looking for a milling machine

[brenweld]

im on the look out for a single phase milling machine second hand am i better looking for a 3 phase and converting it to single i dont mind travelling for the right one any advise would be great

 

[madkayaker]

how big a supply you got?

 

[brightspark]

im on the look out for a single phase milling machine second hand am i better looking for a 3 phase and converting it to single i dont mind travelling for the right one any advise would be great

depends on what size u are after and if the machine is belt drive and there enough room to acomondate the larger single phase motor it wont be a problem. rule of thumb is smaller machines fetch good money and hard to find larger 3 phase machines are abundant and cheaper and can be run of a phase converter

 

[brenweld]

is the converter harder on electricty than a normal single phase 4hp motor

 

[madkayaker]

depends on the size not sure how big motor millers normal have on but worth checking first

 

[brightspark]

it depends what converter u are using ? static / rotary/ or inverter

 

[stormin]

Get yourself an inverter, variable frequency drive type, as big a rating as you can.
I've got one rated at 3hp, set-up to run three different machines, mill, lathe and pillar drill just not all at once.
Almost infinitely variable speed and less messing with belts.

 

[brightspark]

Get yourself an inverter, variable frequency drive type, as big a rating as you can.
I've got one rated at 3hp, set-up to run three different machines, mill, lathe and pillar drill just not all at once.
Almost infinitely variable speed and less messing with belts.

is your inverter 415 v star stormin or 240v delta used on dual voltage motors

 

[stormin]

is your inverter 415 v star stormin or 240v delta used on dual voltage motors

240V delta. I had to rejig the wiring on the motor in the Colchester student lathe and Meddings Pillar drill.
Milling machine required a motor change for the main drive and internal surgery for the feed and coolant motor.
I've got the inverter output running to a five pin three phase socket and just plug in the appropriate machine I want to use at the time. Stop/Start, Forward/Reverse and speed selection is run off a small wireless remote handset.

The 415 advanced inverters are better but much more expensive.

 

[brenweld]

ok what would a inverter converter roughly cost

 

[brightspark]

240V delta. I had to rejig the wiring on the motor in the Colchester student lathe and Meddings Pillar drill.
Milling machine required a motor change for the main drive and internal surgery for the feed and coolant motor.
I've got the inverter output running to a five pin three phase socket and just plug in the appropriate machine I want to use at the time. Stop/Start, Forward/Reverse and speed selection is run off a small wireless remote handset.

The 415 advanced inverters are better but much more expensive.

rite i use the static converter at 415v on my mill : because it has a 415 v transformer to run the contactors and i couldnt be a r ./././ed to alter the wiring and change the contactor coil and change the links on motor to run on 240 delta

 

[stormin]

rite i use the static converter at 415v on my mill : because it has a 415 v transformer to run the contactors and i couldnt be a r ./././ed to alter the wiring and change the contactor coil and change the links on motor to run on 240 delta

Using an inverter you should bypass the switches and contactor anyway and run wiring straight to the motor. Inverter controls start-up and over temp/current limits etc.

 

[brightspark]

Using an inverter you should bypass the switches and contactor anyway and run wiring straight to the motor. Inverter controls start-up and over temp/current limits etc.

i know as said cant be a././sed plug and play

 

[fully floating]

Here is one for ya click , not sure if its what your after a few come up on that site.

 

[fully floating]

If your looking a single to 3 phase converter here is one for sale

 

[R BEADLE]

google fairfield auctions , there's a place in middlesbrough often sell second hand bankruptcy stock in engineering .

 

[graffian]

If your looking a single to 3 phase converter here is one for sale

Bit expensive. I bought all new parts and it cost around £200 to make mine.