Types of Brake Calipers

Types of Brake Calipers


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

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 is installed over the rotating rotor disc and works much like a clamp – depress on the brake pedal or pull the hand brake and the disc pads that are in the caliper are pushed out by pistons to make contact with the spinning rotor disc. The friction generated by the action of the disc pads on the rotor disc is what slows the automobiles.
There are various types of disc caliper:

Floating Brake Caliper



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

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



The sliding rotor 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 a brake caliper?

A brake caliper has parts that are moving when the brakes are applied that can go wrong after a period of time. When the brakes seize it can be because the piston becomes stuck within the caliper, the pads become stuck to the disc, or on single-piston calipers the sliding pins can seize. If the brakes seize when the vehicle has not been used for a period of time then the symptoms are fairly obvious: you can't get the auto to move.

Brake improvement tips

Instead of removing and replacing your vehicle’s braking system with larger disc brakes, you can fine-tune your present braking system to perform better

  1. Bigger brake caliper pistons: Larger pistons have greater clamping surface area and therefore more clamping force over the disc
  2. More pistons: High-performance calipers that allow for more pistons – 6-piston and even twelve-piston models can increase the clamping pressure of the caliper.
    Less heat retention: Brake air scoops can help in this area. Larger rotors can spread excess heat over a larger area.
  3. Differential bore calipers It helps if the pistons closer to the rear edge of the caliper are larger. Differential-bore calipers use smaller pistons at the 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 road car. They're made from siliconised carbonfibre, can withstand very high temperatures, a 50% weight reduction over iron discs, noticable reduction in brake dust, and enhanced durability in corrosive environments over conventional iron brake rotrs. The discs are internally vented, similar to cast-iron ones, and cross-drilled. The cost, as you can imagine, is very very expensive.

Brakingnews

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