Actuator assembly and magnetic disk device

An actuator assembly comprising:

• a first head suspension assembly comprising a suspension including a first surface, a second surface on an opposite side and a center axis, a wiring member and a magnetic head which are mounted on the first surface of the suspension, and a piezoelectric element mounted on the suspension and bonded to the suspension by a first conductive adhesive applied to a side of the second surface;
• and
• a second head suspension assembly comprising a suspension including a first surface, a second surface on an opposite side, and a center axis, a wiring member and a magnetic head mounted on the first surface of the suspension, and a piezoelectric element mounted on the suspension and bonded to the suspension by a second conductive adhesive applied to a side of the second surface,
• wherein
• the first head suspension assembly and the second head suspension assembly are arranged in such a manner that the second surfaces of the suspensions oppose each other and the piezoelectric elements oppose each other, and a top portion of the first conductive adhesive is located to be offset in a planar direction of the suspension with respect to a top portion of the second conductive adhesive.