Patent ID: 6250577
Filing Date: 2001-06-26
Classification: B02C,F16C

Abstract:
An apparatus for axially stressing a rotor element carried on a rotor shaft, comprising:a bearing cylinder concentrically positioned on the rotor shaft between the rotor element and a first end of the rotor shaft, the bearing cylinder including an inner radially extending side surface facing towards the rotor element, an outer radially extending side surface facing away from the rotor element, a plurality of axially extending threaded bores distributed about the rotor shaft and extending completely through the bearing cylinder, and a plurality of recesses formed into the outer circumferential surface of the bearing cylinder;a pressure ring concentrically positioned on the rotor shaft between the bearing cylinder and the rotor element;a retainer for preventing the bearing cylinder from moving axially along the rotor shaft away from the rotor element;a plurality of jack screws threaded into the plurality of threaded bores, in through the outer side surface of the bearing cylinder and out through the inner side surface of the bearing cylinder, forcing the pressure ring and bearing cylinder away from one another, thereby forcing the pressure ring axially against the rotor element; anda plurality of inserts made of an abrasion resistant material, each of the inserts being positioned within a corresponding one of the recesses so as to provide a bearing surface on the bearing cylinder.