Weihai Ball, Bot Seiko (certified), the ball screw is provided by Seiko Co., Ltd. Shandong Bot. Seiko Co., Ltd. Shandong Bot (www.jsinfo.com.cn) is specialized in the "ball screws, lead screws, linear guides, spindle" of the enterprise, the company adhering to the "honesty, hard service" concept, for You provide the highest quality products and services. Welcome to inquire! Contact: Zhang complete. Seiko Co., Ltd. Shandong Bot Ball Bearings produced to adapt to a variety of uses, providing a wide range of standardized products. Widely used in machine tools, ball circulation patterns have circulation conduit type, circulator type, cover type. Preload Preload positioning mode (double nut way preload-bit mode), constant pressure preload. Type can be appropriately selected according to the purpose. There are high-precision grinding screw machining precision ball screw (accuracy divided from CO-C7 of six levels) and by high-precision cold-rolled ball screw bearings molding (accuracy divided from the C7-C10 3 levels). In addition, users need to cope with the delivery, there has been carried out on the shaft end product processing can be carried out freely on the shaft end of the chase for processing semi-finished and cold-rolled ball screw bearings. As part of this bearing peripheral components necessary for the use of screw support units, nut bearing, locking nuts, etc. have also been standardized for the user to choose to use. Shandong Bot Seiko Co., ball outside the circle: the outer loop is the 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 outer loop mode cap formula; intubation; spiral trough. Cover type, processing a longitudinal hole in the nut, as the ball return passage, opened the cover nut backhaul ports at both ends of the ball, the ball will enter the return pipe to form a loop. Tube type, it uses the elbow as the return pipe Weifang Ball, this structure technology is good, but because the pipe protruding nuts in vitro, radial larger size. Spiral trough, which is milled in a spiral groove on the outer nut at both ends of the slot and threaded through holes drilled raceway tangent, Laiwu Ball return channel is formed, the structure than the structure of radial catheterization Binzhou Ball small size, but manufacturing is more complex. The outer loop of the ball screw outer loop structure and manufacturing process is simple, widely used. The disadvantage is difficult to do raceway seams smooth, affect the smooth ball raceways.