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Title:
LUBRICATING GREASE AND LUBRICATING-GREASE-FILLED ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2007/026868
Kind Code:
A1
Abstract:
A lubricating grease that excels in high-temperature durability, and that inhibits any reaction between fluorine and steel, having a prolonged service life; and a roller bearing filled with the lubricating grease. There is provided a fluorocomponent-having lubricating grease comprising a perfluoropolyether oil as a base oil and a fluororesin powder as a thickening agent and further comprising a substance capable of forming a film on a metal surface, wherein the substance is one having a -NH- bond in its molecular structure such as a diurea compound, a metal salt of organic acid such as sodium sebacate, a molybdic salt such as potassium molybdate or sodium molybdate, or a bismuth compound such as bismuth sulfate. Further, there is provided a roller bearing comprising a concentrically arranged inner ring and outer ring, multiple rolling elements interposed therebetween and a retainer separately retaining the rolling elements, wherein the above lubricating grease is charged around the rolling elements.

Inventors:
EGAMI, Masaki (())
江上 正樹 (())
Application Number:
JP2006/317315
Publication Date:
March 08, 2007
Filing Date:
September 01, 2006
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 5500003, JP)
NTN株式会社 (〒03 大阪府大阪市西区京町堀1丁目3番17号 Osaka, 5500003, JP)
EGAMI, Masaki (())
International Classes:
C10M169/00; C10M107/38; C10M119/22; C10M129/26; C10M133/20; F16C33/32; F16C33/34; F16C33/44; F16C33/56; F16C33/62; F16C33/66; C10N10/10; C10N10/12; C10N30/08; C10N40/02; C10N50/10
Foreign References:
JP2004339245A2004-12-02
JP2005105080A2005-04-21
JP2004123797A2004-04-22
JP2005042102A2005-02-17
Other References:
See also references of EP 1956072A1
Attorney, Agent or Firm:
WAKI, Misao (2-6 Shiroyama 1-chome, Toin-cho Inabe-gu, Mie 33, 5110233, JP)
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