| abstract |
(57) [Problem] To provide a grease composition which prolongs the lubrication life of an applied portion when used at a high temperature, and a grease-enclosed bearing in which the grease composition is encapsulated. SOLUTION: A thickener and an amide wax are blended in a base oil, and the amide wax has a melting point of 80%. ℃ or more, 0.5 to 10 with respect to the whole grease composition % By weight, and has an antioxidant effect on the base oil, and the base oil of the grease composition is at least one base oil selected from ether-based oils, ester-based oils and synthetic hydrocarbon oils, and kinematic viscosity at 40 ° C. is 20 ~ 150 mm 2 / s The thickener of the grease composition is a urea-based thickener, and is incorporated in an amount of 5 to 30% by weight based on the whole grease composition. |