The NB stroke ball spline consists of a nut and a shaft both with raceway grooves . Since the retainer in the nut is equipped with a ball pocket, the steel balls, (rolling elements) do not contact each other, which allows for a smooth linear motion.

Structure and Advantages:

• High Load Capacity and Long Travel Life
• Wide Variety of Configurations
• High Accuracy Torque Transmission
• Ease of Additional Custom Machining
• High-Speed Motion and High-Speed Rotation

In a linear motion, however, the retainer moves a half of the travel distance. Therefore, the linear travel stroke is limited up to twice as long as the distance that the retainer can move in the nut. For normal operation, it is recommended to consider 80% of the maximum stroke shown in the dimension list as an actual travel distance.

Standard Ball Spline

Stroke Ball Spline