Bearing device and method of manufacturing the bearing device

A bearing device comprising a shaft body having an axially cylindrical portion in a free end side thereof and a rolling bearing fitted around an outer peripheral surface of the shaft body, wherein the cylindrical portion is bent and deformed radially outward by a rolling caulking to be caulked there...

Full description

Saved in:
Bibliographic Details
Main Authors Toda, Kazutoshi, Kashiwagi, Shinichirou, Ishii, Tomohiro, Mitarai, Tadashi, Tomita, Daisaku
Format Patent
LanguageEnglish
Published 02.10.2003
Online AccessGet full text

Cover

More Information
Summary:A bearing device comprising a shaft body having an axially cylindrical portion in a free end side thereof and a rolling bearing fitted around an outer peripheral surface of the shaft body, wherein the cylindrical portion is bent and deformed radially outward by a rolling caulking to be caulked thereby on an outer end face of an inner ring of the rolling bearing. An inner peripheral surface of the cylindrical portion is formed by a turning work, and a residual stress left in a surface layer of the inner peripheral surface of the cylindrical portion by the turning work is set to a value capable of restraining a crack generation ratio in the inner peripheral surface to less than a predetermined rate, desirably to not more than 5 kgf/mm 2 .