SKF has developed a new wheel bearing arrangement for Michelin that allows air to be exchanged between a centralized compressor and a car’s four tires. The new system, aimed at enhancing vehicle safety, was extensively tested to make sure it was as durable as conventional hub bearing units. The units also incorporate additional sealing to exclude water and dirt and to retain the grease that lubricates the bearing.
   In an automobile, the wheel bearing arrangement is the interface between the rotating wheel and tire assembly and the suspension system. Integrating a tire pressure management system into the bearing arrangement for Michelin was a novel application.