A brake chamber converts compressed air pressure into mechanical force to activate a commercial vehicle’s braking system. Service and spring brake chambers are available for different truck, trailer, drum brake and air disc brake applications.

When compressed air enters the service side of a brake chamber, it acts on the diaphragm and moves the pushrod. The pushrod transfers force to the connected foundation brake components, allowing the brake shoes or brake caliper to apply braking force.
In a spring brake chamber, the service section supports normal braking, while the spring section provides parking and emergency braking functions according to the vehicle’s brake system design.
Brake chambers vary by type, size, stroke, pushrod length, mounting configuration and application. Selecting the wrong specification may affect installation, pushrod travel and compatibility with the surrounding brake components.
Buyers should confirm the complete product specification rather than relying only on the chamber’s external appearance or a partial reference number.
GAPASA manufactures service and spring brake chambers for commercial vehicle air brake applications. Available models cover different chamber sizes, strokes, mounting arrangements and truck or trailer requirements.
Our team supports distributors, aftermarket brands and OEM buyers with product identification, reference-number matching and specification confirmation.
GAPASA supplies brake chambers to commercial vehicle parts distributors, importers, aftermarket brands, trailer parts suppliers and OEM buyers requiring standard or customer-specific products.
Buyers can submit an OEM number, drawing, product photo or model list for product matching and quotation.







