一種可拆卸組件,軸頸、活塞、樞軸或類似物可在其內或上移動。它用於承載載荷並減少滑動摩擦。它不使用滾動元件。此組件由一個鏜孔精密研磨球(或球面滑動軸承)及其外圈組成。該組件可以是可分離的,也可以是不可分離的。不含:桿端滑動軸承和球面滑動軸承。
3.3750 inches nominal bore diameter, c-17a aircraft end item identification, steel overall material, 3.0530 inches minimum and 3.0590 inches maximum inner member width, bearing,plain,spherical-loader slot assy,3.375 bore part name assigned by controlling agency