A micro-actuator for a head gimbal assembly includes a metal frame, PZT elements, and a rigid beam. The metal frame includes a top support adapted to support a slider of the head gimbal assembly, and a pair of side arms extending vertically from respective sides of the top support. The top support includes a rotatable plate and connection arms that couple the rotatable plate to respective side arms. A PZT element is mounted to each of the side arms. Each PZT element is excitable to cause selective movement of the side arms. The rigid beam is mounted between the side arms at an end opposite the top support.

 
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> Magnetic head positioning mechanism

> Disk drive having a head amplifier for perpendicular magnetic recording

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