A mechanical part that stops or decelerates a moving part in a machine. Commonly known as brakes and brakes. The brake is mainly composed of a brake frame, a brake, and an operating device. Some brakes also have an automatic adjustment device for the brake gap. In order to reduce the braking torque and structure size, the brake is usually installed on the high-speed shaft of the equipment, but large equipment with high safety requirements (such as mine hoists, elevators, etc.) should be installed on the low speed shaft near the working part of the equipment. on.

　　Some brakes have been standardized and serialized and manufactured by specialist factories for selection.

　　Electromagnetic brake is an ideal automatic execution element in modern industry. It mainly plays the role of transmitting power and controlling movement in the mechanical transmission system. The utility model has the advantages of compact structure, simple operation, sensitive response, long service life, reliable use, and easy realization of remote control.

　　It is mainly matched with series motors. Widely used in metallurgy, construction, chemicals, food, machine tools, stage, elevators, ships, packaging and other machinery, and in the case of power failure (anti-risk) braking and other occasions.

　　The drag torque that must be applied to stop or decelerate the mechanical moving parts is called braking torque. The braking torque is the basis for the design and selection of the brake. The size of the brake is determined by the type of the machine and the work requirements. The performance of the friction material (brake) used on the brake directly affects the braking process, and the main factors that affect its performance are the operating temperature and the temperature rise speed. Friction materials should have a high and stable friction coefficient and good wear resistance. Friction materials are divided into two categories, metal and non-metal. The former are commonly used cast iron, steel, bronze and powder metallurgy friction materials, the latter are leather, rubber, wood and asbestos.

　　Category

　　Electromagnetic brakes can be divided into electromagnetic powder brakes, electromagnetic eddy current brakes, electromagnetic friction brakes and other forms. It is also subdivided into dry monolithic electromagnetic brakes, dry multi-plate electromagnetic brakes, and wet multi-plate electromagnetic brakes. According to the braking method, the electromagnetic brake can be further divided into a power brake and a power brake.