Outer circulation ball screw pretension a way to increase the ball diameter: screw carrying capacity. Since the balls 4:00 contacted, how much ball screws, thus, friction large, easy fever, small preload preload torque and smooth. Good for small pre-load, transmit motion applications. Second, the displacement guide Cheng: two-point contact ball. Since only one nut, washer or nut eliminate manufacturing errors arising from the inclination and affect preload nut torque. Therefore, Hanzhong ball screw, tightening torque smoothly, but carrying small. Suitable for pre-load, positioning accuracy is required. Third, the gaskets: two-point contact ball. Screw carrying capacity, may exert greater preload preload preload when small torque smoothly. Suitable for high load, positioning accuracy is required. Structure of the traditional ball screw into the inner loop structure (with round and oval inverter inverter as the representative) and an outer loop structure (with intubation represented) two. These two structures is the most commonly used structure. These two structural performance is no essential difference, but the inner loop structure installation and connection of small size; outer loop structure is mounted to connect large size. Currently, there are 10 kinds of ball screw structure, but more common are: the inner loop structure; the outer loop structure; cap structure; cover structure Hanzhong Ball, Shandong Fu Jun, the ball screw shaft from Shandong Fu Jun Mechanical Technology Limited. Hanzhong Ball, Shandong Fu Jun, the ball screw shaft is Machinery Co., Ltd. Shandong Fu Jun (www.fumotor.com) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Li.