TODAY’S PATENT – BEARING DEVICE FOR A WHEEL

Today’s patent was invented issued to NTN corporation and was filed on January 1, 2010, bearing patent no. 306856

A bearing device for a wheel, in which circumferential play is minimized and in which a hub ring and an outer joint member of a constant velocity universal joint can be connected with excellent workability.

The bearing device for the wheel has been evolved from what is called a first generation structure, which singly uses a double row roller bearing, to a second generation which integrally has a vehicle body attaching flange with an outermember, and has been further developed to a third generation in which one inner raceway surface of the double row roller bearing is integrally formed on an outer circumference of a hub wheel integrally having awheel attaching flange, and moreover to a fourth generation in which a const ant velocity universal joint is integrated into a hub wheel, and the other inner raceway surface of the double row roller bearing is integrally formed on an outer circumference of an outer joint member constructing the constant velocity universal joint.