I have the HF 12k winch, it pulls about 40 amps no load, a bit over 75 amps. half loaded. I believe run time is like 15 minutes on, 45 minutes off.
that said for light loads it doesn't get very hot, but it is slow for this type of work.
Better check your manual again, the duty cycle on the HF 12k winch is something like 45 SECONDS pulling and 15 minutes resting...
Pretty poor for trying to log with...
SR
I agree with SR. The duty cycle is 5% on the Harbor Freight 12,000# ZXR. From the manual on their website: "45 seconds at Max Rated Load; 14 min, 15 sec rest". Of course, it's rare the OP would be pulling at Max rated load (especially with that tractor - I own the almost identical TC33D), but it does give an idea of the limitations of these winches.
The current draw estimates are also off. From the same manual:
0# line pull, it runs 15.5 FPM and draws 101 Amps
3,000# pull: 9.5 FPM and 173 Amps
6,000# pull: 7.4 FPM and 244 Amps
9,000# pull: 5.7 FPM and 311 Amps
12,000# pull: 4.0 FPM and 359 Amps
These tractors have a 40 Amp alternator, and a moderately sized starting battery. Extended pulls or repeated pulls without plenty of time in between to allow the tractor to recharge the battery are a good way to kill the battery.
These winches are good for recovering a stuck tractor, or occasionally moving logs short distances, but you'd need to be very careful - and very patient - if you were trying to use this regularly for logging. Even at a relatively light 3000# pull, it would take 5 minutes of winching to go 50 feet. Durng that time, you would be drawing more than 4 times as much from your battery as the alternator was putting back in (assuming you kept your RPMs cranked up to get full alternator output).
If a 3 pt hitch logging winch is not in the cards (tough to justify for just a few logs), I'd be more inclined to just hook up a length of cable or chains and drive the tractor to pull it out. A cable with a snatch block would let you redirect the pull, if you did not have time to drive straight away from the logs: for example, pulling a log perpendicular to a trail by driving down the trail.