A mechanical bearing contains a first component and a further component, wherein the mechanical bearing is designed such that the first component and the further component are able to execute a bearing movement relative to each other, wherein the first component or the further component contains a cermet or both contain a cermet. The invention further relates to an implantable medical device containing the mechanical bearing, in particular to a blood pump, and also to a use of a cermet for producing a mechanical bearing, and to a use of the mechanical bearing for supporting a component of an implantable medical device.