This is the surface that the brake pads make contact with to slow your vehicle. It’s attached to the wheel hub and turns with the wheel. The rotor is made of cast iron or a steel/cast iron composite. One or multiple pistons to push the brake pads against the rotor when you brake.Ī bleeder screw to allow for servicing the brakes and replacing the fluid.Ī rubber piston seal that prevents brake fluid leakage and retracts the piston when the brakes are released.Ī dust boot to keep contaminants out of the cylinder. It contains the following components:īrake pads are a friction material bonded to a metal plate that helps stop your vehicle. It frames the rotor, looking and functions like a c-clamp. The caliper is an assembly mounted to the vehicle with a bracket. To stop a wheel (and your car), a disc brake uses a caliper fitted with brake pads to grab a spinning disc or rotor. They are mounted on the front and/or rear axle. More details below.ĭisc brakes are found on most vehicles today. The drum brake assembly, equipped on some vehicles, is also designed to stop your vehicle when other points on the system are activated. The disc brake assembly is designed to safely stop your car when activated. Brake friction material is pushed against the brake disc or drum, slowing or stopping your vehicle. There, wheel cylinders convert that hydraulic pressure back to mechanical force. The pressure is transferred via the brake fluid through the brake lines and/or brake hoses (flexible tubes) that connect the lines with brake assemblies at each wheel. This creates hydraulic pressure, generating a much bigger force than that of the small effort of pressing down on the pedal. A piston compresses brake fluid inside the master cylinder located under your vehicle’s hood near your engine.
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