The invention relates to a fluid dynamic air bearing system to rotatably support a motor. The bearing system comprises a stationary shaft, a bearing bush partially enclosing the shaft and connected to the shaft, a bearing plate partially enclosing the shaft and connected to the shaft, the shaft, the bearing bush and the bearing plate between them forming a cavity that is rotationally symmetric with respect to a rotational axis. A component partially enclosing the shaft and having a sleeve-shaped section and at least one disk-shaped section is rotatably accommodated in the cavity, a bearing gap filled with air or a gas separating the surface of the rotatable component from the surfaces facing the rotatable component of the shaft, the bearing bush and the bearing plate. The bearing system further comprises at least one radial bearing formed between the surfaces facing each other of the shaft and of the sleeve-shaped section, at least one radial bearing formed between the surfaces facing each other of the sleeve-shaped section and of the bearing bush, and at least one axial bearing formed between the end surfaces of the disk-shaped section of the rotatable component and the respective surfaces facing these surfaces of the bearing bush and the bearing plate.