For 8 inch diameter material ? yes, probably.
Would you REALLY be feeding 8 inch material ?
Most of us can find better use for that size stuff.
See my earlier post where I speculate on power requirements for 6 inch vs 8 inch material (all other factors being about equal).
It is around 14 vs 25 HP.
EDIT: Ooops, just noticed that post was also a reply to your same post as this reply is responding to.
That was last night, I'm not FULLY awake yet.
:END EDIT
I see little/no problem with a $2750
chipper with an 8 inch capacity that is tractor power limited to 7 or 7 1/2 inch material.
Things don't get any "better" by limiting your choice to a
chipper with LESS maximum capacity (-:
A side thought on the hydraulic drive.
Once you have another source of hydraulic power you have added opportunities.
Obviously a
chipper occupies the PTO and it seems there are times where a hydraulic winch would be SO HANDY for dragging brush to the
chipper. I am thinking a couple of hoses, a valve, some simple way of attaching a winch to the
chipper's lower frame and you could have a very nice set up.
MOST of the time I would be chipping OR dragging, so this would not be an ADDITIONAL power requirement.
Of course, this would depend on the pump capacity.
I doubt one could run a 20K winch with any useful sort of line speed (-: