A hydraulic transformer wherein a multiplicity of displacers are guided in a
displacement
member. The stroke of the displacers is determined through the intermediary of
a cam element, with pressure medium supply and discharge being controlled through
the intermediary of a control member having at least three control grooves. In
accordance with the invention either the displacement member or the cam element
or the control member may be driven, whereasdepending on which component
is driventhe cam element or the displacement member is mounted so as to
be freely adjustable, and the remaining third component is accommodated integral
with the housing.
