Title:
ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2022/080076
Kind Code:
A1
Abstract:
In the present invention, grease to which an ionic liquid is added is enclosed in an annular space 2 formed between an inner ring 11 and an outer ring 21, and hydrogenated nitrile rubber (HNBR) is used as the material of a sealing part 41 of a sealing member 31, to form an electrically conductive high-speed roller bearing 1. Due to this configuration, swelling of the sealing part 41 due to the grease to which the ionic liquid was added is mitigated, and thus, anomalous abrasion and the formation of cracks in a first lip section 47 and a second lip section 48 resulting from high-temperature-and-high-speed rotation are mitigated, thereby mitigating the shortening of the lifespan of the electrically conductive high-speed roller bearing 1.
Inventors:
ASAI YUSUKE (JP)
HANAOKA YOSHIAKI (JP)
HANAOKA YOSHIAKI (JP)
Application Number:
PCT/JP2021/033920
Publication Date:
April 21, 2022
Filing Date:
September 15, 2021
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
F16C19/06; F16C33/58; F16C33/66; F16C33/78
Domestic Patent References:
| WO2017033986A1 | 2017-03-02 |
Foreign References:
| JPH0388018U | 1991-09-09 | |||
| JP2007099826A | 2007-04-19 | |||
| JP2010078140A | 2010-04-08 | |||
| JPS6285723U | 1987-06-01 |
Attorney, Agent or Firm:
HANABUSA PATENT & TRADEMARK OFFICE (JP)
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