實心或空心結構的圓柱體,為滾子軸承提供滾動元件。
cylindrical roller, spherical ends style designator, 0.0310 inches minimum and 0.0312 inches maximum rolling element diameter, steel comp e51100 overall material, 0.2300 inches minimum and 0.2500 inches maximum overall length, b-52f,g,h acft end item identification