Title:
ROLLER-BEARING CAGE AND ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2023/048180
Kind Code:
A1
Abstract:
Provided are a roller-bearing cage and a roller bearing whereby even with cages in which raised parts (protuberances) of resin polymer are formed by the welds, it is possible to keep friction increase, torque increase, etc. to a minimum when the bearing is running. A cage 1 is a roller bearing cage that has an annular part 2 and a plurality of pillar parts 3 extending unilaterally in the axial direction from the annular part 2, and that retains rolling elements in the circumferential gaps between the pillar parts 3, wherein: the annular part 2 and the pillar parts 3 are unitarily formed by injection molding; the cage has welds W on at least the annular part 2; axially raised protuberances 5 are formed on the axial-end side of the annular part 2 where the welds W are formed; and where the axial dimension of the protuberances 5 is H and the axial thickness of the annular part 2 in the places where the protuberances 5 are not formed is T, then (H * 100/T) < 6.5 is satisfied.
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Inventors:
MIYAMOTO NAOFUMI (JP)
Application Number:
PCT/JP2022/035159
Publication Date:
March 30, 2023
Filing Date:
September 21, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/49; B29C45/00; F16C19/28; F16C33/41; F16C33/48; F16C33/56
Foreign References:
| JP2011190860A | 2011-09-29 | |||
| JP2006170276A | 2006-06-29 |
Attorney, Agent or Firm:
WAKI Hikaru et al. (JP)
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