| 摘要 |
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.
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