Grizzly G4003G conversion

[Digger873]

Hey guys,
Im working on my latest project, converting my manual lathe to cnc. My first obstacle is what to use for a spindle motor.
Ive been looking at all the choices, 3 phase with vfd, AC servo, and this, https://www.servomotorkit.com/product-p ... or-upgrade.
This seems like exactly what I want with a controller that can be controlled with the acorn, brake, reverse ect.
The only thing is its 120 volt not 220 and I think it will work great, it will bolt right on to my lathe.
I know 220 v would be better, Ie draw less amps, run cooler, but is there something Im not thinking about that would keep it from being a good choice.
Any thoughts?
Thanks
Jared

[Gary Campbell]

Not just 230v, but 230v 3 phase, with a vfd that will accept single phase input. The only way to go, and usually less than a servo

[Digger873]

I would agree with the 3 phase and vfd normally being cheaper, however not in this case. The link is to a servo motor with a controler and timing gears and belt for $444.00 that will bolt right up to my machine. I dont think I can beat that price, unless I buy the cheapest chinese motor I can find, and then do the work of making it fit my machine.
Jared

[suntravel]

I would agree with the 3 phase and vfd normally being cheaper, however not in this case. The link is to a servo motor with a controler and timing gears and belt for $444.00 that will bolt right up to my machine. I dont think I can beat that price, unless I buy the cheapest chinese motor I can find, and then do the work of making it fit my machine.
Jared

This is a servo for a sewing machine, without the bolt on parts 100$ on Ali...

Uwe

[Digger873]

Does that mean it wont work, or I shouldnt use it?

[suntravel]

They work, there are lot of low buck conversions with these, but I think 340$ for the other parts is too much.

I would use a JMC or Leadshine servo and make the adaption my self.

Uwe

[Digger873]

Yeah I understand, however leadshine in the us, for a comparable size starts at 600 and JMC doesnt have a US dealer. Im a little apprehensive about import taxes, I went to Ali and that size motor was about 250 + shipping and taxes, had everything written in chinese ( which I cant read),and had to wait 10 days, if it doesnt get held up in customs. I did find out though that I can get that sewing machine motor in 220 from this guy.
Do you think it would be a bad choice?
Thanks
Jared

[suntravel]

I do not think the driver accepts 0-10V for rpm control from Acorn.
A CNC with only spindle on/off is not the best idea.
Also, If you want to use rigid tapping, feed/rev an encoder 1:1 on the spindle is required.
For the size of this lathe, a 1500W AC Servo with 0-3000 rpm would be a better choice.

Uwe