Patent ID: 7900358
Filing Date: 2011-03-08
Classification: B60B,F16C,Y10T

Abstract:
1. A method of manufacturing a rolling bearing device for a wheel in which a rolling bearing is disposed around an outer circumference of a hub shaft which includes a through hole axially formed therethrough and an engaging portion, formed around an inner circumference of the through hole, to be engaged with an outer ring of a joint member, and a cylindrical end of the hub shaft is caulked to a rolling bearing by bending the end radially outward, the method comprising: preparing a collet chuck that includes a cylindrical portion and a plurality of separated portions formed by separating the cylindrical portion in an axial direction, the plurality of separated portions being radially expandable and shrinkable, and a diameter-changing portion for the collet chuck that radially expands and contracts the collet chuck; inserting the collet chuck into the through hole of the hub shaft in a state that the collet chuck is radially contracted; radially expanding the collet chuck so as to make the separated parts contact with the end; caulking the end of the hub shaft in the state that the separated parts are in contact with the end to prevent radially inward plastic deformation of the end; and radially contracting the collet chuck and extracting the collet chuck out of the hub shaft after the caulking.