Bearing apparatus and producing method thereof

A bearing apparatus comprises a hollow shaft (14) provided around its outer peripheral surface with a bearing fitting region, and a rolling bearing having an inner ring (15) fitted around the bearing fitting region of the hollow shaft. A shaft end of the hollow shaft (14) is bent outwardly in a diam...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHASHI, KENJI, MITARI, TADASHI, KAWATANI, TERUYUKI, TODA, KAZUTOSHI, INOUE, MASAHIRO, KASHIWAGI, SHINICHIROU, WAKISAKA, TERUYUKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AXLES FOR WHEELS OR CASTORS BEARINGS BLASTING CASTORS ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INCREASING WHEEL ADHESION LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE WHEELS VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A bearing apparatus comprises a hollow shaft (14) provided around its outer peripheral surface with a bearing fitting region, and a rolling bearing having an inner ring (15) fitted around the bearing fitting region of the hollow shaft. A shaft end of the hollow shaft (14) is bent outwardly in a diametrical direction, thereby being caulked on an outer end surface (15a) of the inner ring (15) of the rolling bearing. The bearing fitting region has a hardened layer (24) in its region from an inner end surface corresponding position of the inner ring of the rolling bearing to a portion before an outer end surface corresponding position, and has a non-hardened layer in its region from the outer end surface corresponding position of the inner ring to the shaft end of the hollow shaft. A position of a caulked side end portion of the hardened layer is defined based on a predetermined relational expression.