Patent ID: 6575535
Filing Date: 2003-06-10
Classification: B23P,B60B,Y10T

Abstract:
An improved wheel spindle of bearing steel having an unpressed, unassembled configuration and a final assembled configuration comprising: said spindle rotatable about an axis of rotation and having a flange extending radially outward and perpendicular to said axis of rotation; said spindle in said unpressed configuration having a plurality of wheel stud holes in said flange axially extending therethrough at circumferentially spaced increments with a surface hardness of a drilled hole; said spindle in said final configuration having a wheel stud with an axially extending serrated section press-fitted into and extending through each wheel stud hole; and, each stud hole having at least one counter bore at an axial end thereof defining a counterbore opening greater than the diameter of said stud and axially extending into each stud hole a set distance greater than 10% but less than 25% of the axial thickness of said flange whereby the perpendicularity of said flange to said axis of rotation in said final configuration is substantially the same as the perpendicularity which said flange had in its unpressed configuration.