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US 2019/0301523 A1Published application
Bearing design with combined rolling element material
AssigneeSchaeffler Technologies AG & Co. KG
InventorScott HART
Life of this patent
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Abstract
A bearing assembly, for example a thrust bearing assembly including first and second rings is provided with alternating high and low modulus rolling elements. The low modulus rolling elements have a greater diameter than the high modulus rolling elements so as to initially bear a relatively greater percentage of applied loads.
Claims12
A bearing assembly comprising:
- a first ring with a first raceway and a second ring with a second raceway and a ball track defined between the raceways;
- a plurality of high modulus rolling elements having a first diameter disposed in the ball track;
- and
- a plurality of low modulus rolling elements having a second diameter and disposed in the ball track in an alternating relationship with the high modulus rolling elements, the second diameter being greater than the first diameter,
- wherein a ratio of the first diameter to the second diameter is configured to:
- distribute an externally applied load to both the high modulus rolling elements and the low modulus rolling elements,
- initially distribute more of the externally applied load to the low modulus rolling elements, and
- after usage of the bearing assembly and wear of the low modulus rolling elements, distribute the load more evenly between the high modulus rolling elements and the low modulus rolling elements.
5 more elements
Dependencies are inferred from the claim text.