一種圓柱形部件,其內圈或外圈在成排的硬化滾珠軸承上轉動,滾珠在滾道上滾動,從而最大限度地減少摩擦。此類零件的特徵是耐腐蝕、重量輕、採用英制尺寸而非公制尺寸、內圈通常突出於外圈表面,或內圈寬度極窄,外徑略大於內孔徑。主要用於飛機組件,例如控制系統和飛機表面。不含:環形滾珠軸承。
8.4992 inches minimum and 8.5008 inches maximum overall outside diameter, 0.5590 inches minimum and 0.5650 inches maximum overall width, radial load direction, mil-g-23827 mil spec single material response lubrication material document and classification, 7.1867 inches minimum and 7.1883 inches maximum bore diameter