Steinmeyer recommends maintaining the mounting tolerances shown on this page. Optimum alignment of the screw with the guideways and square and concentric mounting of the nut will ensure proper operation of the drive system and long life of the ball screw.
After installation, check that the screw spins freely and without excessive friction over its entire travel. If there is any binding or considerable increase in effort necessary to turn the screw, especially near the support bearings, this indicates the alignment of the screw and the guideways should be improved. Binding indicates excessive side loads which can and will shorten the service life of the ball screw unless corrected.