PLMNL0199 REV. J Effective Date: 08/05/21
27
FiberCUT
®
ST Operation Manual
4.5 Setting Focus to Tip Distance
This FiberCUT
®
cutting head is available in
four different focal lengths (75mm, 100mm,
125mm, and 150mm). It is equipped with
an adjustable focus lens cell, providing an
infinitely adjustable focus-to-tip setting.
The focus position must be customized in
every application in order to achieve the
optimum cut.
For mild steel applications, the focus is
generally set near the top of the
material.
For stainless steel and aluminum
applications, the focus is generally set
near the bottom of the material.
and
used to measure the set up distance for
each focal length.
Figure 28
nominal position of the lens holder for each
tip style with the focus distance
approximately 1mm outside the tip.
Note: If you adjust focus too far from
the tip, the beam may clip on the tip
orifice. Consider focus location, tip
orifice diameter and beam cone angle
when making this adjustment.
Note: Gas Jet Tips and Tip Retaining
Assemblies are interchangeable. The
appearance of your system may be
slightly different, but all of the
dimensions in Figure 30 still provide
a good starting point.
Figure 29
