Suspension strut with level regulator function

The strut has a control sleeve (29) axially fixed in a piston rod-remote workspace, where the sleeve forms a pump chamber (37) that includes a pump rod (33) arranged in an interior (41) of a hollow piston rod. Absorbing medium passes from an equalization chamber to a ring cylinder (47) via flow connections by axial movement of the piston rod and the pump rod. The pump chamber is supported by the flow connections in the pump rod. The pump rod includes a rod hole (43) that passes through the workspace based on the flow connections. The ring cylinder is made of unprocessed semi-finished material.