| abstract |
The object of the present invention is to provide a grease composition for constant velocity joints having excellent wear resistance, and to obtain a base oil (A) and a urea-based thickener (B) represented by the following general formula (B1) Grease composition for constant velocity joints. R 1 ‑NHCONH‑R 3 ‑NHCONH‑R 2 (B1), in the above general formula (B1), the definitions of the symbols are the same as those described in the description. In R1 and R2 in the aforementioned general formula (B1), set the content of the aforementioned alicyclic hydrocarbon group as X molar equivalent, set the content of the aforementioned chain hydrocarbon group as Y molar equivalent, and set the content of the aforementioned aromatic hydrocarbon group When Z molar equivalent is used, the following requirements (a) and (b) are satisfied. Requirement (a): The value of {(X+Y)/(X+Y+Z)}×100 is 90 or more. Requirement (b): The X/Y ratio is 10/90 to 75/25. |