A disc drive system includes a recording disc rotatable about an axis, a
slider carrying a transducing head for transducing data with the disc, an
a dual-stage actuation assembly supporting the slider for positioning the
transducing head adjacent a selected radial track of the disc. The
dual-stage actuation assembly includes a coarsely movable support
structure and a microactuator. The microactuator includes a microactuator
frame attached to the support structure which includes a stator and a
rotor. The rotor is operatively attached to the slider an is movable with
respect to the stator in a first horizontal plane parallel to the surface
of the disc. A magnetic circuit is arranged to move the microactuator
rotor and the slider in the first horizontal plane generally parallel to
the surface of the disc, the circuit being partially formed on the
microactuator frame and partially formed on the support structure. A
plurality of standoffs are provided on the microactuator frame to
precisely space the microactuator frame from the support structure.