| abstract |
(57) [Abstract] [PROBLEMS] To provide a low-priced grease composition capable of imparting excellent high-temperature durability, high-speed performance, and dust resistance by enclosing in a bearing. Kinematic viscosity at 45-450 mm 2 / A synthetic oil of sec is used as a base oil, and as a thickener, the following general formula (I): (R 1 in the formula is an aromatic hydrocarbon group having 6 to 15 carbon atoms, R 2 and R 3 are each an aliphatic hydrocarbon group having 6 to 20 carbon atoms, a cyclohexyl derivative group having 6 to 12 carbon atoms or 6 carbon atoms. To 12 aromatic hydrocarbon groups, the proportion of cyclohexyl derivative groups in the total amount of R 2 and R 3 is 20 to 90 mol%, and R 2 and R 3 may be the same or different. 10 to 24 wt% of diurea compound represented by % Is contained. |