| abstract |
Provided are a grease composition capable of effectively preventing peeling on the metal surface due to hydrogen embrittlement and a grease-filled bearing in which the grease composition is sealed, when used in an environment where it comes into contact with an iron-based metal. A grease-enclosed bearing 1 includes a grease composition 7 encapsulated. The grease composition 7 is a grease composition in which an additive is added to a base grease composed of a base oil and a thickener. The additive contains at least one metal powder selected from aluminum, silicon, titanium, tungsten, molybdenum, chromium, and cobalt, or an inorganic compound thereof. [Selection] Figure 1 |