The tracing spindles of the GT22 series can hold highlighters, felt-tip pens or something else, with which workpieces can be labeled. The inserts for pens are available in different diameters. The aggregates can be taken up in woodworking machines and stored like any other aggregate in the tool changer.
The pen is spring suspended to avoid damagedes by tolerances in the workpiece surface. The sprung stroke is 8mm; the spring force can be adjusted from 5N-20N.
Also available are these units with a receptacle for keyed drag knives with which for example protective films can be cut on material surfaces without damaging the surface. Even without turning the C-axis it is possible to cut small radii.