A method and system for scaling an original image into a scaled image is disclosed. The one or more insert parts are vulcanized into an elastomer of a bearing body between an inner and outer surface of the bearing body. The frequency-division multiplexed communications channel generally used to carry digital signals at frequencies above the POTS baseband in order to implement a digital subscriber line. The subtractor computes a difference between the reference level and a desired reference level to output a difference signal.