Piezoelectric motor for hard disk drive actuator arm

A hard disk drive for using a plurality of recording heads to store data on recording surfaces of a plurality of rotating magnetic media disks, the hard disk drive comprising:

• a plurality of actuator assemblies, each of the actuator assemblies configured to suspend one or more of the plurality of recording heads over corresponding one or more recording surfaces of the plurality of rotating magnetic media disks, the plurality of actuator assemblies being independently rotatable around a single stationary pivot that is stationary relative to a housing of the hard disk drive;
• and
• a plurality of piezo motors, each of the plurality of piezo motors associated with a different one of the plurality of actuator assemblies and configured to rotate the associated actuator assembly around the stationary pivot,
• wherein the piezo motors are arranged into a first vertically aligned stack comprising a first portion of the piezo motors, the first vertically aligned stack positioned at a first location around the stationary pivot, and a second vertically aligned stack comprising a second portion of the piezo motors, the second vertically aligned stack positioned at a second location around the stationary pivot separated from the first location.