper, silver) graphite.