The invention relates to a single-pole x-ray emitter including an emitter housing, in which an x-ray tube with a vacuum housing and a drive motor are arranged. A cathode that generates an electron beam, and a rotating anode that is struck by the electron beam along a focal path are arranged in the vacuum housing. The vacuum housing includes a drive-side housing wall and an anode-side housing wall, and the rotating anode is held in a torsionally rigid manner on an anode tube that is rotatably mounted on a stationary part of a rotor shaft that is coupled to the drive motor. The stationary part of the rotor shaft is joined to the anode-side housing wall of the vacuum housing via a ring-shaped fixing. The anode tube incorporates a temperature compensation element. A bearing of a rotating part of the rotor shaft is arranged within the anode tube. The vacuum housing is arranged so that the vacuum housing is electrically insulated from the emitter housing. The focal path is arranged on a side of the rotating anode that faces away from the anode-side housing wall. The single-pole x-ray emitter can be compactly constructed and has a better imaging property.