It is especially structurallysimple when the part is a matter of a hollow axle or a hollow shaft known per se from DE A 34 37 870 A1.An X-ray tube having a vacuum housing with a high-voltage terminal and a high-voltage plug interacting with the high-voltage terminal such that the risk of voltage arc-overs between the high-voltage plug and the vacuum housing is reduced isachieved by an X-ray tube w