Cage for rolling bearing
First Claim
1. A cage for a bearing comprising:
- a holding portion disposed in an annular space between a inner ring and an outer ring that holds a plurality of rolling elements between the inner ring and the outer ring so that the rolling elements rolls,whereinthe holding portion includes a first annular portion and a second annular portion that are disposed respectively at either end of the holding portion in an axial direction of the cage, and a plurality of columns which couples the first annular portion and the second annular portion to each other and which forms a plurality of pockets, in which the rolling elements are accommodated, the plurality of the columns being disposed in a circumferential direction of the holding portion,the plurality of the columns are constituted by a first column portion and a second column portion that are disposed adjacent to each other in the axial direction of the annular holding portion and coupled to each other, andan oil groove is formed in an outer diameter face of at least one of the first column portion and the second column portion, wherein the oil groove is recessed in the outer diameter face, and a base end of the oil groove leads to a corresponding pocket.
1 Assignment
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Accused Products
Abstract
A cage of the invention is equipped with a first annular portion and a second annular portion that are disposed respectively at both ends in an axial direction, and a plurality of columns which couples the first annular portion and the second annular portion to each other, and which forms a plurality of pockets in which rolling elements are accommodated. The cage is composed of a first body portion and a second body portion that are arranged in the axial direction of the bearing and that are coupled to each other via interlocking columns provided on each of the first and second body portions. At least one of the first body portion and the second body portion has an outer diameter face having recessed therein an oil groove whose base end leads to a corresponding pocket.
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Citations
14 Claims
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1. A cage for a bearing comprising:
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a holding portion disposed in an annular space between a inner ring and an outer ring that holds a plurality of rolling elements between the inner ring and the outer ring so that the rolling elements rolls, wherein the holding portion includes a first annular portion and a second annular portion that are disposed respectively at either end of the holding portion in an axial direction of the cage, and a plurality of columns which couples the first annular portion and the second annular portion to each other and which forms a plurality of pockets, in which the rolling elements are accommodated, the plurality of the columns being disposed in a circumferential direction of the holding portion, the plurality of the columns are constituted by a first column portion and a second column portion that are disposed adjacent to each other in the axial direction of the annular holding portion and coupled to each other, and an oil groove is formed in an outer diameter face of at least one of the first column portion and the second column portion, wherein the oil groove is recessed in the outer diameter face, and a base end of the oil groove leads to a corresponding pocket. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A rolling bearing comprising:
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a inner ring; a outer ring; a plurality of rolling elements disposed between the inner ring and the outer ring; and a holding portion disposed in an annular space between the inner ring and the outer ring that holds the plurality of the rolling elements between the inner ring and the outer ring so that the rolling elements rolls, wherein the holding portion includes a first annular portion and a second annular portion that are disposed respectively at either end of the holding portion in an axial direction of the cage, and a plurality of columns that couples the first annular portion and the second annular portion to each other and forms a plurality of pockets in which the rolling elements are accommodated, the plurality of the columns being disposed in a circumferential direction of the holding portion, the plurality of the columns are constituted by a first column portion and a second column portion that are disposed adjacent to each other in the axial direction of the holding portion and coupled to each other, and an oil groove is formed in an outer diameter face of at least one of the first column portion and the second column portion, wherein the oil groove is recessed in the outer diameter face. and a base end of the oil groove leads to the corresponding pocket. - View Dependent Claims (13, 14)
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Specification