bridgeport spindle motor replacement 1phase

[plascom]

bridgeport spindle motor replacement 1phase

does anyone know what motor can be put on this with out buying from bridgeport needs tobe 1phase. any help is always apreciated.

[HuFlungDung]

You could take the existing motor down to a motor rewinding shop. They can perhaps repair it, or look up a replacement that will fit.

[gus]

You are probably better off getting a phase converter. What are really nice are the VFD's that act as converters, variable speed and single phase input. YOu can also build a rotary converter very cheaply. Never buy a static one, junk

[smallplanes]

I also need a single phase motor for a bridgeport style mill. Or where can i buy a phase converter from? How can i make a phase converter?


Thanks
smallplanes

[murphy625]

A friend of mine asked me to get a replacement for him once for his mill..

The motor was a 3 phase but it didnt matter.. What made it special is that the OEM has the motor manufacturer make modifications to the motors design.
The only place you will normally find a replacement is the equipment manufacturer.

I do not like having to buy motors from the equipment manufacters because they jack up the price way to far.

Gusher Pumps are famous for this. Try replacing a motor on a Gusher pump. LOL

Are you trying to replace a burned out motor? Or just trying to make a 3 phase machine single phase?
good luck!

[machintek]

BPT had a single phase motor for its J head (step pulley) but it was very costly. Since this head was phased out a few years ago, I do not know if the single phase motor is even available. I do not remember a single phase motor for the 2J head being available but I will check. If anyone has the maintenance manual, they list replacement parts in a section in the back (including motors). I believe it is possible to find a single phase replacement motor for the old J head. Fife-Pearce has a lot of BPT motors and parts. They may also have one.
In simple terms, a rotary phase converter is a static phase converter running a 3 phase motor hooked in parallel to your 3 phase BPT motor. I have seen some very reasonably priced on Ebay. A static phse converter is a box that artificially creates a 3rd leg for starting a motor, then it drops out. Needless to say a 3 phase motor does not have the same HP running on single phase as it does running on three.

George W.

[smallplanes]

Do you think i might could have the motor rewinded for single phase? Do you think i could get a replacment motor for a mill sold by Harbor freight tool that is a single phase motor? I have not got the mill yet i'm thinking of buying it from a friend here in town. I think i can get it at a good price. Thanks for the help.

smallplanes

[Al_The_Man]

If you have a 220vac three phase motor right now, and only have single phase, then there is a couple of options, buy a VFD, this gives you the advantage of retaining the superior 3 phase motor and also having variable speed control, or go with a 1ph to 3ph converter, no speed control but you could run other 3ph equipment off it. For practicle purposes 3ph motor cannot be rewound for 1ph.
Al

[Al_The_Man]

Originally Posted by smallplanes I also need a single phase motor for a bridgeport style mill. Or where can i buy a phase converter from? How can i make a phase converter? smallplanes

This is a recent link where I posted the info from when I made my 3ph converter.
CNC and phase converters
Al

[smallplanes]

What is better a VFD or a rotary phase converter? Does anyone know where i might find a used one for a good price? What about the static phase converter are they not any good?

Thanks for all the help
smallplanes

[NBrigode]

I would only buy/build a rotary converter. Static are junk. We had one and it always seems to get hot. if your going to have a lot of equipment buy a bigger converter to start with. E-bay might have them. We stepped up from a 3hp static to 3hp rotary to 20+hp that we built. Bought a motor off e-bay and all the start and run capacitors also off e-bay. Our 20+ cost us about $300, which is cheap compared to $1,200 to 1,500 when you get that big. I want to say 250 is what we payed for the 3hp rotary. Its all is a matter of skill set, time, and the always deciding factor money.

Hope this helps,
Nick

[Al_The_Man]

Originally Posted by smallplanes What is better a VFD or a rotary phase converter? Does anyone know where i might find a used one for a good price? What about the static phase converter are they not any good?

The VFD gives you speed control if you need it, down side - one machine only.
Rotary converter, simple & cheap to build, no speed control but mutiple machines can be run off it, Load hp can be 1.75 x rotary conv hp. with largest motor being no larger than conv. hp.
Al