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US RE48,187 E1Granted
Grease composition for rolling bearing
AssigneesNsk Ltd., Kyodo Yushi Co., Ltd.
InventorsAtsushi Yokouchi, Jun Kuraishi, Youichiro Sugimori, Yasunobu Fujita, Michiharu Naka, Atsushi Shibayama, Hiroshi Kimura
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Abstract
A grease composition for rolling bearing comprising a metal soap-based thickening agent containing a long fiber-like material having a major axis length of at least 3 μm incorporated in a base oil comprising a lubricant having a polar group in its molecular structure and a non-polar lubricant blended in combination.
Claims12
A grease composition for rolling bearing comprising:
- a metal soap-based thickening agent containing a long fiber-like material having a major axis length of at least 3 μm incorporated in a base oil comprising a lubricant having a polar group in its molecular structure and a non-polar lubricant blended in combination,
- wherein the lubricant having a polar group in its molecular structure and the non-polar lubricant are incorporated in the base oil in such an amount that the content of the lubricant having a polar group in its molecular structure accounts for from 15% to 40% by mass of the total amount of said base oil, and the content of the non-polar lubricant accounts for from 60% to 85% by mass of the total amount of said base oil.
Dependencies are inferred from the claim text.