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The fixed element is a brake block composed of a small working area friction block and its metal back plate. There are 2~4 brake blocks in each brake. These brake blocks and their actuating devices are installed across the clamp bracket on both sides of the brake disc, which is always called the brake clamp. The brake disc and the brake clamp together constitute the pincer disc brake.
According to the different installation position, the brake can be divided into wheel brake and central brake. A brake whose rotating element is fixed on the wheel or half axle is called a wheel brake; A brake whose rotating elements are fixed to the drive shaft of the driveline is called a central brake. Wheel brakes are generally used for service braking, but also for emergency braking and parking braking.
