Haldex brake system parts at Truckstop Group
Haldex is a major supplier of brake system components for commercial vehicles, with a product range covering spring brake actuators, service brake chambers, automatic slack adjusters, brake lining sets and trailer brake control valves. Haldex spring brakes are widely fitted to European trailers and are among the most commonly replaced brake actuator components in the UK trailer workshop sector.
Haldex spring brake references cover a range of chamber sizes and configurations for disc brake and drum brake trailer axle applications. The 24/30 spring brake is one of the most common sizes for standard trailer drum brake axles. For disc brake axle applications, Haldex supplies spring brakes specific to the axle and caliper type. Automatic slack adjusters are a critical safety component; they maintain correct brake shoe-to-drum clearance as linings wear and must be set up correctly on installation to function properly.
Call our team with your axle type and current brake actuator specification to confirm the correct Haldex part. UK nationwide delivery or same-day collection from our branches.
Frequently asked questions
What sizes of Haldex spring brakes are available?
Haldex spring brakes are available in standard diaphragm sizes including 16/16, 20/20, 24/24 and 24/30, where the two numbers refer to the service chamber and spring chamber diameters respectively. The 24/30 is the most common size for standard trailer drum brake axles. Confirm the chamber size and port configuration from the unit being replaced before ordering.
How do I cage a Haldex spring brake for safe removal?
Haldex spring brakes are supplied with a cage bolt that compresses the internal spring for safe handling. Insert the cage bolt through the designated hole on the end of the spring chamber and tighten until the spring is fully compressed. Never attempt to dismantle a spring brake without caging it first; the internal spring stores a significant amount of energy and can cause serious injury if released uncontrolled.
What is the difference between a Haldex service brake chamber and a spring brake?
A service brake chamber operates only when air pressure is applied via the foot brake. A spring brake (also called a park/emergency chamber) contains an internal spring that applies the brake when air pressure falls below a set threshold, providing park brake and emergency brake function. Combination units contain both a service chamber and a spring chamber in a single housing.
