| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition capable of suppressing an induced thrusting force at a low value even in using under a high torque region, and especially suitable for tri-port type universal velocity joint, etc., by blending a base oil for a lubricating oil with a specific thickener and an additive having a specific structure. SOLUTION: This grease composition for a uniform velocity joint is obtained by blending a base oil for a lubricating oil with (A) a urea-urethane-based thickener containing (i) a diurea compound of formula I (R<1> is a 6-15C divalent aromatic hydrocarbon; R<2> , R<3> are each individually cyclohexyl, an 8-29C alkyl or alkenyl, etc.), (ii) a urea/urethane compound of formula II (R<4> is the same as R<1> ; R<5> and R<6> are each individually the same as R<2> ) and (iii) a diurethane compound of formula III (R<8> , R<9> are each individually the same as R<2> ) in a ratio of 20-95mol% component (i), 40-50mol% component (ii) and 1-50mol% component (iii), of which ratio of numbers of amino groups and alkoxy groups is (40/60) to (95/5), (B) an oxidized paraffine, etc., and (C) molybdenum dithiophosphate, etc. |
