| abstract |
Provided is a grease composition that is excellent in quietness, high-temperature and high-speed durability, and fretting resistance when encapsulated in a rolling bearing or the like, and that can sufficiently reduce rotational torque. A grease composition 7 sealed in a grease-filled bearing 1 has a kinematic viscosity (40 ° C.) of 20 to 35 mm 2 / s, a base oil containing an ester oil, and a thickener containing an aliphatic diurea compound. In the base grease consisting of the above, curcumin and two kinds of predetermined zinc dithiophosphates are blended at a predetermined ratio as additives. [Selection] Figure 1 |