[jlmccuan]

I set up the VFD to max at 125hz instead of 75hz. It will go higher, but I'm not sure the spindle bearings are up to it. Once I check the bearing specs, I may take it up higher. I need to run it under a load for an extended period and check it with my heat gun.

[JTJT]

Jim-
We recommend a maximum of 120 Hz setting in the VFD.

Julian,
If you have loose splines e-mail me and I can send you a file on fixing it easily.

[julian wilson]

JT, thanks that's great.

My VFD is set on 60Hz so 120 Hz will do all I need from it.
I've had so many things to learn about that this was way down on my list.

As for my "loose splines", I just want to be clear that my "problem" is just that the Mill drive is noisy compared to the lathe drive which is really quiet and smooth. The mill drive is no noisier than my pillar drill.

The rattle clashes with my mechanical sensibilities as I feel that it could cause a wear problem in the longer term- but by no means am I suggesting that it will- its just that it makes me feel that way.
As I say, its no noisier than my pillar drill and that's lasted fine. Every time I switch that pillar drill on I think "why does it have to rattle so much?"

If there is a simple fix for the Mill spline I'd be glad to give it a go, especially if its one that others have done so I don't make silly errors.

JT, I'll send you an email.