Lathe

A lathe for performing longitudinal turning or short turning comprising a machine frame, a workpiece spindle unit arranged on the machine frame and having a non-rotatable bearing tube, a workpiece spindle housing and a workpiece spindle rotatingly drivable about a workpiece spindle axis in the workpiece spindle housing, said workpiece spindle being rotatably supported in said non-rotatable bearing tube and having a spindle workpiece receptacle for receiving a workpiece,

• a non-rotatable or stationary supporting unit arranged on the machine frame, the non-rotatable or stationary supporting unit having a bearing member receptacle, and a guide bushing for longitudinal turning, said guide bushing comprising a non-rotatable housing sleeve and a receptacle bushing rotatably mounted on said non-rotatable housing sleeve by at least one bearing and said receptacle bushing having a workpiece receptacle for receiving the workpiece, said non-rotatable housing sleeve being supportable in said bearing member receptacle in an area surrounding or circumscribing the workpiece receptacle radially to the workpiece spindle axis when converted in a longitudinal turning version of the lathe,
• when converted in a short turning version of the lathe, said guide bushing is removed and the workpiece spindle unit is moved in the direction of the non-rotatable or stationary supporting unit such that the non-rotatable bearing tube is supported in said bearing member receptacle of the non-rotatable or stationary supporting unit.