Abstract
How misalignment of nut effect to drive performance of ball screw hasn't been known. So the authors establish manner to set angular misalignment on the nut and experimentally make clear it. In addition, calculating load distribution of ball screw which have angular misalignment, authors estimate effect of angular misalignment, obtained results are as follows. 1) Angular misalignment on nut increase frictional torque of ball screw. 2) It is estimated that load distribution of ball screw effect to increase of frictional torque.
