What is the disc brake system

Disc brake: this is how braking works with the brake disc!

Regardless of whether it is red traffic lights, traffic jams or dangerous situations: you always have to be able to blindly rely on your braking system. We have already told you how the braking system is constructed and how it works. We have also already introduced you to the drum brake. Today we are dealing with another, widely used braking system, namely the disc brake. We will now tell you exactly how the braking process works here:

Disc brake - components:

The disc brake is the most widespread braking system - even before the drum brake - and has largely established itself in modern vehicles. The most important components of this braking system are:

Disc brake function:

The mechanical principle of the disc brake is similar to the principle of the brake drum. In both cases, kinetic energy is converted into heat through friction, which brakes the vehicle.

The brake disc is firmly connected to the wheel hub. If the wheels are moving, the brake disc is also moving. The brake disc is enclosed by the brake caliper. This is where the brake pads are located. If you now press the brake pedal, the brake pads are pressed against the brake disc by a piston in the brake caliper. The friction brakes the brake disc and thereby also the wheels.
If you end the braking process and take your foot off the pedal, the brake piston is pulled back again by elastic sealing rings. The brake disc is free again and the wheels can turn again without resistance. Pretty easy, isn't it?

Advantages of the disc brake:

This braking system also has some advantages, which we will tell you below:

  • High thermal load capacity due to good cooling
  • Uniform response of the braking process
  • Uniform wear of the brake pads
  • Automatic adjustment
  • Low sensitivity
  • Relatively easy repair in contrast to the drum brake. However, only experienced screwdrivers should dare to change!

Disadvantages of the disc brake:

Of course, we don't want to withhold the disadvantages of the disc brake from you:

  • Relatively high weight
  • Higher price class than the drum brake

As you can see, this system also has its advantages and disadvantages. Nonetheless, the disc brake has largely replaced the drum brake as the standard brake system.
Always remember: your braking system is a safety-relevant component in your vehicle. Please do not fix it if you are not one hundred percent sure what you are doing, but seek help from a professional. If you are already an accomplished screwdriver, you can change defective brake discs yourself and simply replace the brake caliper.
Next time we will give you some good tips on how to prevent tire wear. Until then: super braked ride!