Bandsaw ?

[gde]

Can a single phase motor be used to replace a 3phase motor in a bandsaw? Assuming the rpm's were the same that is. I have access to a nice 3phase bandsaw and don't want to go the phase converter route...yet. It really isn't a big deal as a single phase motor would cost more than the phase converter. I was just curious.

[tigman]

Yes it can, I have never figured out why people would pass on a great deal because it was 3ph considering how simple it is to switch motors. Scott

[enlpck]

Yes, but there are a few caveats

What is the motor power? Single phase motors are not available with high power ratings, a few HP being the max commonly available. (at 240V, a 5HP single phase motor draws about 18 to 20A)

Some frames are tough to find in single phase, and the power rating of the single phase will likely be lower than the three phase in a given frame size. This is one reason three phase is so common in industry-- they can be smaller than a single phase because they are of simpler construction

There are other possible issues, but these are a couple of the main ones

Can a single phase motor be used to replace a 3phase motor in a bandsaw? Assuming the rpm's were the same that is. I have access to a nice 3phase bandsaw and don't want to go the phase converter route...yet. It really isn't a big deal as a single phase motor would cost more than the phase converter. I was just curious.

[gde]

The 3phase HP is 2.0 and the rpm's are ~1720. I was concerned about the on/off power switches as well. I'll probably just try to get it and go with a phase converter, but I want to explore all options.

[hankj]

A 2HP singlephase 1720 RPM motor will be easy to find, and will do the physical job just fine. The issue will be wether or not the motor will mount in the same holes as the old one. If the NEMA frame matches, like enlpck said, then the mountings will match too. As far a switching, I'd guess you have a magnetic starter on the 3-phase unit. A single-pole toggle switch is all you'd need for the single phase motor, but you could still use just one pole of the magnetic starter and not change anything.

Hank

[Rio_Grande]

I pulled the 3 phase motor off of mine, and dropped one of the leads when hooking up the single phase. I then went to the power end of the plug and wired it to 220 while again dropping the same color lead. It runs fine right through the circuit board and all I had to do was bypass the magnetic starter. I had a wiring diagram and it just took a jumper lead to disable the starter. I paid 200 bucks for it and have made my money back a dozen times on it.


OH moror mounting issues... In order to get my american made motor to mount to the metric base I added a drilled spacer, drilled new holes in the old plate and lined up th pulley..... It worked for me.

[gde]

Thanks for the imput, but the saw was sold out from under me Oh well, I'll just keep looking! Thanks anyways.