Shell Oil Comapny

Toyota Jidosha Kabushiki Kaisha

Jtekt Corporation

Tetsuo Nimura

Keiji Tanaka

Noriaki Shinoda

Takumi Matsumoto

Yasushi Kawamura

Satoshi Suzuki

Takeo Yamamoto

Takashi Matsuda

Kazuhiro Miyajima

Kazushige Ohmura

Kouji Saitou

Kouichi Nakazawa

Kouichi Matsuura

Shinji Nakai

Tomoyasu Wada

Urea grease composition for constant velocity joints is provided containing base oil, one or more urea thickener compounds,  

Urea grease composition for constant velocity joints

A constant velocity joint includes an outer race having a plurality of ball grooves formed in an inner spherical surface thereof, which ball grooves extend in a direction of a rotation axis of the outer race, an inner once having a plurality of ball grooves formed in an outer spherical surface thereof, which ball grooves extend in a direction of a rotation axis of the inner race and are paired with the ball grooves of the outer race, and a plurality of balls disposed between the ball grooves of the outer race and the ball grooves of the inner race. In the constant velicity joint, the ball grooves of at least one of the outer race and the inner race are partially formed with relief profiles to provide a plurality of relief groove portions such that a load applied to each of the balls located in the relief groove portions during torque transmission between the inner race and the outer race is smaller than a load applied to each of the balls located in the other portions of the ball grooves.

Constant velocity joint

A grease composition for constant velocity joints, having a base oil and a urea-based thickener, which grease additionally contains, (A) molybdenum sulphide dialkyldithiocarbamate and (B) 5,5-dithiobis (1,3,4-thiadiazole-2-thiol); a method of lubricating a constant velocity joint including packing it with grease and a constant velocity joint packed with said grease.

Grease composition for constant velocity joints

Growing community of inventors

Toyota, Japan

Tetsuo Nimura