Seiko Co., Ltd. Shandong Bot So far, the company has undertaken two screw, participated in the five "national science and technology major projects"; it also has a commitment to the national "863", "National Innovation Fund" and other projects; eight national standards, national patent forty-three. The implementation of these projects has greatly promoted the company's product upgrading and restructuring, accelerate the development of new products. 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. Jining screw cap type, processing a longitudinal bore trapezoid on 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, this structure technology is good, but because the pipe protruding nuts in vitro, radial larger size. Spiral trough ball screw, which is milled in a spiral groove on the outer nut at both ends of the slot and threaded through holes drilled raceway tangent to form the return channel, this structure than the structure of radial catheterization small size, but the manufacturing more complicated. 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. Screw | Shandong Bot Seiko | trapezoidal screw supplied by Seiko Co., Ltd. Shandong Bot. "Ball screws, trapezoidal screw, linear guide, spindle" preferred Shandong Bot Seiko Co., Ltd. (2), the company is located in: the 1st Mountain Bo Road, Jining City, Shandong Province, over the years, to provide customers with Seiko Bot the best quality service, Contact: Zhang complete. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Bot Seiko expect to be your long term partner!