Patent ID: 7552526

Claim:
A tooling mandrel for use in assembling a disk drive, the disk drive including a disk drive base and a head stack assembly, the head stack assembly including a pivot bearing cartridge, the pivot bearing cartridge including a shaft and a sleeve disposed about the shaft, the shaft including a shaft first end with an engagement feature, the shaft defining an axis of rotation and a shaft outer circumferential surface, the sleeve defining a sleeve inner circumferential surface disposed towards the shaft outer circumferential surface, the tooling mandrel comprising: a retainer element defining a longitudinal axis and including a distal end, the distal end being sized and configured to engage the engagement feature of the shaft first end with the longitudinal axis being aligned with the axis of rotation; and at least two tooling fingers disposed about the retainer element, the tooling fingers being angularly fixed to the retainer element with respect to the longitudinal axis, the tooling fingers each include a tip portion, each tip portion including a distal-most surface disposed parallel to the longitudinal axis, each distal-most surface of each tip portion being sized and configured to engage the pivot bearing cartridge through cooperative radial movement with respect to the axis of rotation with the distal end of the retainer element being engaged with the engagement feature of the shaft first end.