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- Aug 29, 2013
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We had our Memorial Day cookout yesterday because rain was forecast for today. My son-in-law was over with my daughter and grandkids. He had asked me about a wood turning lathe before because I have one set up and about three or four more in various states of disassembly. So I showed him an old PowerKraft lathe and some chisels, centers, documentation, safety glasses, etc. Everything he needed besides a chuck and a motor. And I told him where to get the chuck and that I might have a motor for him.
My SB 9A has a 1/3 hp GE motor. I have a 1/2 hp GE motor that I was going to replace it with. So today I hauled the 1/2 hp motor out, lubricated it, and ran it for a bit. It seemed to be working fine. It also was connected to a drum switch and ran in reverse, which my current motor didn't do. Off came the old motor. Now I have finally learned to check things out if I can before I install them. So I ran the motor forwards and backwards for about 10 minutes. It started smoking but I knew that it was just burning oil. I figured I had gotten a little sloppy and it was just excess burning off.
Well it wasn't. After I ran it some more I decided to look in the gits. They were really hot. I got my non-contact thermometer out. The case of the motor was over 200F and the inside of the motor was over 400F.
Anyway, I left it on the work bench with a fan on it to cool off. It was too hot to mess with. I'm guessing it might be some kind of bearing problem. But I figured I'd have a beer and ask all you folks if you have any ideas.
The particulars from the data plate are:
Model: 5KC63AB776
Type: KC
PH: 1
HP: 1/2
CYC: 60
Amp: 7.0
Volts: 115
RPM: 1725
Temp Rise: 50 degrees C.
GEJ: 1404
Time Rating: Cont.
Locked KVA per HP: K
I'd appreciate any insights that you can give me.
PS: I found this thread on the Home Machinist forum:
http://www.chaski.org/homemachinist/viewtopic.php?f=42&t=93067
My SB 9A has a 1/3 hp GE motor. I have a 1/2 hp GE motor that I was going to replace it with. So today I hauled the 1/2 hp motor out, lubricated it, and ran it for a bit. It seemed to be working fine. It also was connected to a drum switch and ran in reverse, which my current motor didn't do. Off came the old motor. Now I have finally learned to check things out if I can before I install them. So I ran the motor forwards and backwards for about 10 minutes. It started smoking but I knew that it was just burning oil. I figured I had gotten a little sloppy and it was just excess burning off.
Well it wasn't. After I ran it some more I decided to look in the gits. They were really hot. I got my non-contact thermometer out. The case of the motor was over 200F and the inside of the motor was over 400F.
Anyway, I left it on the work bench with a fan on it to cool off. It was too hot to mess with. I'm guessing it might be some kind of bearing problem. But I figured I'd have a beer and ask all you folks if you have any ideas.
The particulars from the data plate are:
Model: 5KC63AB776
Type: KC
PH: 1
HP: 1/2
CYC: 60
Amp: 7.0
Volts: 115
RPM: 1725
Temp Rise: 50 degrees C.
GEJ: 1404
Time Rating: Cont.
Locked KVA per HP: K
I'd appreciate any insights that you can give me.
PS: I found this thread on the Home Machinist forum:
http://www.chaski.org/homemachinist/viewtopic.php?f=42&t=93067