Metal shaft SPR

ball splinecompactcross

The NB ROTARY BALL SPLINE can be used for both rotational motion and linear motion. The applications include SCARA robots, the vertical shaft of assembly equipment, tool changers, and loaders, etc. You can use NB rotary ball splines in many applications requiring linear and/or rotational motion, such as automatic tool changers, SCARA robots and pick-and-place assembly equipment. Their unique design features a spline nut with a rotating portion that moves via cross rollers. This configuration offers many advantages, including high accuracy and a substantial reduction in installation costs. Ball Splines Presentation Video Please play the video to watch NB’s Ball Spline and Rotary Ball Spline Series. Key Features At-a-Glance NB ball splines provide linear and rotational motions using a combination of spline nut and rotary cross roller bearing design. 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. Notable features of this type of design include: Increased load capacity The rotary to linear mechanism of NB ball splines can typically handle 10 times the load of conventional ball bushings, which only maintain a single point of contact at any given time. Greater travel life By utilizing the large ball contact surface of arch-shaped grooves, travel life is extended by up to 700 times (compared to conventional ball bushings). Fewer number of parts Similarly, by providing both linear and rotational motions, NB ball splines effectively perform the work of two components.