A head suspension assembly couples a baseplate to a rotatable load through
a planar triangular piezo microactuator for effecting hingeless rotation
of the load. The microactuator expands, responsive to an excitation
voltage, with greater magnitude in one direction than in another
direction normal to the first direction, resulting in an angular movement
of the hypotenuse thereby rotating the load. The upper surface of the
microactuator is grounded to a bottom surface of the baseplate or load
beam to position the microactuator lead connection surface closest to the
load to facilitate trace routing. A load beam grounding surface may be
raised to accommodate the microactuator and fix the lead connection
surface on a common plane with the unraised surface to further minimize
trace routing and provide access for bonding the trace to the load beam.