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.
52.00 millimeters nominal bore diameter, 2.797 inches nominal housing diameter, 3.000 inches nominal bolt circle diameter, 0.688 inches nominal assembly overall length, 0.166 inches nominal flange thickness