一種圓柱形部件,其內圈或外圈在成排的硬化滾子上轉動,滾輪在滾道上滾動,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。不包括:圓柱形滾子軸承。
1.6533 inches minimum and 1.6535 inches maximum overall outside diameter, ams6444 assn std single material response overall material document and classification, steel overall material, 0.4674 inches minimum and 0.4724 inches maximum overall width, 0.7872 inches minimum and 0.7874 inches maximum bore diameter