| abstract |
(57) [Problem] To provide a constant velocity universal joint equipped with a boot made of a thermoplastic polyester elastomer, while maintaining required torque transmission performance and preventing the boot from being deteriorated by the used lubricating grease. . SOLUTION: The constant velocity universal joint is filled with lubricating grease, and is composed of a constant velocity universal joint with a boot sealed with a cylindrical boot made of a thermoplastic polyester elastomer, The lubricating grease is a constant velocity universal joint with boots comprising the following components. The lubricating grease is a lubricating grease obtained by increasing the base oil with lithium soap such as lithium 12-hydroxystearate or lithium complex, and blending molybdenum disulfide, molybdenum dialkyldithiocarbamate and zinc dithiocarbamate as extreme pressure additives. |