| abstract |
An object of the present invention is to suppress the occurrence of fretting wear while maintaining a bearing life. A base oil comprising a mineral oil and a synthetic oil mixed in a mass ratio of mineral oil: synthetic oil = 0: 100 to 20:80, and a kinematic viscosity at 40 ° C. of 70 to 150 mm 2 / s. And a thickener containing an aromatic diurea, and the thickener aggregate has a maximum diameter of 40 μm or more and a projected area ratio of the thickener of 10% or more, and the grease composition Rolling bearings that contain objects. [Selection] Figure 1 |