實心或空心結構的圓柱體,為滾子軸承提供滾動元件。
0.0931 inches minimum and 0.0932 inches maximum rolling element diameter, 66 fed spec single material response overall material document and classification, 0.4940 inches minimum and 0.5040 inches maximum overall length, drop per side at gage line 0.0001-0.0002 in.; enthone ebonol s30 60380 roller special features, steel comp e50100 and steel comp e52100 overall material