實心或空心結構的圓柱體,為滾子軸承提供滾動元件。
steel comp e50100 or steel comp e51100 or steel comp e52100 overall material, 0.2300 inches minimum and 0.2500 inches maximum overall length, 66,aisi/sae e52100,e51100 oe 50100 fed std single material response overall material document and classification, rockwell hardness c scale 63 min 66 max special features, 0.1560 inches minimum and 0.1562 inches maximum rolling element diameter