Ball spline spindle is a kind of precision linear motion functional component system, is the extension and optimization of rectangular spline and involute spline, is the realization of rolling friction instead of sliding friction results, and realize rectangular spline and involute spline transmission can not be achieved by the transmission and positioning accuracy and functionality, is the field of today's precision transmission of the promotion of the application of one of the functional components.
The ball spline pair can be divided into two categories, namely, flanged spline pair and grooved spline pair. Normally, the radial load and torque transmitted by the flanged spline pair is larger than that of the grooved spline pair. At present, the largest specification can be 200 millimeters in diameter of the spline shaft.