# US 11,078,959 B1 · High speed bearing with single piece wide plastic cage

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- Number: US 11,078,959 B1
- Document ID: US11078959B1
- Status: Granted
- Kind: B1
- Application number: 16/897,796
- Filed: 2020-06-10
- Granted: 2021-08-03
- Earliest claimed: 2020-06-10
- Assignees: Schaeffler Technologies AG & Co. KG
- Applicants: Schaeffler Technologies AG & Co. KG
- Inventors: Guihui Zhong
- Web page: https://patentgrep.com/patent/US11078959B1

## CPC

- F16C 33/416: {made from plastic, e.g. injection moulded comb cages}
- F16C 15/00: Construction of rotary bodies to resist centrifugal force (flywheels, correction weights F16F15/30, F16F15/32)
- F16C 19/16: with a single row of balls
- F16C 33/3856: {made from plastic, e.g. injection moulded window cages}
- F16C 33/44: Selection of substances (F16C33/40, F16C33/41 take precedence)
- F16C 19/06: with a single row or balls
- F16C 2380/26: Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A ball bearing is adapted to high-speed applications. The single-piece plastic cage has a wide flange portion. In particular, the mass of the flange portion is at least 40% of the total mass of the cage.

## Claims

### Claim 1

A bearing cage comprising:
an annular flange portion having a flange mass; and
a plurality of wings extending axially from the flange portion to define a plurality of roller pockets; wherein
the flange mass is greater than 40% of a total mass of the bearing cage.

### Claim 2 (depends on 1)

The bearing cage of claim 1 wherein the roller pockets are shaped to accommodate balls.

### Claim 3 (depends on 1)

The bearing cage of claim 1 wherein the wings define mass reduction cutouts.

### Claim 4 (depends on 3)

The bearing cage of claim 3 wherein the mass reduction cutouts are indentations from an outer surface.

### Claim 5 (depends on 3)

The bearing cage of claim 3 wherein the mass reduction cutouts are indentations from an inner surface.

### Claim 6 (depends on 3)

The bearing of claim 3 wherein the mass reduction cutouts do not extend into the flange portion.

### Claim 7 (depends on 1)

The bearing cage of claim 1 wherein the cage is plastic.

### Claim 8

A bearing comprising:
a bearing cage having an annular flange portion and a plurality of wings extending axially from the flange portion to define a plurality of roller pockets wherein a mass of the flange portion exceeds 40% of a total mass of the bearing cage;
an outer ring having a radially inward facing outer race;
an inner ring having a radially outward facing inner race; and
a plurality of rollers each retained in one of the roller pockets and in rolling contact with the inner race and the outer race.

### Claim 9 (depends on 8)

The bearing of claim 8 wherein the rollers are balls.

### Claim 10 (depends on 8)

The bearing of claim 8 wherein the wings of the bearing cage define mass reduction cutouts.

### Claim 11 (depends on 10)

The bearing of claim 10 wherein the mass reduction cutouts are indentations from an outer surface.

### Claim 12 (depends on 10)

The bearing of claim 10 wherein the mass reduction cutouts are indentations from an inner surface.

### Claim 13 (depends on 10)

The bearing of claim 10 wherein the mass reduction cutouts do not extend into the flange portion.

### Claim 14 (depends on 8)

The bearing of claim 8 wherein the cage is plastic.