Harrison M250

john andrews · 15-08-2009

Hi Arthur, I am a new member but I would like some advice on my Harrison lathe so here goes perhaps you can help me: I have recently bought this machine but unfortunately its 3 phase and I would like to convert it back to single phase, can anyone advise where I can get the electric motor and also single phase pump. also although I have the manual on it can anyone recommend a good book which would give you more ideas on what its capabilities are.
Thank you - John Andrews.

**Ross77** · 15-08-2009

Hi Arthur, I am a new member but I would like some advice on my Harrison lathe so here goes perhaps you can help me: I have recently bought this machine but unfortunately its 3 phase and I would like to convert it back to single phase, can anyone advise where I can get the electric motor and also single phase pump. also although I have the manual on it can anyone recommend a good book which would give you more ideas on what its capabilities are.
Thank you - John Andrews.

Hi John
Dont now if the following will be of any help but here goes...

Is your lathe cnc and therfore the spindle speed is controlled by the main controler? If not then most people seem the favour the 3 phase motor anyway and just get a VFD. (varible freqency drive)

I got one off the bay for £50 ish. That way you can have varible speed but still have full power. Irving and John S helped me a lot on this. may be ask them, or wait and see if they chip in...:whistling:

Might be worth starting a new thread as more people will see it then.

**irving2008** · 16-08-2009

Originally Posted by Ross77

Hi John
Dont now if the following will be of any help but here goes...

Is your lathe cnc and therfore the spindle speed is controlled by the main controler? If not then most people seem the favour the 3 phase motor anyway and just get a VFD. (varible freqency drive)

I got one off the bay for £50 ish. That way you can have varible speed but still have full power. Irving and John S helped me a lot on this. may be ask them, or wait and see if they chip in...:whistling:

Might be worth starting a new thread as more people will see it then.

M250 has 1.8HP, 1.3Kw motor AFAIK -but check as this is not definitive.

The one I bought was £35 - the guy I got it from had a few more but I checked with him and no more left :sad:. A full price one is £170 - 200 but they do come up regularly on eBay. A 1.5 or 2.2 kW single phase motor to replace the 3phase one is going to be about the same price so you may well be worth waiting for a while for an inverter to come up...

**John S** · 16-08-2009

Need to check in the morning but I'm sure I have some 2 Hp 3 phase foot mount 4 pole motors brand new here.

**irving2008** · 16-08-2009

Originally Posted by John S

Need to check in the morning but I'm sure I have some 2 Hp 3 phase foot mount 4 pole motors brand new here.

Yes, but JohnA wanted to go to single phase from 3phase...

I on the other hand am looking for a cheap 1hp/0.75kw 3phase for my mill... :whistling:

**John S** · 16-08-2009

Of course, he already has the 3 phase motor Duh, well it is getting late and the pop is taking effect.

Can't help with the 0.75Kw, just had to buy 8 new ones.

**John S** · 16-08-2009

Sorry 6 new ones, God this 2009 Asda scrumpy must have been a good year.
.

john andrews · 18-08-2009

Originally Posted by Ross77

Hi John
Dont now if the following will be of any help but here goes...

Is your lathe cnc and therfore the spindle speed is controlled by the main controler? If not then most people seem the favour the 3 phase motor anyway and just get a VFD. (varible freqency drive)

I got one off the bay for £50 ish. That way you can have varible speed but still have full power. Irving and John S helped me a lot on this. may be ask them, or wait and see if they chip in...:whistling:

Might be worth starting a new thread as more people will see it then.

Thanks Ross77 I have almost decided to go this route anyway it seems a lot less mucking about. Thanks for your help.
John Andrews:whistling: