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Published On: Mon, Aug 19th, 2013

How disc brake works. ✔

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This topic we will learn about disc brakes. As you all know brake is a critical part of an automobile. Disc brake is a type of braking system used to stop the wheel rotation of the vehicle and there by stopping the vehicle.

The components of the disc brake are shown in the figure:

1. Brake pad.
2. Calliper.
3. The rotor.

Brake pad: this s the unit used to apply the brake. The brake pad comes in contact with the rotor to apply the brake.

Calliper: this unit holds the brake piston and actually applies the brake to the rotor on the wheel hub.

The rotor: This is the unit to which the brake is applied and is a part of the wheel hub. The brake pad is fixed or bolted to the wheel hub.

When a vehicle moves, the wheels will rotate and attain some kinetic energy. So if you need to stop the vehicle, this kinetic energy need to be taken away from it. The brake actually does this function, but how does it achieves this? When you step on the brake pedal the brake gets applied, it takes off the kinetic energy from the wheels or in technical terms it converts the kinetic energy to the form of heat and stops the wheels.

How disc brake works?

How disc brake works

How disc brake works

This is a hydraulic brake system. When we step on the brake pedal, it pressurises the hydraulic brake master cylinder. The hydraulic pressure from the brake master cylinder reaches the brake calliper on which the brake pads are mounted. The brake pads further moves and stops the rotor which is a part of the wheel hub. Thus the wheel stops and the vehicle is idle.


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