With a 37-lb weight advantage over the previous model, the Haldex ModulX DB22LT disc brake is now available on Hendrickson axles. The brake slides on four stainless-steel slide pins, said to provide a more compact, stable design than the standard two-pin type. These pins increase corrosion resistance and need no lubrication. Two tappets distribute brake pad clamping force equally to ensure even wear, Haldex says, which should mean longer service life and lower maintenance costs.
The DB22LT is engineered specifically for common heavy-duty applications, outperforming standard S-cam drum brakes in practically every category. Like other air discs, it’s less sensitive to speed and temperature variation common in any extreme grade or demanding brake application, so it provides more consistent performance. There’s also less brake fade and more consistent pedal pressure.
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