Bearing structure

A structure comprising:

• a rotating shaft;
• a thrust collar that is attached to the rotating shaft and rotates together with the rotating shaft;
• and
• a pair of thrust bearings that include a first thrust bearing and a second thrust bearing, wherein:
• the thrust collar is located between the first thrust bearing and the second thrust bearing in an axial direction of the rotating shaft, the first thrust bearing includes a first substrate, a first electromagnet attached to the first substrate, a first member attached to the first substrate, and a first position detector that is attached to the first substrate and detects a position of the thrust collar,
• the first member being disposed between the first substrate and the thrust collar in the axial direction,
• the second thrust bearing includes a second substrate, a second electromagnet attached to the second substrate, a second member attached to the second substrate, and a second position detector that is attached to the second substrate and detects the position of the thrust collar,
• the second member being disposed between the second substrate and the thrust collar in the axial direction,
• the first electromagnet and the second electromagnet generate a magnetic force for supporting an axial load of the rotating shaft, and the first member and the second member generate dynamic gas pressure due to rotation of the rotating shaft for supporting the axial load, and
• the first position detector and the second position detector are disclosed so as to directly face the trust collar, respectively, in the axial direction.