| abstract |
Provided are a grease composition for realizing a linear motion device having a long life even when a viscosity base oil is used and a low torque, and a linear motion device in which the grease composition is enclosed. A base oil having a base oil kinematic viscosity of 14 to 70 mm 2 / s at 40 ° C., and at least one selected from lithium stearate, lithium 12-hydroxystearate, and a specific diurea compound. And an extreme pressure additive containing at least one selected from molybdenum dithiophosphate, molybdenum dithiocarbamate, and thiophosphate, wherein the amount of the thickener is the grease composition 10 to 17% by weight with respect to the total amount, and the blending amount of the extreme pressure additive is 1 to 5% by weight with respect to the total amount of the grease composition. Disclosed are grease compositions that are 230-320. [Selection figure] None |