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    • 89. 发明专利
    • Waterproof grease, rolling bearing and wheel bearing sealed with the grease
    • 防水油脂,滚动轴承和轮毂轴承密封与油脂
    • JP2008001864A
    • 2008-01-10
    • JP2006175284
    • 2006-06-26
    • Ntn CorpNtn株式会社
    • SATO YOJIEGAMI MASAKI
    • C10M169/00C10M115/08C10M119/24C10M129/76C10M133/12C10M135/10C10M137/10C10M159/24C10N10/04C10N20/00C10N30/00C10N40/02C10N50/10F16C33/66
    • PROBLEM TO BE SOLVED: To provide waterproof grease improving the resistance to surface starting peeling of a bearing using carbon steel, etc., for a mechanical structure even under harsh lubricating conditions such as those causing water mixing in a grease during bearing operation and to provide a rolling bearing and a wheel bearing using the grease and exhibiting prolonged life.
      SOLUTION: The waterproof grease is obtained by compounding a base grease composed of a non-aqueous base oil and a thickener with Ca sulfonate, sorbitan monooleate, zinc dialkyldithiophosphate and an amine-based antioxidant as additives. The saturated water content dispersible in the grease is 30-60 wt.%. The waterproof grease is prepared by compounding 100 pts.wt. of the base grease with 0.5-2 pts.wt. of the Ca sulfonate, 0.2-1 pt.wt. of the sorbitan monooleate, 2 pts.wt. of the zinc dialkyldithiophosphate and 1 pt.wt. of the amine-based antioxidant, respectively. The waterproof grease is sealed in the wheel bearing 6.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使在诸如在轴承操作期间在润滑脂中混合水的恶劣润滑条件下,也提供用于机械结构的用于使用碳钢等的轴承的抗表面起始剥离的防水油脂 并提供使用润滑脂的滚动轴承和车轮轴承,并且延长使用寿命。 解决方案:通过将由非水基础油和增稠剂组成的基础油与Ca磺酸盐,脱水山梨糖醇单油酸酯,二烷基二硫代磷酸锌和胺类抗氧化剂混合,作为添加剂,得到防水润滑脂。 润滑脂中分散的饱和水分含量为30-60重量%。 防水润滑脂通过配制100重量份 的基础油脂,0.5-2重量份 的磺酸钙,0.2-1重量份 的脱水山梨醇单油酸酯,2重量份 的二烷基二硫代磷酸锌和1重量份 的胺类抗氧化剂。 防水润滑脂密封在车轮轴承6中。版权所有(C)2008,JPO&INPIT