Six significant benefits of THK's Precision Ball Splines

August 11, 2023

Leading innovation in Ball Spline technology, THK offers a novel linear motion system to the market, in which the ball bearings in the spline nut transmit torque while moving linearly on precision-ground raceways on the spline shaft. 

The four major benefits of the Ball Splines include:

  1. High torque
  2. High rigidity
  3. Accurate positioning
  4. Non-rotational movement
  5. With THK's Ball Spline, a single spline nut can provide a preload. The Ball Spline, therefore, displays exceptional capability conditions affected by vibrations and impact loads, locations where a high level of positioning accuracy is required or areas where high-speed kinetic performance is required.
  6. When used as an alternative to a linear bushing, the Ball Spline achieves a rated load more than 10 times greater than the linear bushing with the same shaft diameter. This allows it to be designed and used in locations where an overhung load or a moment load is applied, therefore, the Ball Spline provides a high degree of safety and long service life.

Major applications

Some of the major applications for THK's Ball Splines include a shaft for die setting and similar applications requiring linear motion under a heavy load.

It can be used in loading systems and in similar applications requiring rotation to a given angle at a fixed position.

The Ball Splines can be incorporated into automatic gas-welding machine spindles and similar applications requiring a whirl-stop on one shaft, as well as in columns and in the arms of industrial robots.