Help setting up myford lathe

[fln742jParticipant @fln742j]

Hi guys

Just acquired a 1983 myford super 7 lathe

I’m having issues about best way to set up the 3 phase from 240v

Is there anyone near dunstable that could help get me on right track please

Thanks in advance

Neil

Fln742

[Nigel Graham 2Participant @nigelgraham2]

I take it you mean you bought the lathe with a 3ph motor that had been supplied directly from a 3ph mains supply.

To run it off 240 1ph it will need an inverter, and you can buy these with a variable-frequency speed control. (To enhance the belt drive and back-gear, not replace them!)

I fitted my ML7 with a complete motor + integrated inverter/ controller, from Newton-Tesla who sell those complete sets; but the electronics alone are available. I’m not sure if from NT but it’s worth asking.

[JohnFParticipant @johnf59703]

The other people to ask are Transwave aka Power Capacitors in Birmingham – easy to find on the internet

[Russell EberhardtParticipant @russelleberhardt48058]

If the lathe was used on 3 phase mains you will have to change the motor from star to delta connection to run it from a normal inverter.  Simply a matter of changing the connections in the terminal box.

Russell

 

[noel shelleyParticipant @noelshelley55608]

Depending on the Motor and if it’s wired star or \Delta and it being able to be reconnected to delta as to whether a VFD is the best option. Seldom does one see converters mentioned and their not cheap but Transwave is one name or the older Motorun can be used and save the rewiring or connection, just plug it in and check rotation. Tell us more about how it was used, was it on 415v 3 phase ?

Whilst having a variable speed is handy, it is not vital. Many do not have it, including me but my S7 has done sterling work for over 50 years.   Noel.

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