发明名称 |
Bearing apparatus and producing method thereof |
摘要 |
A bearing apparatus includes a hollow shaft provided around an outer peripheral surface with a bearing fitting region, and a rolling bearing having an inner ring fitted around the bearing fitting region of the hollow shaft. A shaft end of the hollow shaft is bent outwardly in a diametrical direction, thereby being caulked on an outer end surface of the inner ring. The bearing fitting region has a hardened layer in a region from a first position corresponding to an inner end surface of the inner ring of the rolling bearing to a second position before a position corresponding to an outer end surface of the inner ring, and has a non-hardened layer in another region from the outer end surface corresponding position of the inner ring to the shaft end. The second position representative of a caulked side end portion of the hardened layer is defined based on a predetermined relational expression.
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申请公布号 |
US6993844(B2) |
申请公布日期 |
2006.02.07 |
申请号 |
US20030706890 |
申请日期 |
2003.11.13 |
申请人 |
KOYO SEIKO CO., LTD. |
发明人 |
TODA KAZUTOSHI;INOUE MASAHIRO;TAKAHASHI KENJI;KAWATANI TERUYUKI;KASHIWAGI SHINICHIROU;WAKISAKA TERUYUKI;MITARAI TADASHI |
分类号 |
B21K1/40;B60B35/18;B21D53/10;B60B27/00;F16C19/18;F16C19/38;F16C25/08;F16C33/58 |
主分类号 |
B21K1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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