| 摘要 |
PROBLEM TO BE SOLVED: To make a whole thickness thinner and to increase a load capacity by integrally forming an inner ring and a shaft to a circular plate shape or an annular shape, integrally forming an outer ring and a housing to an annular shape and interposing balls between respective tracks with approximately no gap. SOLUTION: A ball bearing device X has loaded balls and non-loaded balls 4 as a rolling body between an outer ring 1 and an inner ring 2 and between an outer ring track 1a and an inner ring track 2a and a housing H for retaining the outer ring 1 and a shaft S for linking the inner ring 2 are integrally formed respectively. The loaded balls 3 and the non-loaded balls 4 are alternately arranged with approximately no gap without using a retainer and a mutual space of the loaded balls 3 is restricted by the non-loaded balls 4. Thus, since the inner/outer track is formed in a single line, a thickness of a whole device can be outstandingly made thinner. A loading capacity of the bearing can be enhanced by interposing the balls with approximately no gap without using the retainer.
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