An application device (27) for applying a layer of a building material in
powder form in a device (1) for manufacturing a three-dimensional object
by a layer-wise solidification of a building material at positions in the
respective layers that correspond to the object is provided. An
application element (61) that applies the building material in powder
form in the form of a layer and a drive mechanism (59) that moves the
application element (61) across a building plane (11) in order to apply
the layer of the building material are provided. The drive mechanism (59)
comprises an actuation piston cylinder system (69) and a brake piston
cylinder system (70).