Originally Posted by
HEAVYDADAMAN
I have a VF 5 that has a high and low speed gearbox and runs at 10000rpm max, in low gear there is no noise. But when I run it in high gear only between 3000 rpm & 6000 rpm it makes a horrible noise. The funny thing is that when I use the spindle override and bump it up to 10% higher the noise goes away. the technician reckoned that one of the teeth on the high gear range was maybe chipped and that was what was causing the noise, but I am not convinced with his theory. Does anybody have a suggestion.
Noise usually occurs in low gear not high. High gear is straight through. I would look for other problems than the gear box.
Mike
Two Haas VF-2's, Haas HA5C, Haas HRT-9, Hardinge CHNC 1, Bother HS-300 Wire EDM, BobCAD V23, BobCAD V28