| 摘要 |
PROBLEM TO BE SOLVED: To provide a grease composition capable of giving a long rolling fatigue life for a rolling support apparatus even if used under a severe lubrication condition. SOLUTION: The grease composition G containing an ion liquid as a base oil in a space 10 that is formed between an inner ring composed of a first inner ring 1 and a second inner ring 2, and an outer ring 3. COPYRIGHT: (C)2007,JPO&INPIT
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