Bearing cage with oblong cavities and radial angular-contact ball bearing comprising such a cage
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United States of America Patent
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Issued Date -
Nov 13, 2008
app pub date -
Nov 7, 2007
filing date -
Nov 22, 2006
priority date (Note) -
Abandoned
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Abstract
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 36A, 36B forming spherical caps with a radius R, the centres 40A, 40B 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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