實心或空心結構的圓柱體,為滾子軸承提供滾動元件。
cylindrical roller, flat ends style designator, 1.5550 inches minimum and 1.5600 inches maximum overall length, steel comp e52100 overall material, 0.8348 inches minimum and 0.8350 inches maximum rolling element diameter, sae 521000 assn std single material response overall material document and classification