Ball screw classification
1、Axial play
the degree to which a ball nut can be moved in the screw axis direction without rotation of either the nut or screw.
2、Preload
the process of increasing the stiffness of a ball screw which removes backlash.
3、Lead accuracy
the degree to which the shaft's rotational movements are translated into the run's proportional linear movement.
The benefits of ball screw
1、can achieve efficiencies over 90%
2、minimal thermal effects
3、preloading can eliminate backlash
4、low friction
Selecting a ball screw
1、know the expected load and operating speed
2、required positional accuracy
3、any special mounting configurations or assembly instructions
4、special environmental conditions
