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A disc brake is a type of brake that uses the calipers to squeeze pairs of pads against a disc (sometimes called a [brake] rotor) [1] to create friction. [2] There are two basic types of brake pad friction mechanisms: abrasive friction and adherent [ further explanation needed ] friction. [ 3 ]
A disc brake consists of a metal disc, or "rotor", attached to the wheel hub that rotates with the wheel. Calipers are attached to the frame or fork along with pads that squeeze the rotors for braking. Disc brakes may be actuated mechanically by cable, or hydraulically.
Compared to modern disc brakes, drum brakes wear out faster due to their tendency to overheat. The disc brake is a device for slowing or stopping the rotation of a road wheel. A brake disc (or rotor in U.S. English), usually made of cast iron or ceramic, is connected to the wheel or the axle.
The brake pad and disc (now both having the friction material), then "stick" to each other, providing the friction that stops the vehicle. In disc brakes, there are usually two brake pads per disc rotor, they both function together. These are held in place and actuated by a caliper affixed to the wheel hub or suspension upright. Racing calipers ...
The front brake assembly with vented discs was enclosed in a vented aluminium hub and the caliper was mounted onto the hub and gripped the disc from the outside. This kept the brake assembly dry and allowed the use of cast iron ventilated discs because the shrouding covered any unsightly surface rust on the disc. [ 19 ]
Aircraft disc brakes in the landing gear, used to brake the wheels while touching the ground. These brakes are operated hydraulically, pneumatically or electrically. In most modern aircraft they are activated by the top section of the rudder pedals ("toe brakes"). In some older aircraft, the bottom section is used instead ("heel brakes").