3 phase motor to 1 phase

[Bryan Cowing]

Can a 3 phase motor be rewound as a 1 phase?

[Randy in Dartmouth]

Likely not, since a 1 phase motor needs a centrifugal switch built into the housing. 3 phase motors doe not require this switch, hence the motor will not likely have any mounting means for the switch.

Call a local motor repair place and quote them the model number of the motor. They should be able to help.

[David in London]

Bryan,

A motor cannot be rewound for phase, only voltage. If you need to remotor something, call me at work. I have helped remotor a number of Unisaws, and other machines.

BTW, Sometime after Durham, can I come out for a visit and have you copy a broken chair leg on your General/Vega lathe setup for me?

Thanks,

David.

[jamie]

While you can not rewire the motor to run on single phase "phase convertors" are available to run the motor on single phase, however it may be cheaper to replace the motor, any good motor shop can help. Also look on friday and the post by Ban, it has some very good info.

Jamie

[Bryan Cowing]

A vist is OK but the work will have to wait till Sept. Moving to Woodstock in 3 weeks and right now up to the rafters in kitchen cupboards for the new house.

[Bryan Cowing]

I seen a 3 phase radial arm saw for sale, was wondering if it could be converted easily.

[Steve In Kemptville]

If you are really serious about this saw you might be able to get a single phase replacement for it with our cyclone order. I can get you any of the Leeson motors in the catalog at 50% off the listed CDN price but only with the cyclone order which will be likely placed within a week or 2. Eg; Leeson 120026, 1.5HP 145T frame, TEFC motor = $499 list, your price $249.50 plus shipping if required.

If the 3Ø motor has a frame size on the tag (56, 145, 182 etc...) you should be able to match it up no problem. The only kicker is if it's a special mount motor or something.

Just thought it might interest you.

Regards,
Steve.

[Greg in Toronto]

That will likely be the big problem finding a motor to fit. On the radial arm saw, the motor is mounted on the powerhead that slides on the arm. My guess is that the motor housing and mountings may be very specific. However, this is aguess since I've never tried to replace a motor in one.