# US 2015/0147015 A1 · Split cage and roller bearing

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- Number: US 2015/0147015 A1
- Document ID: US20150147015A1
- Status: Published application
- Kind: A1
- Application number: 14/542,925
- Filed: 2014-11-17
- Published: 2015-05-28
- Earliest claimed: 2013-11-25
- Assignees: Jtekt Corporation
- Applicants: Jtekt Corporation
- Inventors: Hirotaka YASUDA
- Web page: https://patentgrep.com/patent/US20150147015A1

## CPC

- F16C 33/467: {Details of individual pockets, e.g. shape or roller retaining means}
- F16C 19/364: {with tapered rollers, i.e. rollers having essentially the shape of a truncated cone}
- F16C 33/4605: {Details of interaction of cage and race, e.g. retention or centring}
- F16C 33/4676: {of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers}
- F16C 33/51: formed of unconnected members
- F16C 33/585: {of raceways, e.g. ribs to guide the rollers}
- F16C 33/513: {formed of arcuate segments for carrying one or more rollers}
- F16C 43/083: {by plastic deformation of the cage}
- F16C 2300/02: General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A split cage includes a plurality of cage segments each having a pair of rim portions and a pair of cage bar portions, the cage bar portions and the rim portions defining a single pocket that accommodates a single tapered roller. Turning of each of the cage segments is guided by the tapered roller, the cage segments being arranged in a circular pattern along the circumferential direction of the split cage, in an annular space between inner and outer rings. Each cage segment has projections formed so as to project radially inward from the pocket, and formed at the rim portions. A projecting length of each projection is set to such a length that the projection is brought into contact with an outer peripheral side portion of the inner ring before the cage segment is detached from the tapered roller when the cage segment is displaced to the radially inside.

## Claims

### Claim 1

A split cage comprising a plurality of cage segments, each of the cage segments having a pair of rim portions that face each other at a prescribed distance in an axial direction of the split cage, and a pair of cage bar portions disposed between the rim portions to connect the rim portions to each other, the cage bar portions and the rim portions defining a single pocket that accommodates a single roller, the pocket having an insertion opening through which the roller is inserted into the pocket from one of a radially outside and a radially inside, wherein:
turning of each of the cage segments is guided by the roller, the cage segments being arranged in a circular pattern along a circumferential direction of the split cage, in an annular space between an inner ring and an outer ring;
each of the cage segments has projections formed so as to project toward the other one of the radially outside and the radially inside, the projections being formed at both the rim portions and the cage bar portions, or at the rim portions or the cage bar portions; and
a projecting length of each of the projections is set to such a length that the projections are brought into contact with an outer peripheral side portion of the inner ring or an inner peripheral side portion of the outer ring, which is located on the other one of the radially outside and the radially inside, before the cage segment is detached from the roller when the cage segment is displaced to the other one of the radially outside and the radially inside.

### Claim 2 (depends on 1)

The split cage according to claim 1, wherein:
a pocket-side side face of each of the cage bar portions is a pocket-side face that is allowed to be in sliding contact with an outer peripheral face of the roller; and
the pocket-side face has an inner tilted face that is formed so as to be tilted such that part of the inner tilted face except a radially inner end of the pocket-side face is in contact with the outer peripheral face of the roller, and an outer tilted face that is formed at a position radially outward of the inner tilted face so as to be tilted such that part of the outer tilted face except a radially outer end of the pocket-side face is in contact with the outer peripheral face of the roller.

### Claim 3 (depends on 1)

A roller bearing comprising:
an inner ring;
an outer ring;
a plurality of rollers rollably disposed in an annular space between the inner ring and the outer ring; and
the split cage according to claim 1.

### Claim 4 (depends on 2)

A roller bearing comprising:
an inner ring;
an outer ring;
a plurality of rollers rollably disposed in an annular space between the inner ring and the outer ring; and
the split cage according to claim 2.