Title:
GREASE COMPOSITION AND ROLLING BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2021/070887
Kind Code:
A1
Abstract:
Provided are: a grease composition having low torque and providing excellent bearing life even under light load conditions or low speed rotation conditions; and a rolling ball bearing in which the grease composition is enclosed. The grease composition 7 is a grease composition which: is enclosed in a rolling ball bearing used in a rotation speed range of 2000 min-1 or less and having an axial load and a radial load of 5 kgf or less; contains a base oil, a thickener, and additives; and has a yield stress of at least 3000 Pa at 25°C as measured by a dynamic viscoelasticity measurement method using a rheometer.
Inventors:
KAWAMURA TAKAYUKI (JP)
KONDOU RYOUTA (JP)
KONDOU RYOUTA (JP)
Application Number:
PCT/JP2020/038084
Publication Date:
April 15, 2021
Filing Date:
October 08, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
C10M171/00; C10M101/02; C10M115/08; C10N10/04; C10N20/02; C10N30/00; C10N40/02; C10N50/10
Domestic Patent References:
| WO2014088006A1 | 2014-06-12 |
Foreign References:
| JP2017172714A | 2017-09-28 | |||
| JP2013023644A | 2013-02-04 |
Attorney, Agent or Firm:
WAKI Hikaru et al. (JP)
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