Title:
GREASE COMPOSITION, ROLLING BEARING, AND LUBRICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/058106
Kind Code:
A1
Abstract:
Provided are: a grease composition that achieves low noise together with high-temperature, high-speed durability; and a rolling bearing in which the grease composition is encapsulated. The grease composition 7 contains a base oil, a thickener, and an additive. The base oil is a mixed oil of a synthetic hydrocarbon oil and an ester oil. The thickener is an aliphatic diurea compound. The initial acid value of the grease composition is 2.0 mg KOH/g or more. The additive contains the elements sulfur (S), phosphorus (P), and zinc (Zn), and the total amount of these elements contained in the grease composition 7 is 0.50 mass% or more relative to the total amount of the grease composition.
Inventors:
KAWAMURA TAKAYUKI (JP)
Application Number:
PCT/JP2023/033004
Publication Date:
March 21, 2024
Filing Date:
September 11, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
C10M169/02; F16C19/06; F16C33/66; C10M105/32; C10M107/02; C10M115/08; C10N10/04; C10N30/00; C10N30/10; C10N40/00; C10N40/02; C10N50/10
Domestic Patent References:
| WO2004018594A1 | 2004-03-04 |
Foreign References:
| JP2015229704A | 2015-12-21 | |||
| JP2008308617A | 2008-12-25 | |||
| JP2003105366A | 2003-04-09 |
Attorney, Agent or Firm:
WAKI Hikaru et al. (JP)
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