Patent ID: 7488046

Claim:
A hub-bearing assembly for the wheel of a vehicle of the kind equipped with a system for supplying pressurized air to the tires, the assembly comprising: a hub-bearing unit having a rotatable radially outer race fixable to a wheel, a stationary radially inner hub defining at least one passage for pressurized air coming from a source of pressurized air mounted onboard the vehicle; a cover of substantially cylindrical shape secured to the rotatable radially outer race on an axially outer side of the unit and defining with the unit an airtight chamber communicating with the passage, the cover having a through bore for establishing an air communication between the chamber and at least one channel for conveying pressurized air to the tire, and an outer, axial cylindrical wall having a cylindrical portion axially protruding beyond the hub-bearing unit so as to provide a cylindrical surface for centering the wheel of the vehicle.