實心或空心結構的圓柱體,為滾子軸承提供滾動元件。
0.6000 inches minimum and 0.6200 inches maximum overall length, 0.2498 inches minimum and 0.2500 inches maximum rolling element diameter, steel comp e50100 or steel comp e52100 overall material, 63.0 min rockwell c hardness rating special features, 66,aisi/sae e50100 or e52100 fed std single material response overall material document and classification