NB Rotary Ball Spline
April 1, 2026
The can be used for rotational motion and linear motion. Popular applications include SCARA robots, the vertical shaft of assembly equipment, automatic tool changers, and loaders, etc.
NB's rotary ball spline has a nut that rolls on the ball spline shaft, providing the linear and rotary motion and sub-millimeter accuracy.
Splines feature arch-shaped grooves on 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.
A ball spline's forte is the transfer of torque. In addition, it can even be customized so cabling can run the length of the robotic arm by using a hollow shaft ball spline.
Ball splines with cross rollers as opposed to balls in the rotary motion increase load rating without increasing size.
For more information contact:
NB Corporation of America
930 Muirfield Dr.
Hanover Park, IL 60133
800-521-2045
nb.c@nbcorporation.com
www.nbcorporation.com
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