Ntn Corporation

Showa Shell Sekiyu K.k.

Toshiharu Kato

Kiyoshi Takeuchi

Shin Tomogami

Shinichi Takabe

Takashi Okaniwa

Takahiro Ozaki

Yasushi Kawamura

Tetsuo Tsuchiya

Keizo Nagasawa

Fumio Goto

Tomoo Munakata

A grease composition for a tripod type constant velocity joint, which includes a base oil, a urea compound as a thickening agent, and not more than 10% by weight of at least one of (A) a molybdenum dialkyldithiocarbamate and (B) a molybdenum dialkyldithiophosphate or diaryldithiophosphate, in which the base oil has a kinematic viscosity of from 3.0 to 7.5 mm.sup.2 /sec at 100.degree. C. The grease composition applied to a tripod type constant velocity joint reduces the induced thrust force and thereby suppresses vibration, such as a shudder of a car body upon starting off and acceleration.

Grease composition for tripod type constant velocity joint

A grease composition for constant velocity joint, particularly Zeppa type joint comprises a base oil and contains (A) a particular diurea compound as a thickener, (B) molybdenum sulfide dialkyldithiocarbamate, (C) an extreme pressure additive of zinc dithiophosphate, (D) a sulfur-phosphorus series extreme pressure additive containing no metallic element and having a sulfur content of 10-30% by weight and a phosphorus content of 0.5-5% by weight, and (E) lead dialkyldithiocarbamate as an essential component.

Grease composition for constant velocity joint

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Shizuoka, Japan

Toshiharu Kato