Title:
ANGULAR CONTACT BALL BEARING, BEARING UNIT FOR DENTAL AIR TURBINE, AND DENTAL AIR TURBINE HANDPIECE
Document Type and Number:
WIPO Patent Application WO/2023/090131
Kind Code:
A1
Abstract:
An angular contact ball bearing of the present invention comprises: an outer ring, on the inner circumferential surface of which is formed an outer ring raceway surface; an inner ring, on the outer circumferential surface of which is formed an inner ring raceway surface; and a plurality of balls which are disposed between the outer ring raceway surface and the inner ring raceway surface. The plurality of balls include a plurality of large-diameter balls that have contact angles on the outer ring raceway surface and the inner ring raceway surface and a plurality of small-diameter balls that do not have contact angles on the outer ring raceway surface and the inner ring raceway surface and that are smaller in diameter than the large-diameter balls. The plurality of large-diameter balls and the plurality of small-diameter balls are alternately disposed in the circumferential direction, are made of materials of the same type, and differ in color.
Inventors:
OKAZAKI YAMATO (JP)
SUZUKI HIRONORI (JP)
SUZUKI HIRONORI (JP)
Application Number:
PCT/JP2022/040561
Publication Date:
May 25, 2023
Filing Date:
October 28, 2022
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
F16C33/32; A61C1/05; A61C1/08; F16C19/36; F16C33/76
Foreign References:
| JPS4950635U | 1974-05-04 | |||
| JP2011141038A | 2011-07-21 | |||
| JP2019019893A | 2019-02-07 | |||
| JPH01172624A | 1989-07-07 | |||
| JP2018044646A | 2018-03-22 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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