[AJD] need some help with PTO ???

[Robert E. Harris]

Howdy gang,

Happy new year to you all.

Have a chance to buy a very sharp PTO driven Chipper/Shredder for the farm.
Very nice little unit and a great price.
problem is I don’t have a great deal of background knowledge about PTO’s. I
know there are two standard speeds but how does one know what goes with what
if it isn’t clearly marked?
I have a JD 1070 and it’s PTO speed / rating is clearly marked in the
manuals. No problem there
.. but this little shredder unit has no PTO
markings, nor manuals.
is this a dumb question or is there something I need to know here?
The seller hooked it up and ran it for me on an ancient Ford but I have no
idea what the Ford PTO speed was, or if it is the same as mine.

The obvious question that I truly don’t know the answer to: are PTO ratings
critical and what would happen if they were mismatched?
OK guys, I’m humbled and ready for some schoolin’.  All answers appreciated.

Bobby