same effect with regard to excessive radial vibrations of the rod 14 the disk 20 is provided with a small play with respect to the through bore 1b permitting the rod 14 to execute merely those radial vibrations that are within a permissible magnitude the lower support for the rod 15 in fig2 and 4 an elastic damping element 21 a tubular metal member 21b and a disk shaped metal member 21c being embedded in the rubber body 21a of this damping element this damping element 21 must be compressed after insertion in the annular space between the through bore 1b and a rod stub 15a in such a way that it is in contact with the wall of the through bore 1b with hitch radial force and thus is capable of absorbing high axial and radial rod forces compression of the damping element 21 takes place by tightening a screw nut 23 pressing a stop disk 22 against the collar 21d of the damping element 21 the screw nut 23 can be threaded on a threaded stem 15b at the end face of the stub 15a since this takes place in both end zones of the rod 15 the rod 15 is fixedly clamped in place axially and can execute only minor permissible axial vibrations unduly high axial vibrations of the rod 15 are prevented by the feature that the stop disk 22 is.