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。
40.0 millimeters nominal base length, crane,bridge end item identification, 16.5 millimeters nominal base thickness, 28.575 millimeters nominal bore diameter, 117.5 millimeters nominal center to center distance between mounting holes along width