Hello at all,

we have a MIKRON VCE 750 which is about 15 years old.
There is one problem: when milling for a longer period of time just with gear stage 1 (up to 1200 rotations), and if I'd like to go higher rotations with another tool, it stops after the tool change at WZ-position and just turn around the spindle???
As if it would like to oriantate the spindle.
I guess the control valve, which switches by air pressure the gearwheel for both reduction stages, could be defect.
What do you think?