anyone interested in a d80d to 56c motor conversion

[Runner4404spd]

i'm swapping my d80d motor on my IH for a 3200 RPM 56c motor. i picked it up for a bout $60.00 and other than needing an adapter flange and a new keyway plus a shaft bushing it fits right on. if anyone is interested i can attach pics. this new motor will give me the higher RPM that i want. the only thing i don't get is the variable speed from the VFD but i've got the gear head and it should work just fine.

[wildcat]

Runner - yes, please post some pictures of your setup.

[Runner4404spd]

i will post some pics when i get home tonight.

[Runner4404spd]

heres some pics of what i built.





the bolts that bolt the motor to the head are captive between the motor and the bracket. granted its not ideal, but this will allow the use of more readily available 56C motors on these mills.

[Runner4404spd]

I've ran the 3450 RPM motor on the mill for a few days now and its alot nicer than the original 1725 RPM that was there. it also seems quieter than before. this might be an easier option for an upgrade on this mill other than converting a D90D to D80D specs.

[QSIMDO]

"new keyway plus a shaft bushing"

What did you have to do, widen the keyway?
And please describe the shaft bushing....you've got me intrigued!

[Runner4404spd]

the shaft bushing is sized to go over the motor shaft, and then fit into the mill head. basically i turned a bushing so it was a tight fit over the shaft.

the key way, is a stepped keyway with the small end fitting the motor and the large end fitting the mill head. i will try and show some pics tomorrow.

[DiscretePID]

Not sure if this is really easier than converting D90 to D80 spec, which only need the shaft turned down and a new keyway cut. D90 and D80 share the same B5 flange dimensions with the same bolt pattern.

However, D90 conversion is better suited if you want to go the 3ph VFD route. Single phase AC metric motors are not easily found here in USA. IF you want to stay single phase AC, 56C motors are much more common place.

Nice work. Looks like it will work very well for you.

[Runner4404spd]

This is my manual mill so i don't plan on using the VFD, which is exactly why i made this conversion to go to 56C. much more readily available motors and there for less expensive.

the only thing i now have an issue with is that the capacitors are turned so that i can use the power drawbar that bob warfield built. i will have to modify the concept to make it work. not really a major problem, but i thought i'd post it.

[KEYTEEM]

good idea for a higher rpm motor,inexpensive conversion, i can't figure why
it would be more quieter though, i will plan on doing this also .
thanks for your posts.

btw: how is the foaming of the gear box oil at the higher speed?

[Runner4404spd]

i'm running the recommend modil DTE light as was posted on aarons website. the head foams at 3600 but i don't think this is really that big of a problem. the head foamed when i had the 1700 RPM motor on there too.

[wildcat]

Runner - how warm does the head of your mill get with the Mobil light?