GREASE COMPOSITION AND MOTION GUIDING DEVICE LUBRICATED THEREBY

Title:

GREASE COMPOSITION AND MOTION GUIDING DEVICE LUBRICATED THEREBY

Document Type and Number:

WIPO Patent Application WO/2012/141222

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a grease composition with sufficiently low dust emission for use in a clean room or other clean environment and with sufficiently high load bearing capacity for lubricating a motion guiding device that is incorporated into a large-scale clean robot. The present invention solves the problem by providing a clean-environment grease composition that comprises a base oil, a thickener, and an extreme-pressure agent wherein the kinematic viscosity of the base oil is 100 to 300 mm2/s at 40°C, a lithium complex soap is contained therein as the thickener, and the content of the thickener is 10 to 40 mass% of the total composition.

Inventors:

NOGAMI AKIRA (JP)
HAYAMI TERUMOTO (JP)
SAMPEI HIROSHI (JP)
FUJINAMI YUKITOSHI (JP)
TAKANE KOUJI (JP)

Application Number:

PCT/JP2012/059921

Publication Date:

October 18, 2012

Filing Date:

April 11, 2012

Export Citation:

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Assignee:

THK CO LTD (JP)
IDEMITSU KOSAN CO (JP)
NOGAMI AKIRA (JP)
HAYAMI TERUMOTO (JP)
SAMPEI HIROSHI (JP)
FUJINAMI YUKITOSHI (JP)
TAKANE KOUJI (JP)

International Classes:

C10M101/02; C10M169/02; C10M107/02; C10M117/04; C10M135/18; C10M137/10; C10M177/00; F16C29/06; F16C33/66; C10N10/02; C10N10/04; C10N10/12; C10N20/02; C10N30/00; C10N30/06; C10N40/02; C10N50/10; C10N70/00

Domestic Patent References:

WO2010150726A1	2010-12-29
WO2010013398A1	2010-02-04
WO2009034804A1	2009-03-19
WO2009020075A1	2009-02-12

Foreign References:

JP2003055680A	2003-02-26
JPH01170691A	1989-07-05
JPH09255984A	1997-09-30
JPH0586392A	1993-04-06
JP2008143927A	2008-06-26
JPH06330070A	1994-11-29
JPH11166191A	1999-06-22
JP2005272764A	2005-10-06
JP2009256401A	2009-11-05
JPH11245128A	1999-09-14
JP2010084842A	2010-04-15

Other References: