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Thomson Ball Splines

Ball Splines consist of mating inner and outer races containing concave axial races and a complement of bearing balls. The balls provide the only physical contact between the inner and outer races. Unlimited rolling travel is achieved by diverting the path of the balls at the extremes of the outer race into the end cap return circuit, providing a closed loop through which the balls recirculate when the races are displaced axially relative to each other. The bearing balls resist radial displacement resulting from torque loads.

  • Efficiency - coefficient of friction .007 maximum
  • Hardness - minimum of RC 56 in ball race
  • Lash - 005 inch maximum standard play perpendicular to rotational axis

Precision Rolled Ball Splines 0.375 in to 6.000 in Diameter Inner and Outer Spline Races

  • Offers high speed, anti-friction linear motion under high torsional loads
  • All units available with and without keyway
  • All sizes stocked for quick delivery

We have multiple Ball Spline options that are available to view in the downloadable brochure – please contact us to discuss your requirements.


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Eve Hanford

Internal Sales Manager

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