Yoso rotary ball screw and spline is designed to move linearly and rotationally in one assembly, withsymmetrical orientation design between the outer and inner ball screw or spline nut. Both rotary andspiral movement can be achieved simultaneously. TBI MOTION rotary line is the most ideal keycomponent in scara robots. industria robots. pick & place. aser enaraving. transporting and manv othemulti-directional application.