Title:
LUBRICANT COMPOSITION FOR FLUID DYNAMIC BEARING
Document Type and Number:
WIPO Patent Application WO/2006/025253
Kind Code:
A1
Abstract:
Disclosed is a lubricant composition for fluid dynamic bearings which contains, as a base oil, 50-100% by mass of an ether compound having at least one ether bond and 11-34 carbon atoms, and has a kinematic viscosity at 100&ring C of not less than 2.2 mm2/s. Such a lubricant composition for fluid dynamic bearings has good low-temperature fluidity and such excellent viscosity characteristics that viscosity decrease is small even in the high temperature range. The lubricant composition further has low evaporativity, energy saving properties and heat resistance stability, and is thus suitable for compact fluid dynamic bearings which are rotated at high speed.
Inventors:
OKADA TAHEI (JP)
Application Number:
PCT/JP2005/015425
Publication Date:
March 09, 2006
Filing Date:
August 25, 2005
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
OKADA TAHEI (JP)
OKADA TAHEI (JP)
International Classes:
C10M105/18; C10M169/04; C10M129/10; C10M133/04; C10N20/00; C10N20/02; C10N30/00; C10N30/02; C10N30/06; C10N30/08; C10N40/02
Domestic Patent References:
| WO2004058928A1 | 2004-07-15 | |||
| WO2004090082A1 | 2004-10-21 |
Foreign References:
| JP2002348586A | 2002-12-04 | |||
| JP2005232434A | 2005-09-02 |
Attorney, Agent or Firm:
Ohtani, Tamotsu (6F. 25-2, Toranomon 3-chome, Minato-k, Tokyo 01, JP)
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