Working range:
For workpieces, which must

1. not be concentric to the
   outside diametre.

2. not loose their position.

3. have a good roundness.

4. very small centres.

Operating Sequence:
Insert the workpiece
- the clamping rests close
- the grinding heads move towards the
workpiece. The grinding point dressed to
true geometric shape plunged into the
center hole and makes contact with the
center of the workpiece under slight
pressure until the second grinding point
makes contact with the counter-center.
– As soon as the operating pressure is
obtained the grinding motors begin to
run. After a predetermined period they
are switched off, and the infeed slides
with their grinding heads return to their
inital position.

Accuracy:
Grinding accuracy as measured at the center hole is 1 µm and better.