Title:
ROLLING BEARING GREASE COMPOSITION AND ROLLING BEARING
Document Type and Number:
WIPO Patent Application WO/2016/063938
Kind Code:
A1
Abstract:
Provided are: a rolling bearing grease composition with which the acoustic service life of a rolling bearing in a high temperature range is improved; and a rolling bearing in which same is enclosed. The rolling bearing grease composition contains a base oil, a prescribed urea thickening agent, and a metal inactivating agent. The aniline point of the base oil is at least 110°C. The urea thickening agent is at least one kind of diurea compound selected from diurea compounds represented by formula (1):
R1-NHCONH-R2-NHCONH-R3 (1)
(in the formula, R1 and R3 can be the same or different from each other and represent C6-30 alkyl groups, C5-8 cycloalkyl groups or C6-10 aryl groups and R2 represents a C6-15 divalent aromatic hydrocarbon group).
Inventors:
YAMAMOTO MASAMICHI (JP)
TANAKA NORIKO (JP)
MATSUBARA KENICHIRO (JP)
TANAKA NORIKO (JP)
MATSUBARA KENICHIRO (JP)
Application Number:
PCT/JP2015/079810
Publication Date:
April 28, 2016
Filing Date:
October 22, 2015
Export Citation:
Assignee:
KYODO YUSHI (JP)
International Classes:
C10M169/06; C10M115/08; C10M133/44; C10M135/36; C10N20/00; C10N20/02; C10N30/00; C10N30/08; C10N40/02; C10N50/10; F16C33/66
Domestic Patent References:
| WO2006078035A1 | 2006-07-27 | |||
| WO2006043566A1 | 2006-04-27 |
Foreign References:
| JP2004149620A | 2004-05-27 | |||
| JP2012236935A | 2012-12-06 | |||
| JPH10204469A | 1998-08-04 | |||
| JP2013217428A | 2013-10-24 |
Other References:
"Evaluating Compatibility Of Greases With Elastomeric Seals", NLGI SPOKESMAN, vol. 42, no. 1, April 1978 (1978-04-01), pages 20 - 29, XP009502397
"Characteristics and applications of polyalphaolefin", JUNKATSU KEIZAI, 1999, pages 6 - 11, XP009502393
"Effects of Lubricating Oil on Automobile Sealant", IDEMITSU GIHO, vol. 42, no. 4, 1999, pages 40 - 47, XP009502405
"Characteristics and applications of polyalphaolefin", JUNKATSU KEIZAI, 1999, pages 6 - 11, XP009502393
"Effects of Lubricating Oil on Automobile Sealant", IDEMITSU GIHO, vol. 42, no. 4, 1999, pages 40 - 47, XP009502405
Attorney, Agent or Firm:
NISHIJIMA Takaki et al. (JP)
Takayoshi Nishijima (JP)
Takayoshi Nishijima (JP)
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