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Air spring brake chambers, commonly found in heavy trucks and commercial vehicles with air brake systems, convert compressed air energy into mechanical energy to apply the brakes. These chambers are generally divided into two types: service brake chambers and spring brake chambers. Here's how each works:

1. Service brake chamber
Operation: The service brake chamber operates when the driver presses the brake pedal. Compressed air flows into the chamber, pressing against a diaphragm. This ball pushes a push rod, which transfers the force to the brake mechanism, applying the brakes.
Function: These chambers are responsible for regular braking while the vehicle is in motion.
2. Spring brake chamber
Construction: A spring brake chamber has two sections: one for service brakes and one for emergency/parking brakes, which contains a large, strong spring.
Parking brake: When the air pressure is released (eg, when the parking brake is engaged), the strong internal spring expands, pushing the push rod to apply the brake.
Emergency Brake: When the air pressure in the system drops, the spring chamber automatically engages the brakes for safety.
Collective efficacy
In a dual-chamber setup, both service and spring brake functions are combined into one unit. When the driver applies the brakes, compressed air operates the service brake chamber. When the parking brake is engaged or in the event of air pressure failure, the spring chamber applies the brake to hold the vehicle in place.

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