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Title:
GREASE COMPOSITION FOR VEHICULAR HUB UNIT BEARING
Document Type and Number:
WIPO Patent Application WO/2023/038149
Kind Code:
A1
Abstract:
Provided is a grease composition for a vehicular hub unit bearing, the grease composition having a mixture consistency of 220-270 and containing, with respect to the total mass of the composition, 0.1-5 mass% of a carboxylic acid-based rust-preventing agent, 0.1-5 mass% of a carboxylate-based rust-preventing agent, and 0.1-3 mass% of a fatty acid amine salt, wherein the base oil is a synthetic hydrocarbon oil having a kinematic viscosity at 40 °C of 25-50 mm2/s, and the thickener is an alicyclic aliphatic diurea compound.

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Inventors:
ISA KAZUKI (JP)
TAKEYAMA YUKI (JP)
IJIMA MASATOSHI (JP)
SUGAWARA SUGURU (JP)
ISHIKAWA HIROAKI (JP)
Application Number:
PCT/JP2022/034199
Publication Date:
March 16, 2023
Filing Date:
September 13, 2022
Export Citation:
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Assignee:
KYODO YUSHI (JP)
NSK LTD (JP)
International Classes:
C10M169/06; C10M115/08; C10M129/10; C10M129/26; C10M137/10; F16C19/18; F16C33/66; C10N30/00; C10N30/06; C10N30/12; C10N40/02; C10N50/10
Domestic Patent References:
WO2008044650A12008-04-17
Foreign References:
JP2004224823A2004-08-12
JP2010024440A2010-02-04
JP2013082882A2013-05-09
JP2015140415A2015-08-03
JP2011178824A2011-09-15
JP2017002306A2017-01-05
Other References:
HIROAKI ISHIKAWA: "Technical trends and tribology of hub unit bearing", JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS, vol. 54, no. 9, 2009, pages 580 - 585
Attorney, Agent or Firm:
TANAKA Shinichiro et al. (JP)
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