Magnetic head gimbal assembly and magnetic disk unit
View Patent ↗A magnetic disk unit includes a magnetic disk attached to a spindle so as to be rotatable, a slider having a magnetic head for reading/writing data onto/from the magnetic disk, a suspension for providing the slider with a predetermined load, and an actuator arm for positioning the slider attached to the suspension on the magnetic disk. A first pad including the magnetic head and second pads including no magnetic heads are disposed on an air bearing surface of the slider. During rotation of said magnetic disk, a part of the first pad keeps in contact with the magnetic disk. A load point of the suspension with respect to the slider is positioned between a leading edge of the slider and a position located at a distance equivalent to substantially 0.42 times a whole length of the slider from the leading edge of the slider.
1. A magnetic disk unit comprising:
a magnetic disk rotatably attached to a spindle;
a slider having a magnetic head for reading/writing data onto/from said magnetic disk;
a first pad disposed at the center of a trailing edge of said slider, and having the magnetic head disposed thereon;
second pads disposed on a leading edge of said slider, and having no magnetic head; and
a suspension providing said slider with a predetermined load at a load point; wherein said load point is located at substantially one third of a total length of said slider, from the leading edge of said slider, wherein said one third of a total length of said slider is subsequently matched with a center of impact which occurs as a result of the contact between said first pad and said magnetic disk;
wherein the slider is subjected to a pitch moment by a gimbal coupled to the suspension, whereby said pitch moment acts on the slider by applying a predetermined load upon the load point and also turns said gimbal by a predetermined angle in a direction as to move said first pad towards said magnetic disk.