| abstract |
(57) [Problem] To provide a grease composition for a plunging type constant velocity joint that can efficiently lubricate a constant velocity joint, effectively reduce friction, and prevent generation of vibration. SOLUTION: It is selected from the group consisting of (a) base oil, (b) urea thickener, (c) molybdenum dithiocarbamate, (d) ester synthetic oil, (e) magnesium sulfonate and magnesium salicylate. At least one magnesium compound; and (f) a metal-free sulfur-phosphorus extreme pressure agent having a sulfur content of 10 to 30% by weight and a phosphorus content of 0.5 to 5% by weight. A grease composition for constant velocity joints. |