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US 2001/0012419 A1Published application
Weel bearing assembly
AssigneeNtn Corporation
InventorsEiji Tajima, Kazuhiro Azuma, Naoshi Kinpara
Life of this patent
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AssigneeNtn Corporation
InventorsEiji Tajima, Kazuhiro Azuma, Naoshi Kinpara
Estimating the term…
A wheel bearing assembly is provided which needs no mounting of a brake rotor and which is small in the number of parts. By integrally forming a disk rotor for a brake on a wheel-mounting flange of an inner member, and providing raceways opposite double-row raceways of the outer member on separate inner ring members pressed onto a tubular portion of the inner member, it is possible to make it unnecessary to mount a brake rotor to the wheel bearing assembly, reduce the number of parts, and use different materials for the inner member and the inner ring members i.e. an FC-family cast iron, which is superior in seizure resistance, for the inner member, and a tough bearing steel for the inner ring member to achieve both excellent brake function and bearing function.
A wheel bearing assembly comprising an outer member to be mounted to a vehicle body and formed with double-row raceways on the inner periphery thereof, an inner member having at its inner peripheral end a tubular portion to be mounted to an axle side, and formed with double-row raceways opposite to the respective raceways of said outer member, and double-row rolling elements arranged between the respective opposing raceways of said outer member and said inner member, said inner member having a wheel-mounting flange, characterized in that a brake rotor is integrally formed on said wheel-mounting flange.
Dependencies are inferred from the claim text.