1、心轴使用工具合金钢之材质，经热处理，使心轴更具耐磨性，硬度较高[HRC60&plu***n;2]。2、此顶针适用于重型车床及较重负载使用。型号ModelMS.NOA(mm)C(mm)D(mm)E(mm)F(mm)G(mm)K(mm)d1(mm)极限转速max.speedrpm精度（mm）accuracy径向载荷（Kg）max.loadD512219477.540569--20000.0122700D512N219478.54057910-20000.0122700D513324616.247579-1018000.0124200D513N324619.247594121018000.0124200D514430731254.56.599-1215000.0155500D514N430731154.56.5114141215000.0155500D515542921467.56.5124.5-1810000.0187200D515N542922.667.56.5139161810000.0187200D51665713017.6978172-248000.02211800D51777317511.8126.59.5211-357500.02516200D5180807317511.8126.58209.5-356500.03018600)