Title:
GREASE COMPOSITION, AND ROLLER BEARING AND UNIVERSAL JOINT PACKED WITH SAID GREASE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2010/027019
Kind Code:
A1
Abstract:
Disclosed is a grease composition that can be used for a long period of time in a wide temperature range from low temperatures to high temperatures, using a relatively inexpensive base oil. Also disclosed are a roller bearing and universal joint that are packed with the grease composition. The grease composition is one in which additives are mixed into a base grease consisting of a base oil and a thickener, wherein the aforementioned base oil contains at least 50% by weight highly refined oil with a viscosity index of 120 to 180, and the aforementioned additives include at least 0.2 to 6 parts by weight poly(meth)acrylate with a dynamic viscosity of at least 100 mm2/s and less than 850 mm2/s at 100ºC, to 100 parts by weight base grease, and ZnDTP. A roller bearing (1) is packed with this grease composition (7) on the outer circumference of a rolling body (4).
More Like This:
Inventors:
KAWAMURA TAKAYUKI
Application Number:
PCT/JP2009/065417
Publication Date:
March 11, 2010
Filing Date:
September 03, 2009
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
KAWAMURA TAKAYUKI
KAWAMURA TAKAYUKI
International Classes:
C10M169/00; F16C19/18; F16C19/28; F16C33/66; F16D3/20; C10M101/02; C10M115/08; C10M117/00; C10M135/18; C10M137/04; C10M137/10; C10M139/00; C10M145/14; C10N10/04; C10N10/12; C10N20/00; C10N20/02; C10N30/08; C10N40/02; C10N40/04; C10N50/10
Domestic Patent References:
| WO2006078035A1 | 2006-07-27 | |||
| WO2008016038A1 | 2008-02-07 | |||
| WO2004044108A1 | 2004-05-27 |
Foreign References:
| JPH04130193A | 1992-05-01 | |||
| JP2008069282A | 2008-03-27 | |||
| JP2008156527A | 2008-07-10 | |||
| JP2003165988A | 2003-06-10 | |||
| JPH1017884A | 1998-01-20 | |||
| JP2008111515A | 2008-05-15 | |||
| JP2008111514A | 2008-05-15 | |||
| JP2002356693A | 2002-12-13 | |||
| JP2003105365A | 2003-04-09 | |||
| JPH07268372A | 1995-10-17 |
Attorney, Agent or Firm:
WAKI, MISAO (JP)
Wake 操 (JP)
Wake 操 (JP)
Download PDF: