An assembled unit, composed of a housing incorporating a single or multiple row roller bearing(s), designed to meet various or specific conditions of mounting.
astm b209 assn std single material response housing material document and classification, 2.1300 inches nominal assembly overall length, round, unthreaded mounting hole type, aluminum alloy 5052 housing material, 0.5000 inches minimum and 0.5040 inches maximum mounting hole diameter