Patent ID: 7658107
Filing Date: 2010-02-09
Classification: F16C,G01M

Abstract:
1. A device for correcting balance of a rotating body, comprising: a journal supporting part having a mandrel that rotatably supports the rotating body in a floating state about a vertical axis; a thrust supporting part that is provided at a lower end portion of the mandrel and supports a bottom part of the rotating body in the floating state; a first fluid supply passage that supplies fluid for floating to a rotation support hole of the rotating body; and a second fluid supply passage to supply fluid for floating the rotating body, wherein the second fluid supply passage opens at a plurality of openings on the thrust supporting part, wherein a first distance extends between centers of adjacent openings of the second fluid supply passage, and a second distance extends from a center of each of the openings to an outer peripheral end of the thrust supporting part, and wherein half of the first distance is smaller than the second distance.