5. High rigidity
If there is an axial clearance in the ball screw mechanism, when the direction of the axial load is changed, the above-mentioned axial clearance becomes an important source of the load motion error. By applying preload to the ball screw mechanism, the above-mentioned axial clearance can be made zero or less (negative clearance), thereby obtaining high rigidity and improving the motion accuracy of the mechanism under load
6. High-speed feed
Because the ball screw mechanism can be made into a larger lead, the transmission efficiency is high, and the heat generation is low, so high-speed feed can be realized. On the premise of ensuring that it is lower than the critical speed of the ball screw mechanism, the large lead ball screw pair can achieve a feed speed of 100m/min or even higher
7. High transmission efficiency
Usually only 20%~40% of the mechanical transmission efficiency can be achieved in the threaded screw mechanism, while the ball screw mechanism can achieve high mechanical transmission efficiency, up to 98%
8. Long service life
The hardness of the nut and the screw in the ball screw mechanism reaches HRC8~HRC62, and the ball hardness reaches HRC62HRC66, and the relative movement method of rolling is used to run almost without wear, so it can achieve a long service life
