SPR Rotary Ball Spline
The NB Rotary Ball Spline can be used for both rotational motion and linear motion. The NB Rotary Ball Spline nut consists of a spline nut and a rotating portion using cross-rollers. 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.
Features:
Reduced Number of Parts
Because of the single-body construction consisting of the rotating element and the spline element, the number of parts is reduced so that the accumulated errors are also reduced.
High Rigidity
The use of cross rollers and 4-row ball circuit structures provide high rigidity despite the compact design.
Compact and Light
The cross rollers are directly attached to the ball spline's outer cylinder, resulting in a compact and light design.
Substantial Reduction in Installation Cost
The use of cross rollers keeps the housing thickness to a minimum, making the ball spline light and easy to install.
High Accuracy
The cross-rollers ensure accurate positioning in the rotational direction.
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