| 摘要 |
<P>PROBLEM TO BE SOLVED: To prolong service life of an automatic aligning roller bearing by suppressing edge load and reducing bearing pressure in a central part of a spherical roller. <P>SOLUTION: A bus line of a raceway surface of an inner ring 2 has a hanging-down shape part 10 on an inner ring side for letting stress escape in which radius of curvature is smoothly and continuously changed in a section where it opposes to a head part side of the spherical roller 3 or an edge part 3a on an end part side. That is, in the hanging-down shape part 10 on the inner ring side, center of radius of curvature is set to an opposite side to center of radius of curvature of the raceway surface of the inner ring 2, and the radius of curvature is smoothly and continuously changed. Consequently, the hanging-down shape part 10 on the inner ring side can leave the head part side of the spherical roller 3 or the edge part 3a on the end part side gradually. Accordingly, contact excessive stress of the raceway surface 6 and the edge part 3a generated when heavy load condition is applied escapes effectively to prevent edge load. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
