A duct rod system to be pushed in a conduit of a defined configuration for installing an elongated element in the conduit and comprising at least one rod having a flexible main body, the flexible main body having a bending stiffness arrangement defined in relation to the defined configuration of the conduit to permit a friction reduction of the flexible main body in the conduit. The housing includes a bottom side, two lateral sides, with the two lateral sides, two terminal sides and bottom side defining a compartment as well as an opening to allow the filling being poured into the housing. The present invention furthermore relates to a foil bearing enabling a linear andor rotary movement alongaround an axis. The controlled Rockwell hardness ensures that the desired average surface roughness can be maintained throughout repeated use of the fixture in harsh coating environments.