| 摘要 |
A spindle motor comprises a fixed shaft member, a sleeve, and an annular chucking portion. The fixed shaft member has an annular collar protruding outward from and substantially perpendicular to the outer peripheral surface of said fixed shaft member, and also has a thrust flange provided a specific distance away from said annular collar. The sleeve component is monolithic with a hub component The annular chucking portion is formed to include a surface along an axial direction outside said thrust flange in a diameter direction of said thrust flange. The annular chucking portion is disposed at a position in an axial direction that includes a vertical position of a surface to which said disk is attached.
|
