WTB: bridgeport conversion to 220v single phase

[AlexBanich]

I am looking to convert a Bridgeport from three phase to 220v single phase. If you have what I need to do it that would be great!

 

[Winmac]

If you are looking for an out of the box solution, He is one option. Google may turn up more, i recall seeing a kit where you supply the motor.
Single Phase Conversion Kit for 1 HP Bridgeport Motor (NOT SHOWN)

 

[CountryBoy19]

Why not get a VFD for it? You can get a VFD that is powered by 220 single phase and drives your 3 phase motor with variable frequency (variable speed). This is great because it adds variable speed drive if your machine doesn't already have it. Still beneficial if you do have variable speed drive because if you just want a really quick slow down or speed up, this will do it much faster than cranking the speed adjuster.

 

[gwilson]

Definitely do the VFD conversion. They have gotten so cheap,I wish I had more 3 phase machines to put them on. VFD's do need to be shielded inside metal boxes if you listen to the radio,though,as they interfere with radio when running.

 

[deadend]

Horsepower

Someone told me if you use a VFD to convert from 3 phase to ploy phase you loss horsepower don't know if it is true.

 

[AlexBanich]

OK thought about the vfd solution but don't have variable speed and only have one 220v line coming in to the garage so I need it to power all my toys.

 

[Winmac]

I dont understand your last reply?
Here is a little video explanation of vfd use as a phase converter YouTube - Broadcast Yourself.

 

[CountryBoy19]

OK thought about the vfd solution but don't have variable speed and only have one 220v line coming in to the garage so I need it to power all my toys.

I think you may be misunderstanding what a VFD is.

A VFD is a small box that mounts on your Bridgeport in the electrical circuit "right before" the motor & taking the place of your Forward/Off/Reverse switch. You do NOT need a variable speed mill to have a VFD because the VFD (small electrical box) is what makes the speed vary. Essentially, this small box is a phase converter that has additional capabilities in that it can also vary the speed at which your motor runs in addition to other things depending on what model VFD you purchase. You can get VFD's that have a 220 VAC 1-phase input and 220 VAC 3-phase output. Think of a VFD as a static phase converter that has added benefits.

It does not make a difference if your mill has a variable speed head on it, and the VFD does not effect any other machines that you would run on 220 VAC 1-phase. You run them all the same as if you didn't have the VFD. That means if you planned to have plugs on them and plug each machine into your 220 outlet as you need each one, then you will still do that... the mill just has an add-on "phase converter" on it.

 

[NewbieMachinist]

FS: VFD 1/3 phase in - 2hp 3ph out

If you decide to buy one this one is still for sell.

I bought it 8/2011, had it professional installed to my Bridgeport 2hp mill. I have the invoices. I had it removed 12/2011. There's no parameter to put the cooling fan on auto, it runs all the time, to noisy in a one man shop. Their engineer approved the bigger then required "Braking Resistor", I couldn't figure how to get it to work. I'll cover shipping. Guaranteed not DOA

VFD on eBay---312
Brake resistor---35
Intereface-ext--42
Keypad --------51
Cable----------20
-------Total: $460______ASKING__ $230.00(Reduced)
PM or email: tim @ timbauer . org(remove the spaces)


WEG CFW08 Variable Frequency Drive - 230V 1 or 3 phase
input/output - 7.3 amp 2hp output
WEG INTERFACE EXTENSION PARALLEL Keypad/w 6.6ft Cable

Picture

Aluminum Housing Braking Resistor Resistance 300W 40ohm


WEG CFW080073BDN1A1Z VFD C80006 - CFW08 Variable Frequency Drive - 230V 1 or 3 phase input/output - 7.3 amp 2hp output

 

[bjorn toulouse]

OK thought about the vfd solution but don't have variable speed and only have one 220v line coming in to the garage so I need it to power all my toys.

Your 220V line will power a VFD, which will convert the single phase input to 3phase output for the specific machine the VFD is mounted on.

I have one single phase 50amp/220V outlet in my garage. My lathe (5HP) and my mill (1HP) each have a VFD mounted to allow their 3 phase 220V motors to operate on single phase 220V. As I use only one machine at a time, I simply plug in the lathe or the mill and get to work. My Lincoln SquareWave 255 TIG welder also gets to use the outlet (it's a single phase machine) at times.


Rex

 

[tlslights]

VFD is really the best solution..

 

[AlexBanich]

Yes I do agree. I don't know what I was thinking I was space cadeting severely there. NewbieMachinist do you have any instruction manuals?

 

[NewbieMachinist]

Yes, it was in that post. I have every thing it came with. There tech support was great.

https://skydrive.live.com/redir.asp...E002912CB3441268!382&authkey=!AJYlU7g1tfOTE7I

 

[rich9389]

First want to say great forum. I am a newbie here but have been lurking for awhile. I have just bought an older J head Bridgeport that I was thinking of converting to single phase which is what my lathe has already be converted to. But after reading this, a VFD would be a much better choice. Thanks for the information.

Also NewbieMachinist, did you sell your drive? If not I may be interested in it.

 

[LFEngineering]

Although you loose a bit of power why not a static phase converter? Static Phase Converter Information Page - Phase-A-Matic, Inc.

 

[t.jones]

Machines are 575 volts in Canada, making a 220 conversion more appealing---Trevor