Ball speed limit is defined as the natural frequency corresponding to the speed of the ball screw. Critical speed of the ball screw rotation speed usually refers to a ball screw Yi wave vibration occurs, it is usually characterized by a ball screw year frequency. For example, a long 2000mm, 25mm diameter ball screws at both ends of the timing of the natural frequency of about 18HZ buy a ball screw, a ball screw ball screw the same sales, supported at both ends when the natural frequency will be reduced 8HZ. Ball screw all have what characteristics do: 1, ensure high-precision manufactured in Japan the world's highest level of machinery and equipment ball screw is the use of consistent production out of the ball screw uses, especially in its assembly, grinding, inspection and other process plant environment, while also being able to temperature and humidity control are very strict, but also have a sound quality management system, and thus be able to make precision fully guaranteed. 2, compared it with the sliding screw vice drive torque is 1/3 to buy Ball | Shandong Fu Jun (certified) | Tibet Ball is provided by Mechanical Technology Co., Ltd. Shandong Fu Jun. Machinery Co., Ltd. Shandong Fu Jun (www.fumotor.com) is an industry leader in Shandong Weifang, machinery and industrial products cooperation projects over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Shandong Fu Jun leadership with the staff warmly welcome all inquiries negotiations to create Shandong Fu Jun, a better future.