THK NS-A Series Precision Ball Screw/Spline

The THK NS-A Series is a ball screw and spline in one, with the Ball Screw grooves and Ball Spline groove crossing one another on the same shaft. Dedicated support bearings are directly embedded into the circumference of both the Ball Screw nut and the Ball Spline nut, giving the whole assembly a more compact, integrated design.

This series features a large lead and supports preload for improved rigidity and accuracy. It uses a rotary nut design, making it well suited for precision positioning tasks in ball screw applications. The NS-A Series has a DN value of 70,000 and is available in screw shaft diameters of 8mm, 10mm, 16mm, 20mm, 25mm, 32mm, and 40mm.