Why are ball screws commonly used in linear modules?

●High Repeated positioning accuracy 

The rolling friction between the ball screw nut and the ball screw is realized by ball rolling. The linear movement is realized by the steel ball rolling. The guideway friction resistance is small, the difference between static and static friction resistance is small, and the repeated positioning accuracy is high, which is suitable for frequent starting or reversing moving parts.

●Low wear and high life

Because of the low friction energy consumption, the rolling contact can make the rolling linear motion system in a high precision state for a long time. At the same time, due to the use of lubricating oil is also very little, which makes the lubrication system design and use and maintenance of the machine tool become very easy. The hardness of the nut and ball screw is very high and there is rolling friction between them, so high fatigue life and precision life can be achieved

●Strong carrying capacity, high-speed movement is more stable

Rolling linear guide has good bearing performance, can withstand different directions of the force and moment load, such as bear up and down the left and right direction of the force, as well as the energy torque, shaking power short and swinging torque. Therefore, it has good load adaptability. The linear module with rolling screw can miniaturize the required power source and power transmission mechanism and greatly reduce the driving torque because of the small friction positive force. It can realize high-speed linear motion and improve work efficiency.

●Micro and high speed feed
The ball screw can achieve micro-feed and high-speed feed through many different thread spacing, as long as the pulse provided to the linear module is small enough, even the micron feed can be achieved, and the high-speed movement of the linear module can be achieved through the large lead screw.

Precision ground ball screw, rolled ball screw, miniature ball screw made in China- ALM (autolinearmotion.com)