Friction Disc
Friction discs are used in braking applications. Disc brakes have three main parts: brake pads, calipers, and rotors. Friction discs are made of friction materials that are bonded to metal plates.
Well-made friction discs wear evenly to ensure that they do not need to be replaced more often than necessary. However, even quality friction materials will wear down eventually and need to be replaced. Most friction discs are equipped with a wear indicator. When the friction material on the indicator reaches a certain level of wear, the disc brake pad emits a high-pitched sound, indicating the need for replacement.
Friction materials are used to increase friction in applications where a decrease in movement is desired, such as in braking mechanisms. Brake systems use friction materials to slow or stop wheels from rotating. When a brake is pressed, it activates a system that places the brake pad against a disc that slows the wheels of the vehicle. Friction is applied to the disc, which is attached to the wheel; the friction disc is the device that actually stops the wheel's rotation.