Car Disc Brake System Components - The following is an explanation of the components of the car's brake system that you should know about automotive lovers. Basically, the function of a car's disc brakes is to control the vehicle's speed. Let's see the article below.

Brakes are one of the most important parts of a vehicle. This portion will ensure the safety of the driver or passengers in it.

Basically, the role of car disc brakes itself is to regulate the speed of the vehicle so that it can run or stop according to the demands of the driver.

Unlike traditional car braking which relies on drum brakes or drum brakes, car manufacturers are starting to abandon these types of brakes and switch to disc brakes, both front and rear.

This is done with the aim of improving the car's braking system, especially at high speeds. When disc brakes give the car the best stop.

Using all-disc brakes on a car eliminates the need to brake long distances; in other words, reducing the stopping distance.

Disc brakes ensure the safety of the driver and passengers in the car. In addition, there are several components of car disc brakes that are no less important to learn, all of which will be explained in detail below.

List of Car Disc Brake Components

List of Car Disc Brake Components

The following is a list of car disc brake components, including:

Brake Calipers (Calipers)

The brake calipers themselves move mechanically to clamp the brake pads against the disc, making them an essential feature or component of disc brakes. The brake calipers are also located to support the brake linings and brake pistons.

There are two types of automobile disc brake calipers, and both use hydraulic pressure to control brake fluid pressure as it enters the system via brake lines or cables.

Floating Calipers

The brake caliper mounted on this kind of brake support caliper can slide and move left or right after learning how to do it.

In this type, the brake piston is accessible on one side. As the piston moves to press against the brake pads, the other side acts by clamping the brake pads next to it.

Fixed Calipers

When using a fixed caliper, it is paired with a brake support caliper so that the caliper does not move and only the brake piston is in charge of pressing the brake pads.

Brake Pads (Brake Pads)

These brake pads press against the disc to create friction, which stops the disc brake from rotating.

For this reason, it is highly recommended to choose brake pads from a reputable manufacturer having superior brake lining materials. Semi-metallic, asbestos, sintered and ceramic are all options for canvas.

The friction force and heat resistance of brake pads are important factors to consider when purchasing them as they are needed to effectively stop the disc from rotating.

Usually, the better the brake pad material, the more expensive it is, so don't be surprised by this type of sports car, brake pads are priced at millions of rupiah.

Disc Disc (Disc)

Discs, or disc brakes, are the part directly attached to the axle, which rotates as the wheel rotates.

In addition, the disc brake component of this car is an important part of the car's disc brakes because it functions as a medium that is pinched or pinched by the brake pads so that braking occurs.

Cast iron is the most common material for these discs, but ceramic matrix composites or carbon composites, which dissipate heat more quickly than cast iron and are therefore better for braking, are also available for use in high-speed luxury vehicles.

Until now, at least two different types of car discs have appeared, including:

Solid Discs

For the first time, there are no gaps around the disc, and the shape and design are solid. However, there is no reason not to trust braking power because it is proven to have a strong grip.

Ventilated Discs

With their thin, perforated discs, ventilated discs outperform traditional solid discs in terms of cooling and heat dissipation during braking.

Caliper Bracket (Brake Support Caliper)

Car Brake Calipers

To ensure that the caliper remains in position and does not move, a caliper bracket must be attached to the car's disc brake assembly. Connected to the steering knuckle is the actual installation.

Piston Brakes

Still within the scope of the caliper, the piston brake is inside the caliper which is in the form of a tube with a curved end (coakan) as a place for dust protection rubber.

The piston brake task is to reduce or stop the wheel rotation by pressing or pushing the brake lining against the disc.

Piston Seals

Inside the piston there are various parts, one of which is the piston seal, which is made of heat-resistant material from brake fluid.

When the brake lever is depressed, a piston seal mounted on the cylinder prevents brake fluid leakage during hydraulic operation. The piston seal also serves to retract the piston back after braking.

Master Cylinder

Whether or not a car's disc brakes operate depends on the brake master cylinder, where the brake master cylinder will translate the mechanical action of the brake pedal into hydraulic pressure. The disc brake component of this car features a piston component that attaches to the brake pedal.

From this piston will push oil or brake fluid based on Pascal's law. As you can see in the image below, there are two different types of master cylinders.

Tandem Type Master Cylinder

When using a tandem drivetrain, the rear and front wheels are controlled independently by two hoses and two pistons.

If one of the pistons fails, the other piston may still perform the braking function, making the system safer to use while in operation.

Single Type Master Cylinder

The single-type master cylinder, as the name suggests, carried only one outlet hose and one piston, with one part serving to control all four wheels, making safety somewhat compromised as damage meant braking would be limited.

Reservoir Tanks

Normally, the reservoir is coupled to the master cylinder and has sensors that detect high levels of brake fluid so that if the oil level drops below a certain level, the dashboard indicator will light up. Reservoir is used to store brake fluid reserves.

Brake Fluid (Brake Oil)

Under normal conditions, the amount of brake fluid should not decrease if there is no leakage. However, brake fluid will not work properly if it is very dirty.

This is because the brake fluid acts as a medium for transmitting power from the brake pedal to the caliper, so that the brake lining clamps the disc.

In addition to being used for its intended purpose, brake fluid is classified based on the boiling point of each type, the difference is made clear by the uniformity of the packaging labeled point 3, point 4.

As a result, as a car owner, you have to pay more attention to the brake fluid requirements that will be used later, so that braking can be done properly.

Brake Booster

The intake manifold is attached to a membrane that acts as a brake booster. If there is a vacuum in the intake manifold, the membrane connected to the master cylinder engages the brake pedal but not the brakes.

In addition, the brake booster acts as an auxiliary device that reduces the effort required to apply the brake pedal without reducing braking power, and this single component increases braking energy when the driver applies the brakes.

This means that the brake booster reduces the amount of force required by the driver to apply the brake pedal, allowing the driver to feel the car more lightly on the brake pedal during braking.

Hydraulic Hose

The hydraulic hose enters the fundamental component of the car's disc brakes, because this is where the distribution of brake fluid to each brake caliper occurs with hydraulic pressure.

However, keep in mind that hydraulic hose pressure varies and changes constantly, so a sturdy material such as steel is used to ensure that no brake fluid leaks out later.

Brake pedal

The brake pedal is the main component of the car's disc brakes to trigger the braking system.

In general, the brake pedal is made with a lever/long arm, which is used to modify the driver's braking demands, because the working concept of the brake pedal is the same as the principle of a simple lever, because it only needs to be stepped on. to generate large compressive forces.


The following are questions and answers about the components of a car's disc brake system, including:

Car Brake Pads

What Components Serve to Directly Press Disc Brake Pads?

In a disc brake system, the piston presses against the brake pad plate, which in turn tightens the disc brake against the surface of the piston. This component is cylindrical in shape.

Discs: Discs or discs function as a medium that will rub against the brake pads so that the wheel rotation can be stopped.

What is the Name of the Component for Storing Brake Fluid?

Reservoir is a component that helps collect extra brake fluid or fluid. The reservoir tube is connected to the master cylinder.

Inside this tube there is generally a sensor to measure the volume level of brake fluid. Consequently, if there is a lack of fluid in the brake system, the multi-info display will indicate this.

What Are the Drum Brake Components and Their Functions?

Braking is carried out using drum brake components, which function as a friction medium for the brake pads.

This will cause the car's speed to drop, and the engine will slowly stall. The vehicle's wheel hub houses this component. Brake drums or drum brakes are made of solid material and are heat resistant.


So, those are some components of the car's disc brake system that we have summarized. Disc brakes ensure the safety of the driver and passengers in the car. Thus this article may be useful.

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