A machine tool is provided, comprising a machine framework, at least one support device for a tool or a workpiece, by which a tool carrying out machining or a workpiece machined with a tool is held during the machining of the workpiece, and a holding device, which holds the at least one support device fixedly or movably in relation to the machine framework, wherein a bearing device is provided, by which the at least one support device is mounted on the holding device in a floating manner with displaceability in a direction of displacement along a displacement path, and wherein an adjusting device is provided, by which the position of the at least one support device along the displacement path can be set and can be fixed.