Magnecomp Corporation

Examples of a head stack assembly arm are described herein. The head stack assembly arm includes a load beam in an upper nesting configuration including a lift tab with an inner edge. The head stack assembly arm includes a load beam in a lower nesting configuration including a lift tab with an inner edge, the inner edge of the load beam in the lower nesting configuration is a different size from the inner edge of the load beam in the upper nesting configuration.

A flexure is described herein. The flexure includes a slider tongue with a proximal end and a distal end. The sliding tongue including a leading edge at the proximal end prone to contact an undersurface of a load beam attached to the flexure. The flexure also includes a magnetic read/write head slider attached to the slider tongue at the distal end, at least one PZT microactuator affixed to the slider tongue, between the proximal end and the distal end, and at least one dampening device at the leading edge of the slider tongue configured to reduce an impulse during a non-operational shock event and reduce stress on the at least one PZT microactuator.

A suspension assembly comprises a load beam including a proximal end terminating in a hinge, a gimbal assembly mounted to the load beam, a base plate, and PZT actuators. The base plate comprising a distal portion connected to the hinge, a proximal portion, and a neck portion disposed between the distal portion and the proximal portion, wherein the neck portion comprising side edges facing away from each other, wherein the side edges, the distal portion and the proximal portion define openings, wherein each of the side edges includes a protrusion at a center of the neck portion facing one of the openings. Each of the PZT actuators is disposed in one of the openings and mounted to the proximal portion and the distal portion.

A suspension assembly having a load beam that includes a lower surface, proximal end terminating in a hinge, a distal end, and a sag bend between the proximal end and the distal end. A base plate includes a distal end connected to the hinge. A gimbal includes a base portion that includes middle struts where proximal ends of the middle struts are welded to the load beam at locations adjacent the sag bend, and a distal end welded to the distal end of the load beam. When the middle struts are positioned in a neutral position, a gap G between an upper surface of the middle struts and a plane defined by the lower surface of the load beam does not exceed 10 μm for any point along the middle struts that are within a distance D of 0.5 mm from the sag bend.

A head gimbal assembly includes a gimbal having a base portion and a tongue that are joined together by a neck portion, a circuit mounted on the gimbal, a slider mounted on the tongue and electrically connected to the circuit, a first PZT actuator having a proximal end mounted on a first bonding site of the circuit and a distal end mounted on a second bonding site of the circuit, and a second PZT actuator having a proximal end mounted on a third bonding site of the circuit and a distal end mounted on a fourth bonding site of the circuit. The first and third bonding sites do not overlap with and are not directly supported by the base portion. The second and fourth bonding sites overlap with and are directly supported by the tongue.

Examples of a head stack assembly arm are described herein. The head stack assembly arm includes a load beam in an upper nesting configuration including a lift tab with an inner edge. The head stack assembly arm includes a load beam in a lower nesting configuration including a lift tab with an inner edge, the inner edge of the load beam in the lower nesting configuration is a different size from the inner edge of the load beam in the upper nesting configuration.

A trace gimbal is described. The trace gimbal includes outer struts including a front outrigger at a distal end of the trace gimbal and a rear outrigger at a proximal end of the trace gimbal. The trace gimbal also includes a connecting strut connecting to the front outrigger and the rear outrigger. The connecting strut can have a width greater than a width of the outriggers. An inner strut can be connected to the connecting strut at a first end and a slider tongue at a second end.

A trace gimbal is described herein. In some embodiments, the trace gimbal includes outer struts including a front outrigger at a distal end of the trace gimbal and a rear outrigger at a proximal end of the trace gimbal. The front outrigger includes a distal front outrigger and a proximal front outrigger, and the rear outrigger includes a distal rear outrigger and a proximal rear outrigger. The trace gimbal further includes a middle strut extending in a width direction of the trace gimbal and adjoining the proximal front outrigger to the rear outrigger, and an inner strut connecting the middle strut to a slider tongue. The inner strut includes a slot, and the inner strut and the middle strut adjoin the outer gimbal struts to the slider tongue.

A suspension assembly includes a load beam, a base plate connected to the load beam, and a single actuator disposed in an opening of the base plate. The single actuator is formed of a crystal material that expands along a first axis and contracts along a second orthogonal axis, and expands along the second axis and contracts along the first axis in response to respective first and second bias voltages. The single actuator is configured to flex the base plate when expanding along the first axis to rotate the load beam in a first rotational direction about a center of rotation located along the load beam, and flex the base plate when expanding along the second axis to rotate the load beam in a second, opposite rotational direction about the center of rotation.

A head gimbal assembly with a gimbal having a base portion and a tongue that are connected by a neck portion, wherein the tongue includes a first lateral side and a second lateral side opposing the first lateral side, first and second struts connected to the base portion, and a distal portion extending from distal ends of the first and second struts toward the tongue. First and second aft tethers have first ends connected to the first and second lateral sides respectively, and second ends connected to the distal portion. First and second fore tethers have first ends connected to the first and second lateral sides respectively, and second ends connected to the first and second struts respectively. A circuit is mounted on the gimbal. The slider is mounted on the tongue and electrically connected to the circuit.