LIGHTWEIGHT AIR DISC BRAKE

A lightweight package built around its Bendix ADB22X air disc brake product has been introduced by Bendix Spicer Foundation Brake. Peterbilt has added the brake as a databook option on new on-highway truck builds, effective now, the first OEM to do so.

This lightweight air disc brake package features an aluminum hub and splined disc assembly that’s said to reduce total wheel-end weight, reduce rotor dynamic stresses, provide improved thermal balance, and offer longer brake life.

The aluminum splined disc can save as much as 240 lb (total) compared with drum-brake configurations on a typical 6×4 tractor and offers savings of 209 lb (total) compared with other air disc brakes, which use an iron hub and conventional rotor, on the same typical tractor.

The Bendix ADB22X model is built on proven, high-volume technology from the Knorr-Bremse Group, European affiliate for Bendix.

Air disc brakes provide stopping distances comfortably within the range of NHTSA’s proposed 20-30% reduction; virtually eliminate brake fade with no degradation of stopping power; enable a passenger car-like feel; and permit straight, stable stops.

Bendix Spicer Foundation Brake is a wheel-end joint venture between Bendix Commercial Vehicle Systems LLC and Dana Corporation.

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