Title:
SELF-ALIGNING ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2020/203393
Kind Code:
A1
Abstract:
A self-aligning roller bearing that is to support a main shaft of a wind power generation device. The self-aligning roller bearing comprises an inner ring (2), an outer ring (3), two rows of rollers (4, 5), and cages (10L, 10R). The rollers (4, 5) have a multilayered DLC coating film (9) at the outer circumferential surfaces thereof. The film thickness of the DLC coating film (9) is at least 2.0 μm. The surface roughness of the outer circumferential surface of a base material of the rollers (4, 5) satisfies Ra≤0.3 and RΔq≤0.05. The film hardness of the layers of the multilayered DLC coating film (9) increases from one layer to the next from inside to outside.
Inventors:
SEKO KAZUMASA (JP)
NAKANISHI MASAKI (JP)
YAMAMOTO TAKASHI (JP)
NAKANISHI MASAKI (JP)
YAMAMOTO TAKASHI (JP)
Application Number:
PCT/JP2020/012628
Publication Date:
October 08, 2020
Filing Date:
March 23, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/38; F03D80/70; F16C23/08; F16C33/34; F16C33/49
Domestic Patent References:
| WO2017047506A1 | 2017-03-23 |
Foreign References:
| JP2018115761A | 2018-07-26 | |||
| JP2010112527A | 2010-05-20 | |||
| JP2011174538A | 2011-09-08 | |||
| JP2018115762A | 2018-07-26 | |||
| JP2017180832A | 2017-10-05 |
Other References:
See also references of EP 3951197A4
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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