High speed, high acceleration and deceleration of the machine requirements, so that the ball screw load increasing. In order to meet the requirements of high-speed, in general the choice of a large lead ball screw, however, the choice of a large lead ball screw can cause load capacity, insufficient rigidity problems. HIWIN has developed a high-speed ball screw sales, low vibration and low noise characteristics of the ball screw. As a result of the new cycle way, the DN value is multiplied by the number of revolutions the shaft diameter and up to 220 000, increased by 1 times higher than existing products. Moreover, noise can be reduced 5-7 db. In addition, because without a ball circulation pipe, compared with the existing similar products, nut diameter can be reduced by 15% to 30%. If necessary, can also be coupled with automatic lubrication components K1 high dust closures and maintenance-free. And have the big lead and lead many standard ball screw, and its products have won many major machine tool manufacturers. Over the years, HIWIN linear guide focuses on the development of its products in the load, stiffness, and other aspects of athletic performance superior to other manufacturers of similar products. 1) the outer loop: the outer loop is a ball at the end of the cycle through the outer surface of the spiral groove nut or screw nut between intubation return to re-enter the cycle. Shown in Figure 2-3, the outer loop of the ball screw nut ball circulation by way of return when the main cover type, tube and spiral trough. Common methods cover the outer loop type; intubation; spiral trough. Cover type, processing a longitudinal hole in the nut, as the ball of the return channel, opened on both ends of the ball nut cover backhaul mouth, thus the ball into the return pipe to form a loop. Tube type, it uses the elbow as the return pipe ball screw to join this structure technology is good, but because the pipe protruding vitro ball screw nut phone manufacturers, radial size larger. Spiral trough, which is milled in a spiral groove on the outer nut, through holes drilled at both ends of the slot and threaded raceway tangent form return channel, this structure is smaller than the radial size of the cannula structure, but manufacture more complex. Ball outer loop outer loop structure and manufacturing process is simple and widely used. The disadvantage is that it is difficult to do raceway smooth seams, affect the smooth ball raceway. Ball screw joining, Nanxiong ball screw, Dongguan, Dongguan City, Korea and Taiwan provided by Transmission Machinery Co., Korea and Taiwan. Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. (www.dghantai.com) strong, credible, in Dongguan, Guangdong and other machine tool accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Korea Taiwan transmission machinery and you hand into the brilliant, for a better future!