TEL: +86-632-6880966

How Air Disc Brakes Works?

Apr,09,2022 << Return list

How Air Disc Brakes Work?

Air brakes work using compressed air instead of hydraulic fluid. Air brakes can be either drum brakes or disc brakes, or a combination of both.

Air is pressurized by an engine-mounted compressor. The air compressor then pumps the air into the air storage tanks, which store the compressed air until it’s needed.

n62.jpg

Air pressure is used to apply the service brakes and release the parking brake. There are multiple air circuits in the system. The parking brake engages by spring force in the parking brake portion of the spring brake chamber when the air pressure in the chamber is released.

This also allows the parking brake to be used as the emergency brake system. If air pressure was to drop too low, the force exerted by the spring in the chamber will be able to overcome the force exerted by the air on the diaphragm and apply the brakes on all wheels.

You might think of air brakes as working similarly to a hydraulic brake circuit. As with hydraulic brakes, when the driver presses the brake pedal, air pressure is applied, like hydraulic pressure in a hydraulic brake circuit to the wheel when applying the brake.

How Air Disc Brake Works?

For disc brake operation, the process is slightly different.

  1. The operator depresses the brake pedal, actuating the air braking system.

  2. The air from the reservoirs is supplied to the brake valves.

  3. The air from the valves is delivered to the brake chambers.

  4. The chamber actuates the caliper, which transfers force to the inner brake pad.

  5. The caliper slides on the guide pins as the inner brake pad contacts the brake rotor.

  6. A bridge moves with the caliper to move the outer pad against the rotor.

  7. The pads squeeze against the rotor, transferring force to stop the wheel.

  8. The operator releases the brake pedal.

  9. The return spring forces the caliper/bridge back to its rest position.

  10. The brake pads separate from the brake disc.

  11. The brakes are released.

Leave words, your message replied in 24hours.

Toget Brake

Brand Vision:"to become the China leading supplier of active vehicle safety systems within the commercial vehicle industry."

At Toget, focus on air disc brake calipers technics, exceeding industry standards is a strict requirement.

apply for air disc brake caliper drawings


Brand names, original numbers, vehicle mark and models are only for reference purposes.