Patent ID: 7973000

Claim:
A semisolid lubricant composition for a transmission element capable of reducing wear of sliding portions of the transmission element, comprising: an amide compound having one or two amide groups and forming a three-dimensional network structure, the amide compound being at least one compound represented by any one of following formulas (1) to (3) with the content thereof being 0.1 to 70 mass % R 1 —CO—NH—R 2 (1) R 3 —CO—NH-A 1 -NH—CO—R 4 (2) R 5 —NH—CO-A 2 -CO—NH—R 6 (3) where R 1 , R 3 , R 4 , R 5 , and R 6 individually represent a saturated or unsaturated linear hydrocarbon group having 5 to 25 carbon atoms, R 2 represents hydrogen or a saturated or unsaturated linear hydrocarbon group having 5 to 25 carbon atoms, and A 1 and A 2 individually represent an alkylene group having 1 to 10 carbon atoms; and a liquid base oil component having a kinetic viscosity at 100° C. of 25 mm 2 /s or lower and a viscosity index of 120 or higher, wherein the composition substantially contains no component other than the amide compound, the liquid base oil component, and optionally a polymer having a molecular weight of 1000 or more, with a polymer content being 3 mass % or less.