[floydr]

If budget wasn't an issue then the me1004 would be perfect.

I picked up a tennant motor 24v-72v 100A continuous for cheap on ebay, It looks to be a slightly derated ME0709. That I am planning on using for my tractor conversion.
later floyd

 

[floydr]

Part #1200569
closet thing to a model number on the motor

 

[floydr]

Any opinions on this motor? Drive motor from 6000lb crown pallet jack. I'd like to run it at 48v but I'm not sure it's enough power.

If you overvolted it to 60v you would almost have 4kW 3720w about 5hp although I doubt it is a continuous rated motor especially with the overvolting.
later floyd

 

[floydr]

Probably an OEM for Tennant/Nobles Like the motor I have. Was wondering if you have a coupler in mind? How did the original motor drive the transmission?
Later floyd

 

[floydr]

if you do go with the floor polisher motor The shaft is most likely 3/4" 1/4" keyway looks to be a 1.25-1.5 inches long on mine with a 1/4"- 5/16" tapped hole in end of the crank too early in the morning here to accurately measure he shaft mine. Looks to be a nice motor
later floyd