PURPOSE: To carry out high speed rotation of a rotary unit by decreasing deflec tion of the rotary unit, and stably supporting it in a noncontact condition.

CONSTITUTION: A superconductive bearing device comprises an annular permanent magnet part 2 concentrically provided in a rotary unit 1 and an annular superconductor part arranged in a fixed part so as to be opposed with a space in the rotary shaft center direction relating to an end face of the permanent magnet part 2. The permanent magnet part 2 is formed of a disk 5 fixedly provided in the rotary unit 1 and an annular permanent magnet 6 arranged in the disk 5. A position adjusting screw 8 possible to adjust a position of the permanent magnet 6 relating to the disk 5 is provided in the permanent magnet part.