The invention relates to rotating machine element that contains a mechanism actuated
by a fluid pressure. The aim of the invention is to allow for a supply of actuation
fluid also during the rotation. To this end, a non-rotating control element (2)
is mounted on two fluid bearings (3) on the machine element, said bearings
being spaced apart in the axial direction and allowing flows of actuation fluid
to flow from one element to the other. Feed lines (R, S) in the control element
are provided with a series of radially inwards facing ports (13, 14) and
reception channels (17, 18) in the machine element, a series of radially
outward facing orifices (15, 16) being disposed in such a manner that in
every relative position both elements for every individual flow of actuation fluid
are disposed such that at least one port (13, 14) is aligned with one associated
orifice (15, 16).
