Sorry should have given some more information, I turn the machine on at the rear cabinet and some fans start up. then I press the green on button and the fanuc screen comes up. The noise starts when I press the green button again. Then stops when I press the emergency stop.
The machine has no pneumatic or Hydraulics, and aside from the noise is working fine, still tool changes and runs with no errors.
i check on your machine and quick-read the manual. no hydraulics but tailstock is air operated
it is a motor making the noise
your machine has a few:
way lube automatic oiler
coolant pump
spindle motor could have a cooling fan added to it as many spindle motors need added cooling
tool changer motor
does your coolant motor work?
i am hearing a 1/3 hp to 1 hp motor making the racket , check for muffin fans that may be installed
No tailstock in my machine so not that, I took all the panels off and think the noise is coming from the spindle motor, running the spindle doesn't affect the sound in any way though, Think I need to take the internal sliding panels off to have a closer look.
Found the culprit, it is this spindle cooling fan, no obstruction and it only makes the noise at high rpm. Are these serviceable or do i need to buy a new one?
I got a replacement based on suggestion from electronics supplier RS in UK, had to modify mounting plate slightly but it is installed now and quiet as can be. Thanks for the help.