| 摘要 |
PURPOSE:To enable a belt like movement in a bearing by making a cylindrical retainer adapt itself to the circulating passage of a rolling element thanks to flexibility due to the thin wall of said retainer. CONSTITUTION:A retainer 1 is formed in a thin walled cylindrical shape, and a hole 1' for setting a rolling element, formed on the retainer 1 is formed in a square or rectangular shape so as to keep a slight gap toward a roller in accordance with the shape of the outer peripheral face of the roller, keeping a slight gap between the roller and the range corresponding to the periphery of the hole 1', or over the whole periphery corresponding to the periphery of the roller and both the end faces in the axial direction. Accordingly, when the bearing is operated, the retainer adapts itself, together with the rolling element, to an oval passage in the bearing, securing flexibility necessary for repeating a belt like direct movement and rotation during operation.
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