| abstract |
church-based grease composition, use of it, method for lubricating a bearing or gasket, roller bearing, and electrically assisted steering device. a urea-based lubricating grease composition comprising (a) as a thickener, a diurea compound which is an alkyldiurea compound having an average molecular weight in the range of 600 to 700, wherein in the range of 25 to 60% by weight of the total alkyl groups is an unsaturated component, and the total amine value of the primary amine constituting the crude material is in the range 250 to 350, (b) a base oil having as its main component one or more synthetic hydrocarbon (s) having a pour point of -40 ° C or below, where the kinematic viscosity of the base oil is 6000 mrn / s or less at -40 ° C, and (c) as additives, a mixture comprising an oil soluble organic molybdenum complex, an oil soluble organic zinc compound of dithiocarbamic acid, an oil soluble organic zinc compound of dithiophosphoric acid and an inorganic sulfur compound; and a roller bearing and electrically power steering device wherein said lubricating grease composition is used as the lubricant. |