Ball Spline

Ball Spline

Ball splines are specialty linear bearings that combine nearly frictionless axial motion with highly constrained rotational positioning. They consist of a grooved nut that moves up and down a central shaft with matching grooves. Balls run in these splines to enable nearly frictionless axial motion. At the same time, the shape of the grooves and the shaft are such that the nut is rotationally fixed so that it can stabilize the load and/or transmit torque. Ball splines are particularly well-suited to applications with overhung or moment loads.

Caged ball splines benefit from the motion of evenly spaced ball elements to produce high-speed responsiveness. In addition, ball cage technology eliminates the collision and mutual friction of ball elements, reduces operating noise, and decreases production of particulates.

Medium-torque models have large load capacities in the radial and torque directions as each spline on the shaft is held by dual rows of ball elements in order to provide a preload.

High-torque models have an even larger load capacity and negligible angular backlash. These designs increase overall rigidity by providing a preload via dual rows of ball elements that hold each spline in place.

Rotary models are available with gear teeth on the flange circumference for torque transmission, or without teeth to enable unrestricted rotation on support bearings integrated with the outer surface of the spline nut.

Hybrid ball screw/splines have both helical threads and straight splines for rotational and linear motion on the same shaft. The ball screw and spline nuts have dedicated support bearings directly embedded on their circumferences.

Application of Ball Spline

Automation Industry, Semiconductor Industry, Industrial Machinery, Medical Industry, Solar Equipment, Tool Machinery, Parking Equipment and in related industries.