Rotary Ball Spline

Applications include SCARA robots, the vertical shaft of assembly equipment, automatic tool changers and loaders.

3 Rotary Ball Splines
Nippon Bearing
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Nippon Bearing

The NB Rotary Ball Spline can be used for both rotational motion and linear motion, and has a nut that rolls on the ball spline shaft — providing sub-millimeter accuracy every time.

Splines feature arch-shaped grooves on both the shaft and inner portion of the cylinder. These grooves approximate the diameter of the ball bearings, allowing them to carry a high load in a linear motion.

Popular applications include 

  • SCARA robots
  • Vertical shaft of assembly equipment
  • Automatic tool changers
  • Loaders

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