Bearing apparatus and producing method thereof

Details Bearing apparatus and producing method thereof Bearing apparatus and producing method thereof

2006-02-07

2006-02-07

Compton, Eric (Department: 3726)

Metal working

Method of mechanical manufacture

Process for making bearing or component thereof

C029S894361, C029S894362, C029S898070, C029S898090, C029S509000

Reexamination Certificate

active

06993844

ABSTRACT:
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.

REFERENCES:
patent: 6672769 (2004-01-01), Toda et al.
patent: 6908231 (2005-06-01), Hagiwara
patent: 2002-303332 (2002-10-01), None
patent: 2004-203213 (2004-07-01), None

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