Spiral
A spiral movement can be facilitated by rotary and linear motions. A combination of these motions allows accurate and sophisticated positioning. THK's "Ball Screw Spline" has both Ball Screw and Spline nuts on a single axis to provide both rotary and linear motions from one compact design.
Applied spiral motion
Scalar robots
![Scalar robots](./sites/default/files/thkcom/images/ja/products/move/scrobot.jpg)
Scalar robots are used to transport and position workpieces within small areas. LM Guide systems are crucial for their high accuracy in both stroke movement and rotation on the Z axis, where high speed and low runout are essential.