It is the action of the steel ball between the nut and the screw. It is the first mechanical component of the transmission which is made by the sliding contact of the traditional screw, modified into the rolling contact, and then converts the rotation of the steel ball inside the nut into the linear motion.
Ball screw has become one of the key components in the precision technology industry and precision machinery industry in recent years because of its high positioning accuracy, long life, low pollution, and the ability to do high-speed forward and reverse transmission and conversion transmission.

In recent year, as ever-changing technology, the demand for Miniature Guide Set in industrial automation has been increasing. In increasingly accuracy product, need smaller, lighter and more powerful components. Any size smaller than 10mm, precision accuracy between 5μm and 20 μm be called Miniature Guide set. Also can called Miniature Stroke.

The tolerance of the part size reflects the ease of processing, that means level of processing accuracy, it is the main basis for the development of processing technology.The tolerance range for hole shaft is generally 5 µm. Products below this tolerance, such as 3 µm and 2 µm, are called precision grade.

Ultra-high precision linear equipment that meets the needs of submicron (100nm~1μm).High precision and high rigidity are required for the production of optical equipment and semiconductors. Changing the rolling body from a ball to a needle increases the contact surface area to achieve high rigidity, and the ultra-high precision linear guide rail after using a needle reduces impact, friction and vibration when entering, thus achieving high precision and high linearity.