Title:
WHEEL BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/024645
Kind Code:
A1
Abstract:
Provided is a wheel bearing device that can further reduce weight while increasing rigidity. A wheel bearing device 1 comprises: an outer ring 2 having a double row of outer raceway surfaces 23, 24; an inner member (hub ring 3 and inner ring 4) having a double row of inner raceway surfaces 33, 41 opposing the double row of outer raceway surfaces 23, 24; and double ball rows 5, 6 accommodated between both raceway surfaces of the inner member and the outer ring 2 in a manner allowing rolling. The pitch diameter b of balls 7 in the ball rows 5, 6, and the pitch a between an outer side ball 7 and an inner side ball 7 in the ball rows 5, 6 satisfy the relationship b/a ≥ 2.0.
Inventors:
KOMORI KAZUO (JP)
BABA TOMOKO (JP)
BABA TOMOKO (JP)
Application Number:
PCT/JP2023/026683
Publication Date:
February 01, 2024
Filing Date:
July 20, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/18; B60B35/02; B60B35/14; F16C33/58; F16C33/78; F16J15/3204
Domestic Patent References:
| WO2018092673A1 | 2018-05-24 |
Foreign References:
| JP2018034735A | 2018-03-08 | |||
| JP2019178773A | 2019-10-17 | |||
| JP2008055984A | 2008-03-13 |
Attorney, Agent or Firm:
YANO INTERNATIONAL PATENT ATTORNEYS OFFICE, P.C. (JP)
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