The Disc Brake is a Device for slowing or stopping the rotation of a wheel. A Brake Disc (Rotor), usually made of Cast Iron / Ceramic, is connected to the wheel or axle. To stop the wheel, friction material in form of Disc Brake Pads (mounted in a device called Caliper) is forced mechanically, hydraulically or electro-magnetically against both sides of the disc. Friction causes the disc & attached wheel to slow or stop.

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