| 摘要 |
A pivotally supporting device of a balance correcting device measuring an unbalance force, comprising a journal pivoting part having a mandrel pivotal ly supporting a rotating body around a vertical axis, wherein a thrust pivoting part pivotally supporting the bottom part of the rotating body is installed at the bottom part of the mandrel, a first fluid supply passage for supplying a fluid for floating is formed between the mandrel and the rotatably pivoting hole of the rotating body, and an annular groove and a second fluid supply passage for supplying the fluid for floating the rotating body by allowing t he second fluid passage to communicate with the annular groove are formed in th e thrust pivoting part opposed to the bottom part of the rotating body. A pivotally supporting device for balance correction measuring the unbalance force, comprising a journal pivoting part having a mandrel rotatably pivotin g the rotating body around a vertical axis in a floated state, wherein a thrus t pivoting part pivotally supporting the bottom part of the rotating body is installed in a floated state at the bottom part of the mandrel, a fluid supp ly passage for supplying a non-compressive fluid for floating is formed between the mandrel and the rotatably pivoting hole of the rotating body, and a spac e partfor widening those other than the pivoting part is formed in at least either of the mandrel and the rotatably pivoting hole.
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