Full Tree System—No one offers the
extensive product line, dealer network
and tough, purpose-built machines
like John Deere.
GRAPPLE 548G-III/
CABLE 540G-III
Rated Power @ 2,200 rpm129 SAE gross hp 96 kW171 SAE gross hp 128 kW177 SAE gross hp 132 kW
GRAPPLE 648G-III/
CABLE 640G-III
GRAPPLE 748G-III
Rated Power @ 2,200 rpm
with Torque Converter
Maximum Gross Torque
Maximum Gross Torque
with Torque Converter Option
Engine Type6.8 L Deere PowerTech
N/A185 SAE gross hp 138 kWN/A
32% @ 1,400 rpm/
407 lb-ft 552 Nm
N/A
28% @ 1,400 rpm/
521 lb-ft 706 Nm
40% @ 1,400 rpm/
618 lb-ft 838 Nm
™
6.8 L Deere PowerTech Plus™8.1 L Deere PowerTech
35% @ 1,400 rpm/
596 lb-ft 808 Nm
N/A
No matter what kind of terrain you work, there’s a John Deere G-III Series Skidder
that can be perfectly matched to your exact needs.
You know what you need out of your skidder. We can give it to you
with the widest range of models and options in the industry.
Choose the size, power, and options that best suit your job needs.
With a selection of engines, transmissions, axles, grapples, winches
and cab comforts, you can build the perfect skidder.
Standard decking blade has a
replaceable, weld-on cutting
edge of high-carbon material
for longer life.
A heavy-duty blade (optional on
the 648G-III, standard on the
748G-III) is wider at 9-ft 8-in
(2,95 m) with a heavier weldon cutting edge for more tire
protection and improved weight
distribution.
PAGES
4–5
You can count on John Deere Grapples to pick up a load the fi rst try.
The innovative G-III Series Grapples are designed with
two hydraulic cylinders, one for each tong, so they adjust
to each load with a secure grip. Closed-center, load-sensing
hydraulics maintain constant pressure on the tongs from
start to fi nish. Box construction with three internal ribs
on each tong makes them stronger without adding weight.
Choose from four single-function grapples
or three dual-function grapple versions.
A high torque motor drives the grapple
through 360-degree continuous rotation.
The single-function arch simply lowers and raises the
grapple head. It’s most productive working where it can pick up
tightly bunched piles in a single pass. Dual-arch geometry
uses four cylinders to reach out as well as lift. It pulls the load
over the rear for the best weight distribution and heavy load
control over longer hauls.
John Deere winches provide the power and
confi dence you need to skid big loads.
CABLE SKIDDERS
MAKE THE MOST OF EVERY LOAD.
G-III Series Cable Skidders have the power to skid big loads.
John Deere winches give you the power and reliability you need.
They are easy to operate with a single lever, and feature powerful
line pull, sealed wet-disc clutches, and spring-applied, hydraulically
activated brakes for extreme durability.
The rear assembly is built forest-tough to withstand the heavy
buffering they endure. The adjustable fairlead, heavy butt pan,
see-through ramguard screen, and strong fenders protect the tires,
rear frame, winch, and more importantly—the operator.
The fenders are shaped
to guide butts into the best
position for load control
during skidding.
LET’S KICK THE TIRES.
6.8 L and 8.1 L Deere engines
feature high torque rise, heavyduty engine blocks, proven
durability and fuel effi ciency.
The standard 4000 winch on cable skidders
boosts a bare drum line pull up to 47,697 lbf
(212 kN), while the optional 6000, only
available on the 640G-III, pulls a massive
50,517 lbf (225 kN). They are both easily
operated with a single lever and feature
sealed, wet-disc clutches and springapplied, hydraulically activated brakes
for extreme durability.
PAGES
6–7
Industry-leading Deere diesel engines feature
Powershift transmissions, with seven forward
and six reverse gears, which are controlled with
a bump shifter for ease of operation.
Industry-leading cab design utilizes isolation
mounts for reduced noise, vibration, and driver
fatigue. Operator comforts include a seat that
swivels up to 30 degrees, ergonomically located
controls, a tilt/telescopic steering wheel, and
climate control for all-season comfort.
Grapples are designed with
two hydraulic cylinders that adjust
to each load. Closed-center,
load-sensing hydraulics maintain
constant pressure on the tongs.
Three internal ribs on each tong
make them stronger without
adding weight, and tong tips are
constructed of wear-resistant
cast steel for a reliable grip.
Inboard planetary axles feature
wet disc brakes sealed and
immersed in cooling oil bath.
They are self-equalizing and
self-adjusting to decrease wear
with on-the-fl y diff locks.
648G-III / 640G-III
THE 600 SERIES SKIDDERS
SKIDDERS
RUN CLEAN WITHOUT COMPROMISE.
The muscle behind the 600 Series Skidders is the powerful PowerTech Plus™
6.8 L engine that runs clean without sacrifi cing power.
All John Deere skidder engines meet EPA and CARB
emission non-road regulations, while maintaining the
legendary John Deere power.
Exhaust gas recirculation (EGR) cools and mixes measured
amounts of exhaust gas with incoming fresh air to lower
peak combustion temperatures and reduce emissions.
And the engine’s four-valve design, with high-pressure
common rail fuel injection, provides greater low-speed
torque and better transient response.
The 600 Series Skidders feature an enhanced cooling system
with a new, more effi cient sucker fan design, which draws
air in the front, through the cooling package and out the
sides. The hydraulically driven cooling fan is temperature
controlled, so it runs only as needed, minimizing horsepower
use and drag. The fan is fully reversible to automatically
blow debris off the grill screen, optimizing air fl ow.
PAGES
8–9
The hydraulic reversible fan maximizes
debris management, and productivity,
by automatically blowing off the screen.
The new sucker fan design on the cooling
package pulls air in through the front
and out the sides.
The hinged door optimizes serviceability
with easy access to the cooling package.
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