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Turret mill

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Meh I looked at it.

I bid on it but did not feel I want to go for more.

The machine has a two speed 380v motor - so replacing it is out of question. It should run fine at 440v at 60Hz.

DRO is broken.

I considered fixing it a bit and trying to sell for $2000 with maybe initial list of 2500. It would be a hard sell given the voltage. I have single phase transformer needed but not 3ph one.
 
Just curious. Is a 380V motor of that era & bolt pattern miles more difficult to retrofit a suitable power 3-phase motor for retrofit? Need to add VFD of course, but I mean just the motor aspect itself? ps - the blue handle makes me very suspicious LOL
 
Tom Kitta said:
Meh I looked at it.

I bid on it but did not feel I want to go for more.

The machine has a two speed 380v motor - so replacing it is out of question. It should run fine at 440v at 60Hz.

DRO is broken.

I considered fixing it a bit and trying to sell for $2000 with maybe initial list of 2500. It would be a hard sell given the voltage. I have single phase transformer needed but not 3ph one.
Click to expand...
That motor has to be replaceable with a 220/440v 3 phase motor, no?

I wont be surprised to see it listed on Chris Wood's (The Calgary Flipper) FB Marketplace very soon...
 
PeterT said:
Just curious. Is a 380V motor of that era & bolt pattern miles more difficult to retrofit a suitable power 3-phase motor for retrofit? Need to add VFD of course, but I mean just the motor aspect itself? ps - the blue handle makes me very suspicious LOL
Click to expand...

I agree. Not really that hard to make a motor adapter plate. In fact even possible to make a double plate that positions the business end of the motor in the same place. Biggest issue is often the length and diameter of the motor shaft.
 
Susquatch said:
I agree. Not really that hard to make a motor adapter plate. In fact even possible to make a double plate that positions the business end of the motor in the same place. Biggest issue is often the length and diameter of the motor shaft.
Click to expand...

No. Its a TWO SPEED motor not two voltage motor.

It switches from being a two pole to four pole motor and has two speed ranges - in EU its 1200 and 2500 rpm.

Its similar concept to Swidish drill press.

So next to impossible to replace apples for apples.

Come to think of it I should have replaced with single speed 1700 RPM motor and cut half of the speeds off - and then offer a VFD to get the other speeds.... BUT many people would see this solution a bit of a Frankenstein mill.

The frame is also not very popular - 100L - so yeah adapter plate and stuff...

Rest of the mill was not in so good of a shape as well - it would be just great for someone that uses EU stuff and already has European connectors - the member where we have meetings every year - he has Euro plugs and the mill came with Euro plug.

Oh and a switch from two speed to one speed motor and different voltage means almost certainly all electrical needs to be replaced or at least modified. Lots and lots of work. Its a project!

Chris may try to flip it but it will be hard - he is NOT into fixing or modifying machines.
 
A single speed 2500-3000 rpm 3 phase with a VFD cant replace this? It seems that other speed changes are done via belt?
 
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