GREASE COMPOSITION FOR RESIN LUBRICATION AND ELECTRIC POWER STEERING DEVICE

摘要

Provided is a grease composition for resin lubrication which comprises a base oil, a diurea compound represented by formula (I) as a thickener, and a chain hydrocarbon polymer, the weight average molecular weight of the chain hydrocarbon polymer being 20,000-300,000. R1-NHCONH-R2-NHCONH-R3 (I) (In formula (I), R2 is a divalent aromatic hydrocarbon group having 6-15 carbon atoms. R1 and R3 are each independently a straight chain or branched alkyl group having 8-22 carbon atoms.)