| abstract |
Providing a grease composition with low dust generation enough to be used in a clean environment such as a clean room and sufficient load resistance to lubricate a motion guide device incorporated in a larger clean robot The task is to do. A clean environment grease composition comprising a base oil, a thickener and an extreme pressure agent, wherein the base oil has a kinematic viscosity at 40 ° C. of 100 to 300 mm 2 / s, and as the thickener, a lithium complex The problem is solved by a grease composition for a clean environment containing soap and having a thickener content of 10 to 40% by mass based on the total amount of the composition. |