Disc Brake Rotor Assembly

A flat circular metallic device with a center mounting area of various configuration (recessed, flat, protruding, shouldered, etc.), it also includes the mating hub, and may include items such as roller cups, studs, and the like. It is a component of a caliper type brake system designed with a flat machine braking surface which may be of a solid, ribbed or space designed for cooling purposes. For a rotor without a hub see rotor, disc brake.