Title:
GREASE-FILLED BEARING
Document Type and Number:
WIPO Patent Application WO/2022/059638
Kind Code:
A1
Abstract:
Provided is a grease-filled bearing having excellent fretting wear resistance and sealing properties even when used under conditions of swinging motion associated with acceleration/deceleration as when used in robot joints. This grease-filled bearing 1 comprises: an inner race 2 and an outer race 3, which are bearing races; a plurality of rolling elements 4 interposed between the inner race 2 and the outer race 3; and a grease composition 7 sealed around the rolling elements 4. The bearing rotating direction in said grease-filled bearing 1 oscillates by changing in association with acceleration/deceleration. The grease composition contains a base oil and a thickener and has a worked penetration of 310 or greater. The thickener is a calcium sulfonate complex soap.
Inventors:
WATANABE KOTA (JP)
Application Number:
PCT/JP2021/033500
Publication Date:
March 24, 2022
Filing Date:
September 13, 2021
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
C10M169/02; C10M101/02; C10M115/10; F16C33/66; C10N10/04; C10N50/10
Domestic Patent References:
| WO2012141222A1 | 2012-10-18 | |||
| WO2014077090A1 | 2014-05-22 |
Foreign References:
| JP2015160493A | 2015-09-07 |
Attorney, Agent or Firm:
WAKI Hikaru et al. (JP)
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