Sep. 27, 2020
In the brake system of a car, the brake pads may be the most critical component, and all the braking effects are reflected by the brake pads. So the Brake Pad is such an important part, how do we check whether the brake pad should be replaced? How to choose qualified brake pads?
If you lightly tap the brakes and there is a squeaky sound of iron rubbing, the brake pads must be replaced immediately. Because the limit marks on both sides of the brake pad have directly rubbed the brake disc, it proves that the brake pad has exceeded the limit. In this case, the brake disc should be checked while replacing the brake pads. When this kind of sound occurs, the brake disc is often damaged.
The total thickness of a new brake pad is generally about 1.5cm, when the brake pad brake reaches 0.3mm, it must be replaced. With continuous friction in use, the thickness will gradually become thinner. When the thickness of the brake pads is only about 2/3 of the original thickness when observed by naked eyes. The owner of the vehicle will increase the frequency of self-checks and is ready to replace it at any time.
When the car owner is driving on the road and stepping on the brake, if he feels very strenuous, he always has a soft feeling, and often needs to step on the brake deeper to achieve the previous braking effect, it may be that the brake pads have basically lost friction , Must be replaced at this time, otherwise it will cause a serious accident.
Car owners can also use whether the brake warning light on the dashboard is on as a basis for judging whether to change the brake pads. But it should be noted that some high-end cars will have brake warning lights. And generally speaking, only the front brake pad has the brake alarm line. When the warning light comes on, it is already quite dangerous. This is because some of this warning system directly senses the thickness of the brake pads, and some of them cause the warning light to light up after the brake pads have been completely worn out and the brake fluid has dropped extremely.
Car Brake Pad
The friction coefficient is the most basic parameter of the friction material, which determines the basic brake pad braking torque. The national standard strictly requires Brake Pad Manufacturers to indicate the coefficient of friction on the packaging. The coefficient of friction must be appropriate. Too high will cause wheel lockup, loss of direction control and film burn during braking, while too low a braking distance will be too long.
Brake pads will generate instantaneous high temperature when braking, especially during high-speed driving or emergency braking. At high temperatures, the friction coefficient of the friction plate will decrease, which is called thermal decay. The level of thermal decay determines the safety during high temperature conditions and emergency braking.
Comfort is a direct manifestation of friction performance, including braking sensation, noise, dust, smoke, and odor. With the increase in private cars and the improvement of people's living standards, comfort has become an increasingly important indicator of friction linings under the basic premise of meeting safety.
Service life is a product index that everyone is generally concerned about. Generally, Car Brake Pad can guarantee a service life of 30,000 kilometers. Large particles of graphite and brass used in materials such as Bosch brake pads can also reduce wear on the brake disc.