Mid-loadbeam dual stage actuated (DSA) disk drive head suspension

A head suspension system comprising:

• a load beam comprising a metal base, the metal base having a spring region and a major planar section, the major planar section comprising a proximal portion that is distal of the spring region and a distal portion that is distal of the proximal portion, the load beam further comprising a first rail extending along each of the proximal portion and the distal portion, a second rail extending along each of the proximal portion and the distal portion, and a void in the metal base separating the proximal portion from the distal portion, the void extending from the first rail to the second rail, wherein each of the first rail and the second rail are oriented substantially orthogonal to the major planar section, the first rail being flat from the proximal portion to the distal portion, and the second rail being flat from the proximal portion to the distal portion;
• a first microactuator coupled to each of the proximal portion and the distal portion and extending across the void;
• a second microactuator coupled to each of the proximal portion and the distal portion and extending across the void;
• and
• a flexure electrically connected to each of the first microactuator and the second micro actuator, wherein electrical activation of one or both of the first microactuator and the second microactuator bend the first rail and the second rail to move the distal portion along a X-Y plane relative to the proximal portion, and wherein the first rail and the second rail stiffen the load beam to resist movement between the first portion and the second portion along a Z-axis.

A head suspension system comprising:

• a load beam comprising:
• a major planar section having a proximal portion and a distal portion;
• a first rail extending along a first lateral edge of the major planar section, the first rail oriented substantially orthogonal to the major planar section of the load beam, the first rail being straight from the proximal portion to the distal portion;
• a second rail extending along a second lateral edge of the major planar section, the first lateral edge opposite the second lateral edge, the second rail oriented substantially orthogonal to the major planar section of the load beam, the second rail being straight from the proximal portion to the distal portion;
• and
• a continuous void in a metal base of the major planar section, the continuous void extending from the first rail to the second rail to separate the proximal portion from the distal portion;
• and
• at least one microactuator, each microactuator coupled to each of the proximal portion and the distal portion and extending across the continuous void, wherein electrical activation of the at least one microactuator moves the distal portion relative to the proximal portion.