A rotor for a high-speed electrical machine with gas bearings includes at least one rotor side radial bearing, a rotor side axial bearing, a rotor body including the at least one rotor side radial bearing, and a rotor end piece including the rotor side axial bearing. When seen along the rotor's axis of rotation, a radial bearing section is defined as a section along which a radial bearing extends. Therein, the rotor end piece radially surrounds the rotor body at the interface of these two parts.