| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve a drag against draft on a caulking part in a bearing device for an axle shaft. SOLUTION: The cylinder part on the free end of shaft 1, where the rolling bearing 2 with R chamfering 24a at the inside diameter corner part of the inner ring 24 is installed to the outside, is bended for outside of the diametrical direction and the bearing device fixes the rolling bearing 2 to the shaft 1 not to be draught by caulking along R chamfering 24a of the inner ring 24. Forming the corner part of inside diameter side on the caulking parts 14 into the conical shape that the diameter enlarges gradually for outside of the shaft direction, the location of minimum diameter of this conical surface 14a is arranged for outside of the shaft direction even more than the inner ring edge face in this bearing device. Such form of the caulking part 14 means that the inside diameter side corner part of the caulking part 14 got finished without plastical deformation in the process of caulking and can keep the thickness of inside diameter side corner part, namely the thickness between the conical surface 14a of caulking part and the inside diameter corner part of the inner ring 24, almost equally before caulking.</p> |
