To provide a rolling bearing for a CT scanner capable of preventing or restraining noises without leakage of lubricant.

This rolling bearing 1 for a CT scanner comprises an inner ring 2, an outer ring 3, and a plurality of rolling elements 4 incorporated between raceways of the inner and outer rings 2, 3. Foamed solid lubricant 8 is filled in a bearing space surrounded by the inner and outer rings 2, 3 and the rolling elements 4, and the rolling bearing rotatably supports a rotary pedestal rotating around an object. The foamed solid lubricant 8 is formed by foaming and solidifying mixture containing a lubricating component, a resin component, a hardening agent, and a foaming agent.