A quad foil journal air bearing comprising: a journal sleeve that defines an inner surface contacting a dual double-wrapped foil assembly, the dual double-wrapped foil assembly consisting of a first key and a second key , the inner surface extending between a front side of the quad foil journal air bearing and a rear side of the quad foil journal air bearing located opposite the front side; the first key included in a first foil assembly and being coupled to the inner surface of the journal sleeve ; and the second key included in a second foil assembly and being coupled to the inner surface of the journal sleeve , wherein the first key and the second key are unequally spaced apart about a circumference of the quad foil journal air bearing and wherein the first and second foil assemblies have the same diameter and are disposed next to one another along the width of the quad bearing, and wherein the first and second foil assemblies each extend continuously about the entire circumference of the quad foil journal air bearing; wherein the first key is positioned at a location of the front side of the quad foil journal air bearing, the location of the front side being a first measure of degrees that is counterclockwise with respect to the gravity force direction extending through a circumference of the quad foil journal air bearing, and wherein the second key is positioned at a location of the rear side of the quad foil journal air bearing, the location of the rear side being a second measure of degrees that is counterclockwise with respect to the gravity force direction extending through a circumference of the quad foil journal air bearing. a journal sleeve that defines an inner surface contacting a dual double-wrapped foil assembly, the dual double-wrapped foil assembly consisting of a first key and a second key , the inner surface extending between a front side of the quad foil journal air bearing and a rear side of the quad foil journal air bearing located opposite the front side; the first key included in a first foil assembly and being coupled to the inner surface of the journal sleeve ; and the second key included in a second foil assembly and being coupled to the inner surface of the journal sleeve , wherein the first key and the second key are unequally spaced apart about a circumference of the quad foil journal air bearing and wherein the first and second foil assemblies have the same diameter and are disposed next to one another along the width of the quad bearing, and wherein the first and second foil assemblies each extend continuously about the entire circumference of the quad foil journal air bearing; wherein the first key is positioned at a location of the front side of the quad foil journal air bearing, the location of the front side being a first measure of degrees that is counterclockwise with respect to the gravity force direction extending through a circumference of the quad foil journal air bearing, and wherein the second key is positioned at a location of the rear side of the quad foil journal air bearing, the location of the rear side being a second measure of degrees that is counterclockwise with respect to the gravity force direction extending through a circumference of the quad foil journal air bearing. <EOS>