| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroconductive grease composition exhibiting excellent electroconductivity and hardly suffering from deterioration in electroconductivity with time, and to provide a rolling device having a small electric resistance and hardly suffering from electrification over long terms. SOLUTION: The electroconductive grease composition 27 comprising a base oil, a thickening agent and an electroconductivity-imparting additive is sealed in a vacant portion of a deep grove ball bearing 21. The electroconductivity-imparting additive is an electroconductive polymer soluble in the base oil, and the content thereof is preferably at least 0.1 mass% and at most 10 mass% based on the whole electroconductive grease composition 27. COPYRIGHT: (C)2008,JPO&INPIT |
