實心或空心結構的圓柱體,為滾子軸承提供滾動元件。
carbon overall material, +55,77200 mfr ref single material response overall material document and classification, 0.2920 inches minimum and 0.3020 inches maximum overall length, 0.2100 inches minimum and 0.2105 inches maximum rolling element diameter, surface fin. left and right ends 25 uin aa,od 150 uin aa,left and right end surfaces parallel within 0.001 in. tir and sq w/od within 0.001in. special features