Bearing unit for wheel
AssigneeNsk Ltd.
InventorHiroaki Ishikawa
Life of this patent
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Abstract
There is disclosed a bearing unit (5, 5a) for a wheel comprising a stationary race (6) having stationary race track surfaces (11a, 11b) on a peripheral surface on the stationary side thereof to be supported and fixed by a suspension system in its used state, a rotating race (8) having rotating race track surfaces (14a, 14b) on a peripheral surface on the rotating side so as to fix a wheel and a braking rotating member in its used state, and a plurality of balls (17) provided between the rotating race tracks and the stationary race tracks, wherein a standard value for the mutual difference in diameter between these balls is not more than 1.0 μm.
Claims2
A bearing unit for a wheel comprising:
- a stationary race having stationary race track surfaces on a peripheral surface on the stationary side thereof to be supported and fixed by a suspension system in its used state;
- a rotating race having rotating race track surfaces on a peripheral surface on the rotating side so as to fix a wheel and a braking rotating member in its used state;
- and
- a plurality of balls provided between said rotating race tracks and said stationary race tracks,
- wherein a standard value for the mutual difference in diameter between these balls is not more than 1.0 μm.
Dependencies are inferred from the claim text.