Disc Brakes: What Are They and What Do We Need To Know More about It

Disc Brakes: What Are They and What Do We Need To Know More about It

Disc brakes are found on most modern vehicles these days. The disc brake system is extensively used on the front wheels of modern cars and in mid-range two-wheelers like sports bikes. There are two kinds of disc brakes. One is named the ” floating type disc brake” having piston on one side of the disc rotor and “opposed piston type disc brake” having pistons on both sides. The floating brakes are also named as the sliding pin brakes. You can easily procure Car Spare Parts Online.

The common type of disc brake is the single-piston floating caliper. These days, there is a high demand for disc brakes inside modern cars like sports cars as it is significant for them to function well.

When it comes to how disc brakes work; there are three core components of a disc brake, these are:

  • Brake pads
  • Caliper which comprises a piston
  • Rotor, which is mount to the hub

What is a disc brake?

When it comes to disc brake and disc braking systems, there are four critical parts: The pads, calipers, rotors, and hardware. The system is accountable for perfect braking. Though, as with any other part within your vehicle, every single aspect of the braking system serves a distinct function.

What are differences between Disc Brake and Drum Brake?
  • A drum brake is a small shaped drum that has a series of shoes in it. The drum brake will revolve along the wheel and when the pedal is applied, the shoes are strained against the drum sides and the wheel is slowed.
  • A disc brake has a disc formed metal rotor rotating within a wheel. When force is applied to the pedal a caliper will press the pads against the disc. This will control and slow the wheel as excess force is applied to the brake pedal, making the vehicle to a halt.

Application of Disc Brakes- Disc Brake Parts

1. Disc Brake Pads

The brake pads are the outmost section of the vehicle’s braking system. The brake pads contact and apply friction and pressure to the brake rotors; the discs that slow down, control, and stop the vehicle. The disc brake pads go under tremendous stress each time you slow down and control the speed at which the wheels ultimately stop turning. There are critically two types of pads:

  • Ceramic
  • Semi-Metallic
2. Disc Brake Rotors

It is the heart of your braking system and henceforth made of superior-quality materials. Rotors are commonly made of steel or cast iron, yet some very high-end modern vehicles use a carbon-ceramic rotor. Hyundai Genuine Parts like Brake Rotors can be drilled or slotted for extreme heat dissipation.

3. Disc Brake Calipers

It has a much longer life-time than any other element of the braking system. There are two essential kinds of brake calipers: fixed and floating (or sliding). Fixed calipers put brake pressure lightly and clamp more securely on the rotor; though floating calipers are found on the modern vehicles are perfect for everyday driving. Although the lifespan varies based on several factors, mechanics and manufacturers normally estimate that it can last 3-4 times longer than pads.

4. Sensors

Several vehicles like Mahindra have brakes that comprise sensors embedded in the brake pads which function to notify the driver when the disc brake pads are exhausted. Mahindra Genuine Spare parts like brake sensors play a great part in the ABS system of the vehicles.

Disc Brake Working-Hardware

Aside from these critical key components, the brake principle comprises a few smaller parts. If you are fortunate, your braking trouble stems from one of these tiny guys, which would mean a simple, effortless, rapid, and affordable fix:

  • Abutment Clips
  • Caliper Pin Boots
  • Caliper Pins

Disc Brakes Diagram

The Disc brake system is used on the front wheels of mainly MUVs, entry-level sedans, and hatchback cars; whereas, it is also broadly used on both rear and front wheels of SUVs and others high-end cars in amalgamation with a vacuum or hydraulic brake actuating systems.

Disc brake got its name from the round-shaped disc or rotor or plate; onto which the disc brake sections are mounted. A conventional Disc Brake system comprises a brake calliper, a brake disc, and two crucial friction pads. In the system, the friction pads apply hold on the exterior surface of the disc to manage and control braking. The disc brake comprises:

  • Circular disc made of – steel in motorcycles and cast iron in cars
  • Caliper assembly encompasses hydraulic pistons
  • Bleed screw
  • Pair of brake pads
Signs of problems with Disc Brakes:

A few hard-to-ignore indications with the brakes:

  • Pulsating or Shaking Pedal
  • Squealing Noise
  • Low Brake or Spongy Pedal

Working of Disc Break- Key Principle

Disc brakes are mainly used in cars and motorcycles. The disc brake mechanism is more or less the same in both a car and a bike. So let us understand in the easiest way how disc brakes work:

Step 1 : When the brake pedal is pushed, the high force fluid from the master cylinder pressed the piston outward.

Step 2 : The brake piston move forwards the brake pad against the rotating disc.

Step 3 : As the internal brake pad touches the rotor, the fluid stress exerts further force and the caliper shifts inward and drags the outer pad towards the revolving disc and then it touches the disc.

Step 4 : Now both the when pads pushed the rotating disc, a big amount of friction is released in between the rotating disc and the pads and hold back the vehicle and ultimately let it stop.

Step 4 : When a brake pad is free, the piston moves inward, the pad away from the rotating disc, the car again starts to shift.


  • Much lighter than drum brakes
  • Hold better cooling (as the braking surface is straight exposed to the air)
  • Provide the best resistance power to fade
  • Gives uniform pressure distribution
  • Replacement of brake pads is trouble-free
  • With design disc brakes are self-adjusting


  1. Very expensive than drum brakes
  2. The requirement of Higher pedal pressure to stop the vehicle
  3. No servo action is there
  4. Hard to attach an appropriate parking attachment

Final Verdict

Brakes are very important for safe driving and are arguably the vital safety system in any car. Disc brakes provide reliable, strong and long-term braking performance. Problems with brakes make your vehicle unsafe. An accurately functioning braking system is the distinction between stopping in time and hitting somebody. It is better to strongly get regular brake inspections to keep the whole thing in good working condition.


Leave a Reply

Your email address will not be published. Required fields are marked *