The new line of ‘ModulX’ air disc brakes from Haldex offers 19.5- and 22.5-in. sizes, plus a 17.5-in. model coming soon for medium-duty applications. The brake can easily fit on nearly any tractor or trailer, and is said to provide several advantages: lower weight, better resistance to water and contaminants, and fewer, easier maintenance requirements. While S-cam drum brakes often require a different brake type, size and design for steer, drive, and trailer axles, one ModulX model can be used on all of a vehicle’s axles — the brakes are fully interchangeable from left to right, simplifying inventory demands and making maintenance more manageable.

Other features:

* Lightweight, two-piece caliper accommodates different rotor thicknesses by changing one piece.
* Caliper slides on four stainless-steel slide pins, said to increase overall stability and resistance to corrosion, resulting in greater resistance to vibration, reduced noise and longer service life. Slide-pin replacement doesn’t require opening the caliper housing.
* Self-lubricating Teflon guide bushings in the caliper produce low friction to optimize caliper sliding for smoother, trouble-free operation.
* Pad replacement requires 20% of the time required to change S-cam linings, says Haldex. Both a pad-wear indicator (warning of a worn out pad) and a pad-wear sensor (minimizing pad inspection time and costs) are options.