date
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15.07.2014

Product Portrait

Spring brake cylinders for trucks, trailers and buses

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Guaranteed quality has made the brand
DT Spare Parts the leading brand in the international Independent Aftermarket for commercial vehicles.
The complete range contains all required spare parts for trucks, trailers and buses, including all standard spring brake cylinders.

The DT brand products, made of high quality materials, meet your highest quality requirements and guarantee a long period of use.

In the case of pneumatic brakes, spring brake cylinders convert the energy of compressed air into mechanical force and motion.

They are a combination of diaphragm brake cylinders and a springbrake chamber and are primarily installed on the rear axle.

During braking, the compressed air presses against the diaphragm in the brake cylinder, so that the push rod is moved forward by the piston. Hereby, the diaphragm brake cylinder acts as a service brake. When the pressure in the diaphragm brake cylinder is reduced,
the diaphragm and the push rod are pushed back by a spring into the initial position.

DT-Technic Info

Due to the spring-brake chamber, spring brake cylinders also serve as parking or auxiliary brakes. In the case of a pressure drop in the pressure reservoir the parking brake is mechanically actuated by means of a strong spring. The release of the parking brake takes place by re-application of compressed air, whereby the spring is pushed back into the driving mode. If a spring brake cylinder is gradually vented using the hand-brake valve, it can also fulfil the function of an auxiliary brake.

Spring brake cylinders of the DT Spare Parts brand undergo extensive quality controls to ensure perfect functioning. These include visual inspection, inspection of the surfaces, performance tests, as well as dimension and leakage tests. Furthermore, corrosion tests are carried out on the salt-water test stand, as well as vibration and climate chamber tests. In long-term tests, the durability of the spring-brake chamber is tested for at least 300 000 cycles and the durability of the diaphragm brake cylinder for at least 1 000 000 cycles.

Brake cylinders of the DT Spare Parts brand are manufactured in accordance with DIN standards and undergo various stages of production during the manufacturing process. A special aluminium housing, as well as a zinc-nickel coating, ensure optimum corrosion protection and a long and safe service life.

When replacing the spring brake cylinder, the contact surfaces must be undamaged and clean.

The connection and fixing screw threads are to be tightened to the torque provided by the vehicle manufacturer. In addition, a cleansing of the compressed air system must be carried out.

In addition to spring brake cylinders,
DT Spare Parts offers all standard brake cylinders, diaphragms and repair kits.

Construction of spring brake cylinders

  1. Diaphragm brake cylinder
  2. Spring-brake chamber
  3. Diaphragm
  4. Push rod
  5. High pressure spring
  6. Pressure spring
  7. Cylinder push rod
  8. Piston

 

 

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