# US 11,905,996 B2 · Bearing with at least one segmented ring

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- Number: US 11,905,996 B2
- Document ID: US11905996B2
- Status: Granted
- Kind: B2
- Application number: 17/877,130
- Filed: 2022-07-29
- Published: 2023-02-09
- Granted: 2024-02-20
- Earliest claimed: 2021-08-02
- Assignees: Aktiebolaget Skf
- Applicants: Aktiebolaget SKF
- Inventors: Bruno Capoldi; David Ragot; David Bertrand
- Web page: https://patentgrep.com/patent/US11905996B2

## CPC

- F16C 19/381: {with at least one row for radial load in combination with at least one row for axial load}
- F16C 33/60: divided {or split, e.g. comprising two juxtaposed rings}
- F16C 33/586: {outside the space between the races, e.g. end faces or bore of inner ring}
- F16C 2226/76: with tongue and groove or key and slot
- F16C 2300/14: Large applications, e.g. bearings having an inner diameter exceeding 500 mm
- F16C 2360/31: Wind motors
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A bearing provides an outer ring and an inner ring capable of rotating concentrically relative to one another, at least one of the inner and outer rings being split into a plurality of successive circumferential ring segments. For each pair of facing ends of adjacent successive ring segments of the split-ring, one of the facing ends includes at least one protrusion made in one part with the associated ring segment and protruding into a recess of complementary shape formed onto the other facing end to align the pair of facing ends in radial direction.

## Claims

### Claim 1

A bearing comprising an outer ring and an inner ring capable of rotating concentrically relative to one another, at least one of the inner and outer rings being split into a plurality of successive circumferential ring segments, wherein for each pair of facing ends of adjacent successive ring segments of the split-ring, one of the facing ends comprises at least one protrusion made in one part with the associated ring segment and protruding into a recess of complementary shape formed onto the other facing end to align the pair of facing ends in radial direction,
wherein the at least one protrusion comprises two flat trapezoidal leg faces extending outwardly from the facing end, the two flat trapezoidal leg faces delineating a flat outer face of the at least one protrusion, the flat outer face being parallel to the facing end,
wherein the width of each of the two flat trapezoidal leg faces is shorter than the width of the flat outer face, and
each pair of adjacent successive ring segments of the split-ring is secured together with at least one fixing plate, the fixing plate being disposed inside first and second grooves respectively provided on frontal faces of the ring segments, the fixing plate being set back or flush with at least the face of each of the ring segments from which the first or second groove is formed.

### Claim 2 (depends on 1)

The bearing according to claim 1, wherein the protrusion extends in the circumferential direction from the facing end.

### Claim 3 (depends on 1)

The bearing according to claim 1, wherein an edge radius is provided between each flat trapezoidal leg face of the protrusion and the facing end, and between each flat trapezoidal leg face and the flat outer face, and wherein an edge radius is provided between each flat trapezoidal leg face of the recess and the other facing end, and between each flat trapezoidal leg face and a flat inner bottom of the recess.

### Claim 4 (depends on 1)

The bearing according to claim 1, further compromising at least first and second alignment members extending through the fixing plate, the first alignment member protruding into a recess formed into the thickness of one of the ring segments, and the second alignment member protruding into a recess formed into the thickness of the other of the ring segments.

### Claim 5 (depends on 1)

The bearing according to claim 1, further comprising at least one first fixing screw and at least one second fixing screw extending through the fixing plate, the first fixing screw being engaged inside a threaded hole formed onto one of the ring segments, and the second fixing screw being engaged inside a threaded hole formed onto the other of the ring segments.

### Claim 6 (depends on 5)

The bearing according to claim 5, further comprising at least first and second alignment members extending through the fixing plate, the first alignment member protruding into a recess formed into the thickness of one of the ring segments, and the second alignment member protruding into a recess formed into the thickness of the other of the ring segments, and wherein the first and second alignment members and screw heads of the first and second fixing screws are set back or flush with an outer surface of the fixing plate which is located on the side opposite to the first and second grooves of the ring segments.

### Claim 7 (depends on 1)

The bearing according to claim 1, wherein each pair of adjacent successive ring segments of the split-ring is secured together with an additional fixing plate, the additional fixing plate being disposed inside third and fourth grooves provided on frontal faces of the ring segments opposite to the frontal faces onto which are formed the first and second grooves, the additional fixing plate being set back or flush with at least these frontal faces.