不含滾珠軸承、滑動軸承或滾柱軸承的單件或多件式組件。其設計旨在滿足各種或特定的安裝條件。對於帶有軸承的組件,請參閱滾珠軸承單元;滑動軸承單元;以及滾柱軸承單元。
0.8125 inches nominal flange thickness, 5.6875 inches nominal housing diameter, 1.4990 inches minimum and 1.5010 inches maximum bore diameter, 4.9375 inches nominal bolt circle diameter, 0.4062 inches nominal mounting hole diameter