Radial needle bearing unit
AssigneeSchaeffler KG
InventorsGeorg Draser, Martin Gegner, Juergen Weiss
Life of this patent
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Abstract
A radial needle bearing unit for supporting a shaft, which has an outer sleeve with at least one radially inwardly directed rim and a cage guiding hearing needles. For sealing purposes, a sealing element is disposed in an annular space delimited by the rim and the cage. The sealing element is an outwardly expanding sealing ring made of a polymer material resting radially outwardly against the inner lateral surface of the outer sleeve and radially inwardly against the lateral surface of the shaft so that a radial/radial seal is formed. The outer sleeve has, at least in one peripheral location, a holding lug which is formed by stamping or cutting and protrudes the lateral surface of the outer sleeve in a spring-loaded manner.
Claims7
A radial needle bearing unit for mounting a shaft, comprising;
- an outer sleeve having at least one radially inwardly directed rim;
- a cage guiding bearing needles;
- a sealing element being arranged for sealing purposes in an annular space which is delimited by the rim and the cage,
- wherein the sealing element is configured as an outwardly expanding sealing ring made from a polymeric material which comes into contact radially on an outside with an inner circumferential face of the outer sleeve and radially on an inside with a circumferential face of a shaft forming a radial/radial seal, the outer sleeve having, at least at one circumferential point, a holding lug which is formed by punching or cutting and protrudes resiliently beyond the inner circumferential face of the outer sleeve.
Dependencies are inferred from the claim text.