What is the piston in the air brake chamber

The piston of the air brake chamber is one of the vital components in the system, and its design and performance are directly related to the efficiency and reliability of the braking system.

material selection:
Pistons are usually made of high-strength metal alloys, such as aluminum alloys or steel. These materials provide sufficient strength and stiffness to handle the high pressures and temperatures associated with braking.

Diameter and stroke:
The diameter and stroke of the piston are two key parameters in the design. The diameter affects the surface area of the piston, which determines the amount of force exerted by the braking system. The stroke determines the moving distance of the piston, which directly affects the generation of braking force.

Seal groove and sealing ring:
Pistons usually have multiple sealing grooves for installing piston seals. These seals are usually made of wear-resistant rubber or high-temperature durable polymer materials to ensure that the air pressure in the chamber does not leak.
Piston seals must maintain elasticity and sealing properties under high pressure and temperature to ensure the stability and reliability of the braking system.

Surface treatment:
Piston surfaces often receive special treatments, such as hard anodizing or coating, to improve their resistance to corrosion and wear. This is essential to ensure that the piston remains in good working order over extended periods of use.

Guidance structure:
The piston needs to be able to move accurately within the chamber housing, so its bottom is usually designed with a guide structure. These structures help maintain the piston's motion trajectory and prevent it from deviating from the designed trajectory.

Reinforcement ribs and heat dissipation design:
In order to increase the strength and stiffness of the piston, reinforcement ribs are sometimes designed on the piston. In addition, considering that the braking system generates a lot of heat during use, the pistons usually also have some heat dissipation designs to ensure that they can work effectively in high-temperature environments.

Connect the piston rod:
One side of the piston is connected to the piston rod, and the connection between the two must be strong and reliable. Often, this involves special thread designs or other joining techniques.