This study is to develop a core part Spindle and Nut Spindle of the electronic parking brake system. This demand is the development and launch notification referral order also commissioned state. Domestic competitors company developed and applied to workpiece of Spindle and Nut Spindle. In this study, the market advertisement is aimed over its competitors by developing cost competitiveness and quality stability through parts and components of precision forging engineering. Thus, axle measuring device system is needed to verify the reliability(fastening state of brake system) at the same time the development of Spindle and Nut Spindle. This study is performed to the following four aims. The first is the development of forging process technology for Spindle and Nut Spindle. The second is the development of mold design technology for Spindle and Nut Spindle. The third is the reliability secured technology for axle force(brake system force) of electronic brake system. The last is the development of forging and shape design simulation of Spindle and Nut Spindle.