# US 4,391,476 A · Roller bearing

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,391,476 A
- Document ID: US4391476A
- Status: Granted
- Kind: A
- Application number: 06/174,641
- Filed: 1980-08-01
- Granted: 1983-07-05
- Earliest claimed: 1979-08-09
- Assignees: SKF Kugellagerfabriken GmbH
- Inventors: Richard Negele; Dieter Pfeifle
- Web page: https://patentgrep.com/patent/US4391476A

## CPC

- F16C 33/605: {with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage}
- F16C 19/26: with a single row of rollers
- F16C 19/49: Bearings with both balls and rollers
- F16C 33/4605: {Details of interaction of cage and race, e.g. retention or centring}
- F16C 33/4623: {formed as one-piece cages, i.e. monoblock cages}
- F16C 33/7843: {with a single annular sealing disc}
- F16C 2300/02: General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
- Y10S 384/903: Retaining ring
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A rolling bearing having rolling means guided in a cage between inner and outer bearing rings, and including a groove on one side of one bearing ring accommodating a radial projection of the cage and another groove on the other side of the bearing ring having inserted therein a separately formed restraining element for axially fixing the cage with respect to that bearing ring.

## Claims

### Claim 1

In a rolling bearing with rolling means guided in a cage between inner and outer bearing rings, wherein the cage has a radially extending annular projection on a lateral ring, the projection extending into a first annular groove of one of the bearing rings for restraining the cage in one axial direction, the improvement comprising a second annular groove on the side of said one bearing ring opposite to said first annular groove, said first groove receiving said radial projection of said cage, and a separately formed restraining element inserted in said groove, said restraining ring being positioned to axially restrain said cage with respect to said one of said bearing rings in the axial direction opposite said one axial direction, said one bearing ring having a partial conical shape over which said projection may be pushed to enable insertion of said cage therein to facilitate assembly of said cage in said one bearing ring.

### Claim 2 (depends on 1)

The rolling bearing of claim 1, wherein the side of said bearing ring opposite the side thereof having said first annular groove includes a section which widens or narrows conically as a section of the bearing raceway towards the respective axial end of said bearing.

### Claim 3 (depends on 1, 2)

The bearing of claims 1 or 2, wherein said first annular groove has a groove edge with a diameter which, if said first annular groove is arranged in the outer ring, is smaller, and if said first annular groove is arranged in the inner ring, is larger, than the respective raceway width.

### Claim 4

In a bearing having both roller element set and ball element set rolling means, said roller element set and ball element set rolling means being guided by separate first and second cages respectively between inner and outer bearing rings, wherein the first cage is provided with a radially protruding annular projection on a lateral ring thereof, which projection extends into a first annular groove on one of the bearing rings for fixing the first cage in one axial direction, the improvement comprising a second annular groove on the side of said one bearing ring opposite to the side thereof having said first annular groove, said first groove receiving said radial projection of said cage, a separately formed restraining ring inserted in said second groove and positioned to restrain said first cage with respect to said one of said bearing rings in the axial direction opposite said one direction, and a third groove in said one bearing ring receiving said ball element set.

### Claim 5

In a rolling bearing having a row of rolling elements guided in a cage to roll between inner and outer bearing rings, a first annular groove in one of said bearing rings, and an annular radially extending projection on one axial end of said cage and extending into said first annular groove for limiting the axial movement of said cage with respect to said one bearing ring in one axial direction; the improvement comprising a second annular groove in said one bearing ring adjacent the other axial end of said cage, and a separately formed restraining element mounted in said second groove and positioned to limit the movement of said cage with respect to said one bearing ring in the axial direction opposite said one axial direction, said one bearing ring being an outer bearing ring, the inner diameter of said one bearing ring between said second annular groove and the adjacent axial end thereof being greater than the outer diameter of said annular projection, the bore of said one bearing ring between said first and second annular grooves defining a race for said rolling elements, said outer bearing ring further having a conically tapered portion extending radially inwardly from said second annular groove toward the bearing race portion thereof, the larger diameter end of said conical portion having a diameter greater than outer diameter of said annular projection.