| 摘要 |
A radial angular-contact ball bearing comprises two annular raceways with balls 24 placed between them, the centres of which are distributed around a pitch circle of the bearing, the points of contact between the balls and the two raceways being distributed on a contact cone. A cage holds the balls and comprises a plurality of cavities 32 for housing the balls. Each cavity comprises two opposing concave walls 36 A, 36 B forming spherical caps with a radius R, the centres 40 A, 40 B of the two caps being in the same radial plane at a distance from one another along an axis 42 that is tilted in relation to the axis of rotation of the bearing. The oblong shape of the cavities reduces the friction between them and the balls.
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