Competitive Price Ball Splin with thread shaft

Ball Spline unique 40° angular contact design which enables the Ball spline delivers high sensitivity and extreme high load carrying capacity. The concept is optimal for the application involve with high speed, vibrates, impacts of loading and precise positioning requirements. Also when the Ball spline is used to function as linear bushing, the Ball spline provides ten times loading capacity than the linear bushing in the like dimensioned but with a compact profile. 

Product Application

It is optimal for machines using a combination of rotary and straight motions, such as scholar robot's Z-axis, assembly robot, automatic loader, and machining center's ATC equipment.

A ball spline incorporates grooves along the length of the shaft and on the inner surface of the spline nut to prevent rotation and transmit torque.

Another version of the ball spline is the rotary ball spline, which incorporates a rotating element - such as an angular contact ball bearing, crossed rollers, or gear teeth - on the outer diameter of the nut. This adds the capability of rotary motion to the linear motion provided by the ball spline - somewhat like a cross between a recirculating linear guide and a ball screw.

One shaft takes the place of two
Traditional linear bushings are almost exclusively used in dual-shaft configurations in order to prevent the bearings from rotating as they ride on the shafts. But since ball splines are inherently anti-rotation, they can be used in single-shaft configurations. And replacing two shafts with one also means a smaller footprint, less weight, and easier alignment and assembly.