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NSK's precision machinery products also to a higher level of development, not only for Europe and advanced areas, but also for industrial development in the BRIC countries (BRICs) and other emerging countries to contribute. Semiconductor manufacturing equipment market share in high-tech industry in the field of proud personal computers, mobile phones and all other electronic products require semiconductors. Semiconductor production, requires a lot of steps, various steps are required corresponding manufacturing equipment. The semiconductor manufacturing process, using a lot of precision machinery products. Precision, speed, durability, clean environment correspondence, ??????. NSK products have been assembled in the factory to meet the semiconductor manufacturing high quality requirements. Station Platform Screen Doors continued to withstand repeated opening and closing of platform screen doors is to prevent passengers from falling onto the track and set up. In recent years, many railway platform platform screen doors for security set up, and this door opening and closing device you want to use linear guides and ball screws. Platform screen door requires a withstand repeated opening and closing, durability, etc. from people rely lateral forces. NSK products by customers trust in this area. Medical equipment for people to contribute to the health of medical equipment used in hospitals also require sophisticated machinery products. For example, CT scanners, in order to carry out sophisticated human fault blurred images, high-precision positioning technology is essential. In addition, biological inspection device and pharmaceutical capsule filling machines and other equipment, precision machinery products can not be separated. Environmental industry and efforts to protect the global environment and environmental protection enterprises contribute NSK bearings and precision machinery products, also used in the output of environmentally friendly use of wind energy and wind turbine manufacture, utilization of solar photovoltaic power generation equipment. In addition, NSK has developed a variety of environmentally-friendly products contribute for reducing the environmental impact of the user's machine to make a contribution. Then back to the trench, do endless loop Movement. Circulator formula (DK, DKN, DIK, JPF and DIR type) These models are the smallest nut, change the direction of the ball traveling through the circulator, over the outer diameter of the screw shaft back into place, do an infinite loop motion. These models cover type (SBK, SDA, SBKH, WHF, BLK, WGF, BLW, WTF, CNF and BLR type) is the most suitable high-speed feeding of nuts. Ball use cover, are picked up from the groove in the nut screw shaft through-hole, through-hole and back to the trenches, doing endless loop Movement. Driving torque is 1/3 As there are many balls in the rolling motion between the screw shaft and ball screw nut screw, it is possible to obtain a high efficiency of movement compared with the sliding screw vice. Compared with the past sliding ball screw drive torque reaches 1/3 of that required to achieve the same power as a result of the use of the rolling motion of screw vice 1/3. Helpful in saving. Ensure high-precision ball screw is generally used in the world's highest level of consistent production out of machinery and equipment, especially in the grinding, assembly, inspection of the process plant environment, temperature and humidity were strictly controlled, thanks to the improvement The quality management system so that accuracy can be fully guaranteed. Micro-feed may ball screw ball movement, so very small starting torque, will not be sliding motion as creeping phenomenon, to ensure accurate micro feed. No backlash, high rigidity ball screw can be added to the pressure, due to the axial clearance can achieve negative pressure, and then get the higher rigidity (ball screw ball through to add to the pressure, the actual used machinery When the devices, because the ball repulsion can enhance the rigidity Ministry of wire mother).