SUPERCONDUCTING BEARING SYSTEMS USING HIGH-TC SUPERCONDUCTORS

To realize pratical use of superconducting bearings, three types of su perconducting bearing systems using high Tc superconductors are constr ucted. This paper describes static characteristics such as load capaci ties of the bearings and dynamic characteristics of the rotors. Spin-d own tests of the rotors are performed to evaluate dynamics of the syst ems. One of three rotors of the bearing systems is very well self-cent ered in the speed range not exceeding 63,000 rpm. The displacements of the rotor are smaller than 30 mu mp-p (peak to peak) except near the critical speeds.