While there’s a lot of focus on electronic controllers that can handle nano-level positioning or multi-axis synchronization, Rexroth explains how choices machine designers make in mechanical linear motion components are critical in achieving the best accuracy possible. Mechanical systems must be capable of taking full advantage of the instructions supplied by the motion controller. Considerations such as component sizing, linear guide and bearing design, ball screw and nut options and the system environment are all vital in obtaining the desired precision.