Title:
GREASE COMPOSITION, BEARING PRELUBRICATED WITH GREASE, AND ROTATION-TRANSMITTING APPARATUS WITH BUILT-IN ONE-WAY CLUTCH
Document Type and Number:
WIPO Patent Application WO/2006/112502
Kind Code:
A1
Abstract:
A grease composition which can effectively prevent the flaking on, e.g., rolling/sliding surfaces mainly caused by hydrogen embrittlement; a prelubricated bearing containing the grease composition enclosed therein; and a rotation-transmitting apparatus of the built-in one-way clutch type which contains the grease composition enclosed in the sliding part. The grease composition is obtained by incorporating an additive into a base grease comprising a base oil and a thickener. The grease composition can prevent hydrogen embrittlement and resultant flaking from occurring on the frictional/wearing surfaces of a sliding part or on a ferrous metal surface newly exposed by wearing. The additive comprises a bismuth additive or a magnesium additive, the bismuth additive being at least one member selected among inorganic bismuth compounds and organobismuth compounds containing no sulfur ingredient and the magnesium additive being at least one member selected among inorganic magnesium compounds and organomagnesium compounds.
Inventors:
MIKAMI HIDENOBU
KAWAMURA TAKAYUKI
KAWAMURA TAKAYUKI
Application Number:
PCT/JP2006/308314
Publication Date:
October 26, 2006
Filing Date:
April 20, 2006
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
MIKAMI HIDENOBU
KAWAMURA TAKAYUKI
MIKAMI HIDENOBU
KAWAMURA TAKAYUKI
International Classes:
C10M125/04; C10M101/02; C10M101/04; C10M105/18; C10M107/02; C10M115/08; C10M117/02; C10M125/10; F16C33/66; F16D41/06; C10N10/04; C10N10/10; C10N20/02; C10N20/06; C10N30/06; C10N30/08; C10N40/02; C10N50/10
Domestic Patent References:
| WO2005075610A1 | 2005-08-18 |
Foreign References:
| JPH1030096A | 1998-02-03 | |||
| JP2004124035A | 2004-04-22 | |||
| JPH0841478A | 1996-02-13 | |||
| JPS50134006A | 1975-10-23 | |||
| JPS60149696A | 1985-08-07 | |||
| JP2004270887A | 2004-09-30 | |||
| JP2003042166A | 2003-02-13 | |||
| JP2001123191A | 2001-05-08 | |||
| JP2004059814A | 2004-02-26 | |||
| JP2005076021A | 2005-03-24 |
Attorney, Agent or Firm:
Waki, Misao (Toin-cho Inabe-gu, Mie 33, JP)
Download PDF: