| 摘要 |
<P>PROBLEM TO BE SOLVED: To firmly fix additional masses to all the outer rings of a double row bearing, and to precisely measure a resonance frequency based on total of bearing rigidities in all the row. <P>SOLUTION: In this resonance measuring instrument 20 for a bearing unit of the present invention, the each additional mass 22 is constituted of an elastic ring 30 having an inside diameter 30a larger than an outside diameter of the outer ring 24 of the bearing 25, and expandable radially, and a fixing ring 31 having great rigidity and fit around the elastic ring 30. The elastic ring 30 is engaged with the outer ring 24, the fixing ring 31 is thereafter engaged with the elastic ring 30 to press the elastic ring 30 radially, and the inside diameter 30a of the elastic ring 30 is contracted to fix the additional mass 22 to the bearing unit 21. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
