THK's cage technology, which is the culmination of its technologies and know-how, has been applied to ball splines.
The use of a ball cage maintains the aligned circulating motion and enables high-speed operation.
The cage prevents balls from impacting each other and causing mutual friction, enabling low noise and low dust generation. They also allow for long-term maintenance-free operation by improving grease retention.
The torsional rigidity of the nut is ensured through a high-torque structure. Shaft rigidity is also improved by approximating the form of the spline shaft to a circular shape.