| abstract |
A grease composition containing a lubricant basenoil, diurea compounds represented by the followingngeneral formulas (1) to (3), and an organic molybdenumncompound; wherein respective contents of the diureancompounds represented by the following general formulasn(1) to (3) satisfy conditions defined by the followingnexpressions (4) and (5); and wherein the organicnmolybdenum compound is contained by 0.1 to 20 mass%nbased on the total amount of the grease composition:n n n nwhere R 1 is a hydrocarbon group containing an aromaticnring, R 2 is a divalent hydrocarbon group, and R 3 is anhydrocarbon group containing an aliphatic ring;n 5 ≤ W 1 + W 2 + W 3 ≤ 30 n 0.1 ≤ ( W 1 + 0.5 × W 2 )/( W 1 + W 2 + W 3 ) ≤ 1.0 nwhere W 1 , W 2 , and W 3 are respective contents (mass%) ofnthe diurea compounds represented by general formulas n(1) to (3) based on the total amount of the greasencomposition. |