Cayenne 4 Pot Brake Caliper Orange 380mm For Toyota Fortuner

New Cayenne 4 Pots Brake Caliper Orange 380mm For Toyota Fortuner

Brake caliper is very important to the braking capacity of automobile, and it can be said that it is one of the most important automobile braking components. In any case, most cars today have disc brakes, at least for the front wheels. However, now many cars and trucks also use disc brakes in the rear. In a disc brake system, the wheels of an automobile are fixed to a metal disc or rotor rotating with the wheels. The job of the caliper is to slow down the wheel by friction with the rotor.

The brake caliper is mounted on the rotor like a clamp. Inside each caliper is a pair of metal plates bonded to friction materials - these are called brake pads. The outer brake pad is on the outside of the rotor (facing the outside), and the inner brake pad is on the inside (facing the vehicle). When you step on the brake, hydraulic pressure is generated from the brake fluid from the master cylinder to one or more pistons of the brake caliper, forcing the brake pad against the rotor. The brake pad has a high friction surface, which can slow down the rotor or even stop it completely. When the rotor decelerates or stops, the wheels also decelerate or stop because they are connected to each other.

Old cars and trucks use drum brakes, which slow down the movement of the wheels by friction between the rotating drum and the brake shoes installed in the drum. This friction causes heat and gas to accumulate in the drum, which often leads to the loss of braking capacity, i.e. braking attenuation. Because the brake pads in the disc brake system are outside the disc brake system rather than in the drum, they are easier to ventilate and heat will not accumulate quickly. For this reason, drum brake has been largely replaced by disc brake in modern vehicles; However, some less expensive cars still use drum brakes on the rear wheels, so they don't need much braking power.

1, Working principle of brake caliper:
As the "brake wheel cylinder" in the brake system, the brake caliper mainly receives the hydraulic pressure transmitted by the brake master cylinder through the brake oil pipe, and then applies the hydraulic pressure to the piston inside the caliper. The piston then pushes the brake pad to combine the brake pad with the brake disc, so as to slow down the vehicle through friction, and the vehicle kinetic energy is converted into friction heat energy, which is lost in the atmosphere.

2, Importance of brake calipers:
Because the brake is often used during vehicle driving, the caliper is often subject to the hydraulic pressure transmitted by the brake master cylinder and the reaction force of the brake pad on the caliper. At the same time, the high temperature generated by the friction heat of the brake pad will repeatedly affect the caliper. The ordinary caliper is generally made of cast aluminum alloy, although the high temperature and pressure will not damage the caliper during braking, However, due to the existence of metal fatigue strength, there will be some deformation. The deformed caliper will lead to the decline of its braking performance, which is prone to a series of situations such as braking imbalance. Therefore, if you want to make the calipers more durable, replace them with high-performance modified calipers.

3, Caliper classification
Material classification:
According to different materials, it can be divided into cast aluminum alloy, forged aluminum alloy and titanium alloy;
Cast aluminum alloy: it is a common caliper material with low price and mature process, which can meet daily use, but its performance is general and its quality is heavy, which is generally common in the mass production vehicles of the original factory