The Bendix ADB22X front and rear air disc brakes is available on select class 8 Kenworth trucks. The company says they feature a mono-block caliper design that’s more compact than two-piece caliper models. It also offers sealing that provides optimal protection from environmental elements, Kenworth says, plus a larger rotor that absorbs more energy, allows better ventilation, and is more robust
overall than past air disc brakes.
“Air disc brakes provide reduced brake wear,” says Mike Dozier, Kenworth chief engineer. “The Bendix air disc brake’s longer life may help eliminate one steer-axle brake reline for many linehaul customers. In addition, drivers have found disc brakes on steer axles improve the feel and control of the vehicle during braking.”
Manufacturers predict more air disc spec’ing as a way to meet new U.S. National Highway Traffic Safety Administration stopping distance requirements for heavy
trucks. NHTSA says that stopping distances for tractors can be reduced by 20 to 30% from current standards.
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