| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-aligning roller bearing for preventing skew and reducing costs. SOLUTION: The self-aligning roller bearings are self-aligning roller bearings in multiple rows using an asymmetrical roller, and have retainers 4, 4 for retaining rollers 3, 3 in each row. Both the retainers 4 have a ring section 4a at a large-diameter side end that is at the large-diameter side of an inner ring orbital plane 1a. The roller 3 comes into contact with three points, namely an outer ring orbital plane 2a, the inner ring orbital plane 1a, and a retainer large-diameter side ring section 4a. In the retainer 4, a contact surface 4aa with the roller 3 at least in the large-diameter side ring section 4a is subjected to surface hardening treatment, and the surface hardness is set to be Hv 370 or more. COPYRIGHT: (C)2004,JPO |
