Ntn Corporation

Hiedeo Shinagawa

Kazunari Yamamoto

Sadaji Katogi

To provide a wheel support bearing assembly in which the frictional resistance can be effectively reduced while effects of minimizing leakage of the filled lubricant and ingress of dust and muddy water from outside of the bearing assembly are secured, the wheel support bearing assembly includes an outer memberan inner memberpositioned inside the outer memberwith an annular working space defined between it and the outer memberand rows of rolling elementsaccommodated within the annular working space and rollingly received in part within outer racewaysin the outer memberand in part within inner racewaysin the inner memberOpposite open ends of the annular working space are sealed by respective sealing membersandwhich are secured to one of the outer and inner membersandEach of those sealing membersanhas a plurality of elastic sealing lipstoortohaving their free ends oriented towards associated sealing surfacesdefined on the other of the outer and inner membersandoranddefined on a sealing contact membersecured to the other of the outer and inner membersandOf those elastic sealing lips, the axially innermost sealing lipsandfunction as a non-contact sealing lip that defines a respective gap of a size &#x3b4;and &#x3b4;sufficient to provide a non-contact sealing effect. The remaining sealing lipsandfunction as a contact sealing lip.

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Iwata, Japan

Hiedeo Shinagawa