| abstract |
(57) [Problem] To provide a sufficient bearing life at a low cost even under a use condition where water is mixed into a lubricant from outside or by dew condensation, or under the influence of vibration. It is possible to obtain a rolling bearing suitable for electric components and accessories of an automobile engine such as an alternator. SOLUTION: The hydrogen ion exponent pH of grease sealed in a bearing is set in a range of 7-13. When a predetermined amount of an organic metal salt or ADTC is added to a grease, when a predetermined amount of an inorganic compound having an average particle diameter of 2 μm or less is added to a grease, or when a diurea compound containing an aromatic amine or a mixture of the diurea compounds is thickened When a grease is added to grease, the grease has a hydrogen ion exponent pH of 5 １３13. |