Disc Brake


The disc brakes are a type of brake system having vehicles play a key role in the braking of the car engine . Initially they were used in sports- type vehicles as they needed to have a greater ability to brake, however, with the passage of time, disc brakes have been introduced in the front axle of vehicles in general in order to improve the ability to brake. brake in the car.

What is the disc brake?

Disc brakes are parts that are responsible for creating just and necessary friction to be able to stop the advance or rotation of the wheels of a vehicle, thus allowing it to stop.

  • Disc brake features
  • What is it for
  • How Disc Brakes Work
  • Breakdowns
  • Disc brake maintenance
  • Importance

Disc brake features

Among the main characteristics of the disc brake are the following:

  • They are the type of system that is most used today in the front axles of cars.
  • They produce a friction movement that has the ability to reduce or completely stop the advance of the car’s tires.
  • They do not tend to suffer from wear easily as they are manufactured with highly resistant materials.
  • So generally , the disk brakes are manufactured using a cast iron modular graphite sheet form.
  • Some discs can also be manufactured using materials such as carbon matrix, especially those that are intended for racing or in the brakes used in aircraft.
  • Another material that can be used is aluminum with a silicon carbide base, which turns out to be quite light and attractive, however, it has little capacity to dissipate heat.
  • They are composed of a metal rotor disc on which the pressure of the brake calipers is exerted.

What is it for

disc brake is used to guarantee the reduction in terms of speed that the wheels of the vehicles have when they are directed from one place to another. Depending on the surface, there may also be different types of discs, each with its own and specific functions, in such a way that it is common to find:

  • Solid or smooth discs that are usually fitted at the factory.
  • Ventilated discs that have the ability to evacuate the high temperatures that occur due to the friction of the disc pads.
  • Perforated discs that eliminate heat much better because they have a series of holes for adequate ventilation, although at the same time they tend to get hotter as they have a smaller braking surface than grated discs.
  • Grated discs whose main function is to eliminate and clean the residues that accumulate over time on the disc and on the pad, thus reducing the effectiveness of braking.
  • Mixed discs that combine a series of systems and that mix their perforations with stripes and with ventilation to find a better balance between the qualities of each type that makes it up.
  • Ceramic discs that have a type of component made of ceramic that significantly improves their resistance to avoid the formation of fractures and also increases their resistance to high temperatures. Their resistance is incredible and they can withstand all kinds of inclement weather without causing any deformation in them.

How Disc Brakes Work

A system of disc brakes starts working the moment the driver of the vehicle depresses the brake pedal . At that moment, a hydraulic pump is activated immediately and allows the brake fluids to flow directly to the brake calipers. This situation exerts a type of pressure that causes the pistons to move, pushing the pads at the same time . These pads are then responsible for producing friction on the brake disc and at the same time produce kinetic energy which dissipates the heat that is produced in the process.

A very important aspect regarding the proper functioning of disc brakes is that, when they are changed, the pads must also be changed because they will have the same level of wear as the discs, this happens because in operation, all the elements of braking are interrelated.


When you begin to feel or notice a vibration in the direction of the vehicle when it brakes , it is time to change the disc brakes. This situation largely depends on the use that is given to the vehicle and the way of braking that the driver has. It may be that the vehicle begins to have some braking problems which are usually due to a lack of brake fluid , wear of the pads and discs , brake pump problems or wear and misalignment of the tires .

Disc brake maintenance

An aspect of great importance in the maintenance of disc brakes is that they must be aware of and properly control their wear. The ideal is to change the pads every 20,000 kilometers and it should be taken into account, as a general rule , that they wear out more easily in cities than on open roads due to the fact that braking is more common and constant.

Another relevant aspect is that the brake fluid must always be kept in good condition and at optimal levels, as this is the best way to prevent corrosion from occurring and at the same time it is possible to increase the useful life of the parts.


The importance of the disc brake is enormous when driving a vehicle of any type. It is through this mechanism that the car can brake whenever necessary. It is of vital importance because it is the system in charge of ensuring that the speed can decrease on all the wheels of the car until it comes to a complete stop.

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