| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance a rated load and prolong a life without making a dimension of outer shape large in a self-aligning bearing in which one end of a rotation shaft thermally expanding/shrinking in an axial direction is positioned in the axial direction. <P>SOLUTION: The self-aligning bearing 4 positions/supports one end of the rotation shaft in the axial direction and permits flexure of the rotation shaft. The self-aligning bearing 4 is made to a constitution of a double row cylindrical roller bearing with an aligning ring. A group of cylindrical roller 13 of the first row are clamped and positioned by a radially inward flange 15 provided on an axial midway of an outer ring 11 of which an outer peripheral surface is made to a spherical shape and a flange 16A provided on one outer end of two inner rings 12A, 12B in the axial direction. A group of cylindrical roller 13 of the second row are clamped and positioned by the flange 15 of the outer ring 11 and a flange 16B provided on the other outer end of the two inner rings 12A, 12B in the axial direction. Thereby, a total effective contact length of the double row cylindrical rollers 13 and an inner diameter dimension of the outer ring 11 can be made as large as possible without making a width dimension and an outer diameter dimension of the outer ring 11 in the axial direction large. <P>COPYRIGHT: (C)2004,JPO</p> |
