To improve use efficiency of a working fluid in a fluid bearing.
The fluid bearing includes a pumping section 340 for supplying gas to a space 301 between a first member and a second member moving along the surface of the first member; and a return section 394 for returning the gas from the space 301 to the pumping section 340. The return section 394 may return the gas from the space 301 in the process in which the gas supplied from the pumping section 340 to the space 301 flows from the space 301 to the exterior. The pumping section 340 and the return section 394 may be mounted on the second member so as to move together with the second member. The pumping section 340 may include a tank storing compressed gas. The return section 394 may further include a recovery section for sucking and recovering the gas leaked between the first member and the second member, while being mounted on the second member and moving together with the second member.
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