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.
2.5610 inches minimum and 2.5630 inches maximum bore diameter, steel comp 4130 overall material, 2.875 inches nominal housing diameter, 0.614 inches minimum and 0.618 inches maximum assembly overall length, mil-s-18729 mil spec single material response overall material document and classification