The invention relates to a rotatable patient
bed for RT applications. The patient
bed has a lower structure and an upper structure connected to each other by a lifting mechanism. A
lying table is arranged on the upper structure, and an adult can support the
lying table. The lower structure is supported at one of its ends on the base by means of a rolling bearing and thus can be rotated about a
vertical axis of rotation. The other end of the lower structure is not supported. A lifting mechanism is disposed between the two ends of the lower structure and below the upper structure. A drive is arranged on the
substructure and acts on a
drive shaft of the transmission. Rotation of the
drive shaft causes rotation of the driven shaft. The transmission has a transmission housing which is arranged on the base in a rotationally fixed manner and in which a
drive shaft and a driven shaft are mounted. The support is arranged on the driven shaft in a rotationally fixed manner and is connected to the
substructure in such a way that the support exerts a torque on the
substructure when the drive shaft is rotated in such a way that the substructure is rotated about the axis of rotation. The transmission device is a
structural element different from the rolling bearing. The transmission housing is arranged radially inside the rolling bearing with respect to the axis of rotation and is arranged axially in the region of the rolling bearing. The support acts on the substructure via a
coupling element, by means of which a torque applied to the support is transmitted to the substructure, a radial movement of the support relative to the substructure can still be achieved.