What is the function of car calipers

Brake calipers are brakes that hold the brake pads to achieve the braking effect after the car has stepped on the brakes. The more pistons in a car caliper, the stronger, more stable and smoother the braking force is. The caliper mainly uses the piston to let the brake pad clamp the brake disc. Most ordinary cars use single piston, and sports car/performance car will be upgraded to double piston to provide better braking performance. More than 4 pistons are usually called "abalone", which is more typical Examples are the Evolution and WRX STI lineup. The main internal components of the caliper can be divided into piston (Piston), piston oil spacer (Piston Seal) and dust spacer (Piston Boot), as for other too detailed Ray editors will not mention. When working, the piston and the caliper will rub against each other. When the plastic part (seal) reaches its life cycle, there will be a problem of hardening/insufficient sealing, and if impurities are mixed into the interior, rust will occur, which will make the piston in the long run. It does not work properly, and finally there is a blocking problem.

Once the piston is blocked, it means that it cannot operate normally, which will reduce the braking efficiency. Second, because the piston cannot complete the telescopic action, the piston will be stuck and the brake pad will not be able to Brake adjuster return, and the brake will be forced to rub against the brake disc all the time (it is not excluded that there is this Possibility), in the long run, it will cause uneven running-in of brake discs and brake pads, and the cost of changing discs and brake pads is not cheap, so next time you might as well call a car mechanic to check whether the pistons are working properly.

It is usually repaired every 60,000 kilometers, but because few car owners will request to repair the calipers, so the general car factory rarely provides this kind of service, mainly because it is more labor-intensive and troublesome. The process is probably: dismantling the caliper, dismantling the piston, cleaning, grinding the rusted part of the piston, replacing the piston seal and other oil separators, reinstalling the caliper and piston, and finally removing the excess air inside the brake , you can also change the brake fluid (Brake Fluid) by the way.

Car calipers are calipers with functions such as decelerating, stopping or keeping the moving wheels in a stopped state, and are generally only used in disc brake systems. It is the protruding part of the outer side of the brake pad that can enhance the braking performance. Generally speaking, car calipers have three colors, namely red, yellow, and gray. The yellow brake calipers are applied to the ceramic brakes, which are the default brakes on Porsche GT3 models, and are usually used in cars with superior dynamic performance. Red brake calipers are used for high-performance brakes. Gray is used on high-performance sedans and regular models. Like the gray brake calipers on regular Mercedes-Benz models, the "Mercedes-Benz" logo will be printed on them.