Title:
OIL-IMPREGNATED SINTERED BEARING AND FLUID DYNAMIC BEARING DEVICE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2023/189389
Kind Code:
A1
Abstract:
A radial dynamic pressure generation unit 11 is formed on an inner circumferential surface 8a of an oil-impregnated sintered bearing 8. The radial dynamic pressure generation unit 11 includes a plurality of inclined dynamic pressure grooves 11a inclined with respect to the circumferential direction of the inner circumferential surface 8a, and a plurality of ridges 11b provided between the inclined dynamic pressure grooves 11a. The ridge 11b includes a diameter reduction portion 13 where the inner diameter dimension of the ridge 11b decreases in the direction from the axial center side toward the axial end side of the inner circumferential surface 8a.
More Like This:
Inventors:
YAMAGOU MASASHI (JP)
Application Number:
PCT/JP2023/009160
Publication Date:
October 05, 2023
Filing Date:
March 09, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C17/02; F16C33/12; F16C33/74
Domestic Patent References:
| WO2018037822A1 | 2018-03-01 |
Foreign References:
| JP2006105237A | 2006-04-20 | |||
| JP2000155284A | 2000-06-06 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Download PDF: