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US 2026/0194048 A1Published application
Roller bearing
AssigneeNtn Corporation
InventorsYuta NISHIDA, Yasuyuki INOUE
Life of this patent
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Abstract
A segment 10 is an injection molded product of a resin material integrally comprising: a plurality of pillar portions 13 arranged spaced apart in a circumferential direction; a pair of arcuate portions 11 and 12 arranged spaced apart in an axial direction and coupled to each other through intermediation of the plurality of pillar portions 13; and claw portions 15 ad 16 provided to the pillar portion 13, and a circumferential angle θ corresponding to a circumferential dimension of the segment 10 is 5° or more and 30° or less.
Claims19
A roller bearing, comprising:
- an inner ring and an outer ring;
- a plurality of rollers interposed between raceway surfaces of the inner ring and the outer ring;
- and
- a cage having an annular shape configured to hold the plurality of rollers spaced apart in a circumferential direction,
- wherein the cage is formed of a plurality of segments arranged in a circumferential direction,
- wherein the segments are each an injection molded product of a resin material integrally comprising:
- a plurality of pillar portions arranged spaced apart in a circumferential direction;
- a pair of arcuate portions arranged spaced apart in an axial direction and coupled to each other through intermediation of the plurality of pillar portions;
- claw portions, which are provided to the pillar portions, and are configured to be in contact with the rollers housed in pockets each formed by two pillar portions that are adjacent to each other and the pair of arcuate portions to restrict motion of the rollers in a radial direction, and
- wherein a circumferential angle θ, which corresponds to a circumferential length, of each of the segments is set to be 5° or more and 30° or less.
7 more elements
A roller bearing, comprising:
- an inner ring and an outer ring;
- a plurality of rollers arranged between the outer ring and the inner ring;
- and
- a plurality of segments, which comprise pockets configured to house the rollers, and are arranged sequentially in a circumferential direction between the outer ring and the inner ring to form a cage,
- wherein the segments have a surface roughness of 6.3 μm or less on two end surfaces of adjacent segments opposed to each other in a circumferential direction, and have a surface roughness of Ra 1.6 μm or less on an inner side of the pocket.
2 more elements
Dependencies are inferred from the claim text.