jkopel
Stainless
- Joined
- Apr 3, 2010
- Location
- Seattle, Wa USA
I am in the midst of rebuilding a B&S 510.
The machine saw a lot of heavy use, and either the previous owners were very creative or it might even be some kind of franken-grinder since there some odd things about it.
Anyway, the motor it came with was a GE TFEC 480V 3450RPM 1HP 3PH 56 frame with a resilient mount.
The shaft on the motor is bent (how the hell do you do that in a grinder?).
I want to run it off a VFD and am looking for a suitable replacement.
The grinder uses o-ring style drive belts, and the motor placement on the moving spindle head means I have to stay close to the original mounting style.
My specific questions are:
1. Does the resilient mount make a big difference? I have found a few motors locally that would work except they are normal rigid 56 mount without the rubber rings.
2. Does the motor need to be balanced, or will the factory balance be sufficient (I know this one will be hard to answer).
3. Should I even consider single phase?
4. The original spec was for 1HP but I have found what looks like a good choice but it is 2HP. Is there any reason I should not upsize the motor?
All help and advice appreciated.
Thanks!
Josh
The machine saw a lot of heavy use, and either the previous owners were very creative or it might even be some kind of franken-grinder since there some odd things about it.
Anyway, the motor it came with was a GE TFEC 480V 3450RPM 1HP 3PH 56 frame with a resilient mount.
The shaft on the motor is bent (how the hell do you do that in a grinder?).
I want to run it off a VFD and am looking for a suitable replacement.
The grinder uses o-ring style drive belts, and the motor placement on the moving spindle head means I have to stay close to the original mounting style.
My specific questions are:
1. Does the resilient mount make a big difference? I have found a few motors locally that would work except they are normal rigid 56 mount without the rubber rings.
2. Does the motor need to be balanced, or will the factory balance be sufficient (I know this one will be hard to answer).
3. Should I even consider single phase?
4. The original spec was for 1HP but I have found what looks like a good choice but it is 2HP. Is there any reason I should not upsize the motor?
All help and advice appreciated.
Thanks!
Josh