A disk drive includes a disk and a head stack assembly for reading and
writing to the disk. The head stack assembly includes a body portion, a
first actuator arm cantilevered from the body portion and a second
actuator arm cantilevered from the body portion. A coil portion is
cantilevered from the body portion in an opposite direction from the
first and second actuator arms. An actuator arm spacer is disposed
between the first and second actuator arms and away from the body
portion, and mechanically links the first and second actuator arms.