We just got a 1990 Puma 10S lathe with a Fanuc
15 controll. Overal state is good, it has about
9500 cutting hours and guides are fine.
The Motor of the Z-ax is a Fanuc 10S-2000 rpm
(same name as the Puma by coincidense) and it is making
a lot of noise, vibrations in the Z servo make the machine noisy.
Accuracy is fine but when you feel the servo it is really
vibrating unlike the same motor on the X-ax.
There are no error messages and accuracy is good.
I hope someone can give me some ideas about what
to check. I already changed the servo gain from 3000 to
1800 but this didn't make any difference.
Thanks
Richard