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.
steel overall material, "7.75"od" special features, 3.1500 inches nominal bore diameter, astm a-536-70 assn std single material response overall material document and classification, ican end item identification