How A Brake Caliper Works

A brake caliper is one of your vehicles’ or bike's most critical components. Without a brake caliper, your car simply isn't safe enough to use until it's been repaired or replaced.

Brake calipers: how do they really work?

Your car wheels are attached to circular metal discs and these spin along with the wheels.
< The brake caliper fits over the rotating brake disc and works just like a clamp – step on the brake pedal or pull the brake lever and the brake pads that are inside of the caliper are pushed out via pistons to make contact with the spinning brake disc. The friction generated by the action of the brake pads on the brake disc is what slows the automobiles.
There are several types of brake caliper:

Floating Brake Caliper

Floating brake calipers have piston(s) on only one side of the brake disc but contains disc pads that make contact with with the sides of the rotor. The caliper slides back and forth on pins, acting as a clamp.
The moment you press the brake pedal, the piston in the caliper pushes the brake pad only on the inboard side of the brake disc. The floating caliper then slides on the bushings and compresses the outboard pad against the disc, initiating braking action.

What is the difference between a sliding caliper and floating caliper?

The sliding brake disc caliper type is mounted in a slot in the caliper adapter. It is a variation of the floating caliper design, using only one piston and operating on the same principle – the piston applies pressure to one brake pad and the movable caliper applies pressure to the other.

What can go wrong with your cars’ caliper?

A brake caliper has moving parts that can go wrong over time. When brakes seize it can be because the piston becomes stuck within the caliper, the pads become stuck to the disc brake, or on single-piston calipers the slide pins can seize. If the brakes seize when the vehicle has been unused then the symptoms are fairly obvious: you can't get the automobile to move.

What can be done to improve the brakes on my vehicle?

Short of removing and changing your vehicle’s brakes with larger brake rotors, you can fine-tune your present braking system to perform much better

1. Bigger brake caliper pistons: Larger pistons have greater clamping area and thus more clamping force over the brake rotor
2. More pistons: High-performance calipers that allow for more pistons – six-piston and even twelve-piston models can increase the clamping force of the caliper.
   Less heat retention: Brake air scoops can help. Larger discs can spread excess heat over a larger area.
3. Differential bore calipers It helps if the pistons that are closer to the rear edge of the caliper are larger. Differential-bore calipers use smaller pistons up front, larger pistons are placed towards the back.
4. Porsche Composite Ceramic Brakes (PCCB): These are among the best brakes you'll find in any street car. They're made from siliconised carbonfibre, can withstand very high temperatures, a 50% weight reduction over iron discs, a significant reduction in dust, and enhanced durability in corrosive environments over conventional iron discs. The discs are internally vented, similar to cast-iron ones, and cross-drilled. The cost, as you can imagine, is very very expensive.

Types of Brake Calipers
Types of Auitomobile Brake Calipers
How A Brake Caliper Works
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