发明授权
US06794342B2 Grease composition and rolling bearing lubricated by the grease composition
有权
润滑脂组合物和滚动轴承由润滑脂组合物润滑
- 专利标题: Grease composition and rolling bearing lubricated by the grease composition
- 专利标题(中): 润滑脂组合物和滚动轴承由润滑脂组合物润滑
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申请号: US10098810申请日: 2002-03-14
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公开(公告)号: US06794342B2公开(公告)日: 2004-09-21
- 发明人: Hiroshi Komiya , Atsushi Yao , Nao Ito , Youzou Taniguchi
- 申请人: Hiroshi Komiya , Atsushi Yao , Nao Ito , Youzou Taniguchi
- 优先权: JPP2001-071692 20010314
- 主分类号: C10M12302
- IPC分类号: C10M12302
摘要:
In a grease composition which essentially comprises a base oil and a thickener, a mixture of a urea compound and lithium soap is blended as the thickener. The content of the urea compound in the thickener is preferably set to 20 to 80 wt %. As the urea compound, an alkyl group- or cyclohexyl group-terminated diurea compound, or, particularly, a diurea compound in which the diisocyanate component is 4,4′-diphenylmethane diisocyanate is preferably used. In a rolling bearing which is lubricated by the grease composition, the acoustic performance is largely improved by a synergistic action of the lithium soap and the urea compound, and simultaneously also the anti-fretting property is enhanced by an action of the urea compound.
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