As a further extension of the development of ball screw drive sliding screw and ball screw due to its high efficiency, low temperature, high-precision, high speed, high rigidity, reversible, long life, low power consumption, synchronization, high sensitivity, no gap, simple maintenance and CNC machine tools in contemporary feed servo mechanism has been widely used, in order to meet the requirements of CNC machine tools high feed speed, high precision, high stability and fast response, ball screw must be selected, and perform the necessary checking calculations. Ball choices include the contents of its precision selection, sizes (including lead and public Cheng diameter), and several other aspects of supporting way. Ball screw with a dynamic load carrying capacity or static load rating is expressed in the design and processing center in the general dynamic load rating is determined by ball screw sizes, but to withstand compressive loads on slender silk ball strut bar for stability calculation; pmi for high speed ball screw, ball screw support distance big check for critical speed; for high precision ball screw for rigidity checking; CNC machine tools, the need to account for its moment of inertia; the whole closed-loop system shuton ball screw, to be accounted for its resonant frequency. Ball peripheral component parts of linear servo system speed is a systems engineering. Ball Screw bearing stiffness and precision to improve the critical speed installation Nc, improve smooth movement, reduce noise effects can not be ignored. In order to reduce the inertia, the motion should reduce the number of parts and the quality of the ball screw 2040, the use of high-strength aluminum alloy, carbon fiber reinforced plastic or the like to reduce the weight of high-speed moving parts. Surrounding rolling linear guide, bearing etc. should also meet the requirements of speed. Only in this way, in the high-speed servo motor drive, the ball screw shaft to get high-speed, efficient expected results. Ball screw 1605, Korea and Taiwan transmission machinery, ball screw is provided by Dongguan Transmission Machinery Co., Korea and Taiwan. Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. (www.dghantai.com) is an industry leader in Dongguan, Guangdong, machine tool accessories, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Korea and Taiwan transmission machinery leadership with the staff warmly welcome all inquiries negotiations, Korea and Taiwan to create a better future transmission machinery.