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Disc brakesBrakes are one of the most important parts of a vehicle in terms of safety. In case braking does not work it can end badly. Therefore, a regular check of the brakes and the brake system is essential.
There are two types of brake on vehicles: the disc brake and the drum brake. Spirits still do not agree which brake is the better one. Both brakes have advantages and disadvantages.
The invention of the disc brakeThe disc brake was invented at the end of the 19th century. Initially, this invention was designed for bicycles. The first patents were in the USA.
From the middle of the 20th century, the disc brake was then also installed as standard in motor vehicles.
The construction of a disc brakeThe basic principle of a disc brake is that the wheels of a vehicle are slowed by a brake disc. The brake disc is attached to the wheel hub.
Above the brake disc is a caliper-like housing, the caliper, fixed in which - depending on the brake - one or more brake pistons are located.
The brake pads, which adhere to a carrier plate are mounted on the brake disc exactly opposite the brake piston. On the brake piston, a hydraulic connection is mounted, which is connected to the brake hoses. When the brake is applied, the pistons are now pressed against the brake pads by the pressure exerted by the brake fluid.
Fist caliper brake and fixed caliper brakeIn the automotive sector, there are two main types of disc brakes: the fist caliper brake and the fixed caliper brake.
In a fixed caliper brake caliper is immobile and usually has several brake pistons on both sides of the brake disc.
In a fist caliper branke the caliper is displaced. The fist caliper brake has a caliper and a brake carrier, as well as a large brake piston.
The brake carrier of this type of disc brake is statically fixed to a component of the vehicle while the caliper can move back and forth. For this purpose, two guide pins are attached to the saddle.
When the brake pedal is actuated and the hydraulic pressure is thus generated, the brake piston initially presses the brake pad against the one side of the brake disk in the case of the fist caliper brake. In the continued pressure is applied and since the brake disc itself is immobile, the caliper is moved axially and then presses on the other side of the brake disc, the second brake pad against the brake disc.
So while in the fixed caliper brake brake pistons are mounted on both sides of the brake disc, which exert pressure on the brake disc on both sides of the brake disc, there is only one piston in the caliper brake, but also leads by its mobility to bilateral pressure on the brake disc.
In automobiles usually the fist caliper brake is used. In motorsport, such as in Formula 1 and in vehicles, in which a greater braking power must be achieved, usually the fixed caliper brake is installed.
In addition to the disc brake, there is also the drum brake, which is also installed in the car.