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The Working Principle Of Brake Disc
Jun 08, 2017

The working principle of Brake Disc
Most modern cars are equipped with Brake Disc  on the front wheels, and even some of the four wheels are equipped with Brake Disc . It is a part of a car brake system that really stops the car.
      The most common type of Brake Disc  mounted on modern cars are single-piston floating caliper Brake Disc . In this article, we will learn all the knowledge about this type of Brake Disc .
      Brake Disc  are very similar to brakes on bicycles. The bicycle brake is provided with a caliper for pressing the brake pad onto the wheel. In a disc brake, the brake pad is pressed by a rotor rather than a wheel, and the pressure is transmitted in a hydraulic rather than a cable. The friction between the pad and the disc reduces the speed of the disc.
      The car in motion has a certain kinetic energy, and in order to stop the car, the brake must remove the energy from the car. How does the brake do this? Whenever you park, the brakes will convert kinetic energy into the heat generated by the friction between the pad and the disc. Most car Brake Disc  are ventilated.
Ventilator for Brake Disc
       A set of blades is provided between the sides of the disc of the Brake Disc  with vent holes, and air can be drawn through the disc for cooling.
       Single-piston floating caliper Brake Disc  have automatic centering and automatic adjustment functions. Since the caliper can slide from one end to the other end, the caliper will move to the center position each time the brakes are used. Likewise, since there is no spring to pull the pad away from the disc, the pad always has a slight contact with the rotor (the rubber piston seal and any swings in the rotor actually drag the pad to keep it in a small section distance). This is important because the diameter of the piston in the brake is much larger than the diameter of the piston in the master cylinder. If the brake piston is retracted into the cylinder, it may be necessary to depress the brake pedal several times to draw enough oil into the brake cylinder to engage the brake pad.
       The old car has a double piston or four-piston fixed caliper design. One (or two) pistons on each side of the rotor push the side of the pad. Since the single-piston design is cheaper and more reliable, these two designs are now largely abandoned.
       At all wheels on which the wheels are fitted with Brake Disc , the emergency brake must be activated by a mechanism independent of the main brake when all the main brakes are completely deactivated. Most cars use lines to start emergency brakes.
Brake Disc  with parking brakes
       There are some wheels equipped with four-wheel Brake Disc , in the rear wheel wheel is equipped with a separate drum brakes. The drum brake is only used for emergency braking systems and is only started by cable; it does not have a hydraulic system.
       Some other cars will have a lever for rotating the bolt or starting the cam so as to hold the piston of the disc brake.
       The most common maintenance for the brake is to replace the lining. Typically, the disc brake pad will be provided with a metal sheet called a "wear indicator".
Brake Disc
       When the friction material is worn out, the wear indicator will contact the disc and whistle. This means that you need to replace the new brake pads.
       The caliper also has a check hole so that you can see how much friction material remains on the brake pad
       Sometimes, the brake rotor will be grinding deep scratches. This can happen if the worn brake pad remains on the car for too long. The brake rotor will also deform and lose flatness. If this happens, the brakes may shake or vibrate when you park. Sometimes, these problems can be repaired by re-grinding (also known as machining or machining) the rotor. Grinding away some material from both sides of the rotor, you can restore the smooth, smooth surface.

       It is not necessary to re-polish each time the brake shoe is replaced. Only when the rotor deformation or serious scratches, it needs to re-polished. In fact, unnecessary re-grinding of the rotor will shorten its life. Because this process will worn away the material, the brake rotor will become thinner after each refurbishment. All brake rotors have a permissible minimum thickness specification that requires replacement of the brake rotor after reaching the minimum thickness. This specification is provided in the manual for each vehicle.