Electrical motor parts PLEASE!!!

Balance shouldn't be much of an issue for such a massive rotor in a low speed (1725 or 3250 RPM) motor.

I'd consider repairing the original 30 year old part as the best option, compared to making a new one. Weld it, braze it, and check for level on a tip/pivot-type balance checker. Add some epoxy putty (scratching a clean spot) to the lighter side if you must try to balance it. An alternative method would be to drill some holes on the heavy side.

WB ...............

Electric motor repair shops routinely replace fans. The vast majority on small motors such as yours are plastic and bi-directional. You can get an OEM fan if you have something special, or a generic aftermarket brand for the common motors. Any motor shop should have what you need on the shelf or no more than 2 days away. Have you called a motor repair shop?

Randy

"Chris" wrote: (clip) I don't want to weld

^^^^^^^^^^^^^ I once balanced a fan by letting it fall to the heavy side on its own bearings. The bearing friction can be overcome by holding a vibrator (like an engraving tool, for example) against it. The vibration will cause the rotor to slowly drift until the heavy side is down. Alternatively, you could support the armature/fan on a pair of knife edges to minimize friction.

Some kind of toolroom grinder or Dremel type tool ought to be able to take off aluminum to smooth it up and balance it. Even if it's not perfect, it might get you going until you can locate an exact replacement.

Sometimes you can just remove the fan altogether and replace it with a separate exrernal blower having it's own power source. This is routinely done with motors modified for inverter service.

How much did you pay for the motor?

GWE

I checked with several of them, none of them had the ID of the shaft that I had, its an odd ball at 1.350" and its a late 70's motor so they want to replace it with GE s*it not some generic crap, damn it! I will keep trying, thank you!

I thought about that, and that is a god choice, but I am waiting for a reply from GE employee maybe they might have some thing!

Thank you

Good ideas, but I want to replace it now since the thing is crack all the way around in in VERY bad shape!!!!

Thank you

I paid nothing for it, just shipping from Portland to BC,

Thank you

I checked with several of them, none of them had the ID of the shaft that I had, its an odd ball at 1.350" and its a late 70's motor so they want to replace it with GE s*it not some generic crap, damn it! I will keep trying, thank you!

Most good motor shops have a 9" Atlas lathe, or equal, setup with a special pair of Jacobs chucks, for turing commutators.

Given that they probably already have a lathe, it should be little difficulty to bore and ream a generic fan to the special shaft diameter your GE motor requires.

Peter, I am a machinist by trade so boring and reaming is not the problem, I just didn't want to spend the 10$ they wanted for it and having to screw around with it, I will spend an extra 20$ to just SLIP it onto my old shaft and away I go, Yea no big deal I could bore it then nicely ream the rest out by hand or what ever for a nice snug fit!

Thank you

You can buy a tool that cuts the shaft as the motor turns.

Would this "tool" happen to be a lathe?

Thank you

If it fits the application, you could use an external fan. Just rig a centrifugal blower to a sheet metal adaptor and feed the air in one of the ventilation holes. Block all other holes on that side of the motor, so the air is forced through the stator and rotor. Of course, if this is a TEFC motor, you really need the inside fan.

Jon

You bet, simple and easy, will do it if I need to!

thank you

I have a hydryic pump motor i did not put the fan back on yet i set a box fan there . Up in canada were you are just set it out side ,got to be cold there?