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AssigneeSchaeffler Technologies AG & Co. KG
InventorsHeinz Schaefers, Johannes Enders
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A radial roller bearing assembly, in particular for a needle bush (1), which substantially comprises a thin-walled outer ring (4), which can be inserted into a bore (2) or a housing (3), having two ribs (5, 6) directed radially inward, and a needle cage assembly (7) that is held in the outer ring (4) by said ribs (5, 6). According to the invention, the needle cage assembly (7) is formed by a needle cage (8) and a plurality of bearing needles (9) guided therein in the circumferential direction at regular distances, which roll on the inner shell surface (10) of the outer ring (4) and on the outer shell surface (11) of a shaft (12) to be borne or a separate inner ring. Furthermore, at least two seals (15, 16) are arranged axially next to the side surfaces (13, 14) of the needle cage (8) which protect the needle bush (1) from contamination from the outside and from the loss of lubricant. According to the invention, at least one of the seals (15 or 16) is formed as a multi-lip seal, made of an elastomer, consisting of a single ring, which extends over the part of the inner shell surface (10) of the outer ring (4) arranged between the related rib (5 or 6) of the outer ring (4) and the adjacent side surface (13 or 14) of the needle cage (8) and over the inner shell surface (17), the face (18) and the outer shell surface (19) of the rib (5 or 6).
A radial roller bearing assembly, comprising a substantially a thin-walled outer ring which is insertable into a hole of a housing and has two radially inwardly directed rims on axial sides thereof, a needle ring held in the outer ring by said rims formed by a needle cage and a multiplicity of bearing needles guided in the needle cage at uniform spacings in a circumferential direction that roll on an inner circumferential face of the outer ring and on an outer circumferential face of a shaft to be mounted or of a separate inner ring, at least two seals which protect the needle bush against contaminants from outside and loss of lubricant arranged axially next to side faces of the needle cage, at least one of the seals is configured as a multiple-lip seal made from an elastomer and comprises a single ring that extends over that part of the inner circumferential face of the outer ring which is arranged between the associated rim of the outer ring and an adjacent one of the side face of the needle cage and over an inner circumferential face, an end face and an outer circumferential face of the rim.
Dependencies are inferred from the claim text.