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Ball Splines

Thomson precision ball spline systems feature high speed, anti-friction linear motion under high torsional loads. They have high reliability under varying operating conditions and predictable life expectancy. Thomson precision ball splines resist radial displacements resulting from torque loads and require smaller forces to achieve axial displacement of the spline member while transmitting torque. They have application versatility such as helicopter motor couplings, translating dirve shaft couplings, non-swiveling telescoping struts, and much more.


Ball Splines Highlights

  • High speed, anti-friction linear motion under high torsional loads
  • Anti-friction linear travel by ball recirculation
  • Resistance to radial displacement resulting from torque loads
  • Smaller force required to reach axial displacement of spline members while transmitting torque
  • High reliability under varying operating conditions and predictable life expectancy
  • Minimal lash resulting from wear and elimination of stick-slip
  • Minimized friction reduces heat, preventing seizure
  • Custom machined keyways are available for both inner and outer race
  • Application versatility - helicopter rotor coupling; translating drive shaft coupling; non-swiveling telescoping struts; honing machine and drill press spindles; workhead and table ways; robot and remote handling machines

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Active Races


CAD Models

  • Configurable 2D/3D Partstream Models
  • Configurable 2D/3D Solidcomponents Models
  • Configurable 2D/3D PartServer Models
  • Static 2D/3D Model file downloads

NOTE: Please use Internet Explorer 11, Edge, Firefox, or Google Chrome with Edrawings Viewer

Partstream Interactive Viewer Instructions:
1) Select a product from the table below and Configure your model to the right of the viewer that appears.
2) Click the Create button at the bottom of the configurator and wait for model to load (may take a few minutes).
3) Click the Download tab and login to your account if requested (or register as a first-time user).
4) Select a format, wait for the file to be created (may take a few minutes), and click the Download button.

Ball Splines 2D/3D Interactive Models
Ball Spine Precision Rolled Assemblies
Ball Splines Outer Race (without keyway)
Ball Splines Outer Race (with keyway)
Legacy Ball Splines
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