Im having a problem on a NEW (install date jun18/2018) lathe. with 0iTF and Beta combo drives (spindle and 2 axis drive plus power supply in one unit) traditional belt drive spindle motor.
The dealer has never seen this before. Nor I.
The sub side spindle motor is doing this intermittent thing where it wont decel to a complete stop, but only it seems to do it from one direction. And only when thoroughly warmed up.
It will decel normally down to about 200~300 rpm then it kind of just starts coasting to a stop. It did this on the first job ran on it. When the service guy came, it wouldn't reproduce the issue. We are now running the lathe steady 24/7 and it is doing it on every part, twice.
https://youtu.be/8Uc68vQDOEc