Patent ID: 7126787

Claim:
A system for concentrically aligning and attaching a disk clamp to a hub of a motor in a hard disk drive, comprising: a hub of a motor having a plurality of fastener openings formed on a bolt circle diameter, and an annular recess formed in and circumscribing the hub, the annular recess defining an outer wall; a disk clamp having a plurality of apertures extending therethrough at the bolt circle diameter, and an annular rim protruding from the disk clamp, the annular rim defining an inner wall; the disk clamp being centered on the hub by engaging the inner wall of the disk clamp with the outer wall of the hub such that the annular rim of the disk clamp is closely received by and seats in the annular recess in the hub; and the bolt circle diameter is radially outboard of a central bore, and the hub has an outer circumference at a perimeter of the hub that is radially outboard of the bolt circle diameter, and the annular recess is located radially between the bolt circle diameter and the outer circumference.