Guangzhou Yuanxing Industrial Co., Ltd. |
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Rear Enlarged Disc Car Brake Part 355*22mm Bell Bracket For Audi Rs3
About Products
Brake Rotor Size | 355mm |
Brake Rotor Thickness | 22mm |
Disc Rotor Design | Drilled Slot |
Center Cap type | Black Normal Center Bell |
For Car Model | Audi rs3 |
Rotor Weight | 15kg |
brake disc
The brake disc is definitely used for braking, and its braking
force comes from the brake caliper. Generally speaking, the general
brake caliper is the part where the inner brake piston pump is
fixed, and the outer side is a caliper-type structure. The inner
brake pad is fixed on the piston pump, and the outer brake pad is
fixed on the outside of the caliper. The piston pushes the inner
brake pad through the pressure from the brake oil pipe, and at the
same time pulls the caliper through the reaction force, making the
outer brake pad inward. Both of them press on the brake disc at the
same time, and the braking force is generated by the friction
between the brake disc and the inner and outer brake pads. In this
process, the piston is driven by brake fluid, which is hydraulic
oil. This is engine assisted.
For the hand brake, it is to use the cable through a lever
structure mechanism to forcefully pull the brake pads, so that they
are pressed against the brake disc, thereby generating the braking
force.
The brakes have disc brakes, drum brakes and air brakes. Many older
cars have front disc brakes and rear drums. Many cars have disc
brakes front and rear. Because the heat dissipation of the disc
brake is better than that of the drum brake, in the high-speed
braking state, it is not easy to produce thermal recession, so its
high-speed braking effect is good. But at low speed, the braking
effect is not as good as that of drum brakes. The price is more
expensive than the drum brake. Therefore, many middle and high-end
cars use full disc brakes, while ordinary cars use front discs and
rear drums, while relatively low-speed trucks and buses that
require high braking force still use drum brakes.
The drum brake is sealed and shaped like a drum. There are also
many called brake pots in China. It turns when driving. There are
two arc or semicircle brake shoes fixed inside the drum brake. When
you step on the brakes, the two brake shoes spread out under the
action of the brake wheel cylinder, supporting the brake shoes to
rub against the inner wall of the brake drum to slow down or stop.
Material requirements
The material of the brake disc adopts my country's gray cast iron
250 standard, referred to as HT250, which is equivalent to the
American G3000 standard. The requirements for the three main
elements of the chemical composition are: C: 3.1∽3.4 Si: 1.9∽2.3
Mn: 0.6∽0.9. Mechanical performance requirements: tensile
strength>=206MPa, flexural strength>=1000MPa,
deflection>=5.1mm, hardness requirements: between
187∽241HBS.
advantage
1. The heat dissipation of disc brakes is better than that of drum
brakes, and it is less likely to cause brake recession and brake
failure when stepping on the brakes continuously.
2. The size change of the brake disc after heating does not
increase the stroke of the brake pedal.
3. The disc brake system has a quick response and can perform
high-frequency braking actions, so it is more in line with the
needs of the ABS system.
4. The disc brake does not have the automatic braking effect of the
drum brake, so the braking force of the left and right wheels is
relatively average.
5. Due to the better drainage of the brake disc, it can reduce the
situation of poor brakes caused by water or sediment.
6. Compared with drum brakes, disc brakes have a simple structure
and are easy to maintain.