Lubrication device for a turbo machine

A lubrication device 1 for a turbomachine comprises lubricating supply means which supply a lubrication chamber 6 formed in a rotor 2 and a bearing 11 mounted between the rotor and a stator 22 in which the rotor is mounted. The lubricating supply means comprises a nozzle body 23 mounted on the stator with an ejection nozzle 34 at a free end of the nozzle body being configured to project lubricating fluid into the chamber. The nozzle body has a fixed part 26 and a movable part 27, which is movable between a retracted position in which the ejection nozzle is remote from, or at least partially outside, the chamber, and an extended position in which the ejection nozzle is closer to, or located at least partially within, the chamber. A process for assembling the lubrication device comprises moving the movable part to the retracted position and mounting the rotor axially inside the stator so that the movable part is axially arranged opposite to the lubrication chamber.