Abstract: A rotor device for a vacuum pump comprises a rotor shaft and at least one rotor element on the rotor shaft. The rotor element contains aluminum, titanium and/or CFRP, while the rotor shaft contains a chromium-nickel steel. This makes it in particular possible to join the at least one rotor element to the rotor shaft at room temperature using a pressing process.

Abstract: A vacuum pump (10) includes a control device (20) for processing operational data and operational instructions. Further, the vacuum pump (10) includes a touch screen (40) serving as display for displaying the operational data callable from the control device (20) and as input for inputting operational instructions into the control device (20). The touch screen (40) includes a display panel (42) and a key panel (44) as display and the input, respectively, and is connected with the control device (20) via a data line (36). By combining the display and the input in a single device, namely the touch screen, the trouble for display and data input is reduced.