| abstract |
Each boot (24) of a tripot type constant velocity joint (10a, 10b) comprises a polyester-based thermoplastic elasotomer (TPC). A grease (26) encapsulated in the boot (24) comprises a base oil, a thickening agent comprising a diurea-based compound, molybdenum dialkyldithiocarbamate sulfide, a sulfur-phosphorus based extreme-pressure agent being a sulfur-phosphorus based compound containing sulfur and phosphorus as constituting elements, and potassium borate hydrate. |