# US 2017/0284467 A1 · Rolling Bearing

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- Number: US 2017/0284467 A1
- Document ID: US20170284467A1
- Status: Published application
- Kind: A1
- Application number: 15/464,654
- Filed: 2017-03-21
- Published: 2017-10-05
- Earliest claimed: 2016-04-04
- Assignees: Jtekt Corporation
- Applicants: Jtekt Corporation
- Inventors: Tomohiko JINBO
- Web page: https://patentgrep.com/patent/US20170284467A1

## CPC

- F16C 33/586: {outside the space between the races, e.g. end faces or bore of inner ring}
- F16C 19/06: with a single row or balls
- F16C 35/067: Fixing them in a housing (with interposition of an element F16C35/07)
- F16C 2226/10: Force connections, e.g. clamping
- F16C 2240/42: Groove sizes
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

In a rolling bearing in which one of inner and outer rings is a rotary ring and the other is a stationary ring, a fitting surface of the stationary ring fitted to a mating member is formed in first and second partial peripheral surfaces of a radially outer surface of the stationary ring which faces the mating member. The first partial peripheral surface is formed on one side in the axial direction, and the second partial peripheral surface is formed on the other side in the axial direction with respect to the first partial peripheral surface. An annular groove that restrains creep is formed between the first partial peripheral surface and the second partial peripheral surface. The annular groove has a depth that is large enough not to allow the bottom of the annular groove to contact the mating member when a radial static rated load is applied.

## Claims

### Claim 1

A rolling bearing, comprising:
an inner ring;
an outer ring;
a plurality of rolling elements that are interposed between the inner ring and the outer ring; and
a cage that holds the plurality of rolling elements, wherein
one of the inner ring and the outer ring is a rotary ring and the other is a stationary ring,
a fitting surface of the stationary ring fitted to a mating member is formed in first and second partial peripheral surfaces of a radially outer surface of the stationary ring which faces the mating member, the first partial peripheral surface being formed on one side in an axial direction and the second partial peripheral surface being formed on the other side in the axial direction with respect to the first partial peripheral surface,
an annular groove that restrains creep is formed between the first partial peripheral surface and the second partial peripheral surface, and
the annular groove has a depth that is large enough not to allow a bottom of the annular groove to contact the mating member when a radial static rated load is applied.

### Claim 2 (depends on 1)

The rolling bearing according to claim 1, wherein
the rolling bearing is a rolling bearing that is under an axial preload when in use as an axial load from the one side in the axial direction toward the other side in the axial direction is applied to the stationary ring, and
the annular groove is formed so that a middle of the annular groove is shifted toward the one side in the axial direction from a middle of the rolling bearing.

### Claim 3 (depends on 1)

The rolling bearing according to claim 1, wherein
the stationary ring has a pair of cylindrical outer peripheral surfaces on both sides in the axial direction of the annular groove, and the pair of cylindrical outer peripheral surfaces are linear in the axial direction and have different axial dimensions from each other.

### Claim 4 (depends on 2)

The rolling bearing according to claim 2, wherein
the stationary ring has a pair of cylindrical outer peripheral surfaces on both sides in the axial direction of the annular groove, and the pair of cylindrical outer peripheral surfaces are linear in the axial direction and have different axial dimensions from each other.