A detachable cable connects the wheel hub bearing unit to the braking system. "With traditional designs, the cable and sensor were one-piece systems, making servicing of the cable, sensor or bearing separately a challenge," says Gregg Rasmussen, vice president, SKF Car Business-North America.

To further improve bearing performance and serviceability, SKF applies a corrosion-protective paste to the flange face (the surface between the hub bearing and brake rotor). Rasmussen says the paste minimizes rust and run-out, and improves overall performance. A protective, plated sleeve is inserted between the steel bearing and aluminum knuckle to help prevent galvanic corrosion, which makes servicing the bearing much easier.