This paper presents a novel disk-shaped single-drive bearingless motor. Only axial direction is actively positioned, and then, radial and tilting directions are passively stabilized. Generally, the rotor shaft length should be large compared with the outer diameter for the passive stabilization in the tilting direction. On the other hand, the proposed bearingless motor has large outer diameter and short axial length with positive tilting stiffness. In this paper, the novel concept of the proposed machine is presented. In addition, the magnetic suspension force and rotational torque are calculated in three-dimensional finite-element-method analysis.