| 摘要 |
A separator or cage for a row of ball bearings designed to reduce friction on the balls. The pocket surfaces in the separator have recesses in the region of the axial "poles" of the balls which prevents contact between the balls and the separator pocket walls. Over the rest of the separator, the pocket walls are near enough to the balls to define a hydrodynamic lubricating film. Also over the rest of the separator pockets, the interior surfaces of the pockets are shaped to face the respective balls and to define a wedge-shaped slot with the ball for development of a hydrodynamic lubricating film as the balls rotate in either direction around their axes. The separator is comprised of two strips fastened together. Each strip has a complementary C-shaped pocket half depression, and the two strips joined together define the complete pockets that enclose the balls between the axial poles of the balls. Preferably, the separator is formed from sheet metal and the recesses in the pockets are produced by plastic deformation in the pocket walls.
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