A single or multiple piece item without ball, plain or roller bearing(s). It is designed to meet various or specific conditions of mounting. For items with bearings, see bearing unit, ball; bearing unit, plain; and bearing unit, roller.
nimitz class cvn ship end item identification, 1.9990 inches minimum and 2.0000 inches maximum bore diameter, bearing isolator p/n 715-2000-2875-1-1 part name assigned by controlling agency