This application is directed to a bearing support. The bearing support comprises an enclosure, a rotating shaft, first and second bearings installed on the shaft, and a bearing spacer separating the first and second bearings. The first and second bearings comprise an inner ring configured to rotate with the shaft, an outer ring configured to rotate with the enclosure, and a rolling cage configured to enable the inner ring to rotate relative to the outer ring. The bearing spacer comprises lips that create gaps between the bearing spacer and the first and second bearings. Keys can lock the inner rings of the first and second bearings to the shaft and causes the inner rings to rotate with the shaft. The gaps cool the first and second bearings as the shaft rotates. The enclosure houses the first and second bearings, the bearing spacer, and at least a portion of the shaft.