New H6H Winch Offers Significant Improvements - Allied Systems ...

2010 VOL. 29 NO. 1
New H6H Winch Offers Signifi cant Improvements
Good just got a lot better. The new
H6H winch is a major step up
from its predecessor, the very successful
H6G winch. This new H6H winch is
now available for the recently introduced
Komatsu D65-16 and for the
John Deere 750J and 850J dozers.
What makes it better? Quite a bit, in
controllability, speed, serviceability,
and equipment life. The features that
set this winch apart are the brakeoff
capability, the high line pull and
speed, the increased wire rope capacity,
and its plug-and-play design.
Let’s start with the internals. The H6H
comes with a new feature—brake-off,
achieved through an oil-bath, multidisc
brake-off clutch. The brake-off
function allows the tractor to drive
away from the tethered load while
keeping the wire rope taut, to prevent
the wire rope from “bird-nesting.”
This helps increase productivity in
areas of poor ground condition.
Like the H6G, the motor remains
internal to the winch, safely tucked
away from damage. The H6H uses a
heavy-duty bent-axis, variable displacement
piston motor to support
the higher pressure requirements of
the new generation of hydrostatic
dozers. This motor provides a continuously
variable speed control to the
wire rope, which helps the operator
do precise load setting. The motor
also delivers higher effi ciency, which
puts more horsepower to the wire
rope, yielding higher line speed at a
given line pull, particularly so in the
prime operating range.
There are some important changes
on the exterior of the winch as well.
First, the drum has been widened
by 1.0 inch (2.5cm), to increase its
wire rope capacity by 10 percent. The
wider frame retains the same profi le,
so that H6G and W6G fairlead and
integral arch can be used on H6H.
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Despite all the changes, the H6H
winch retains the advantage of “plugand-play”
design. The winch comes
with everything you need for a complete
and tidy installation. Installation
time for the winch is quick. Just bolt
the winch to the dozer rear face and
connect the hydraulic lines and you’re
on your way.
The Komatsu D65-16 powers the H6H
winch through an auxiliary hydraulic
ripper circuit that is a standard feature
on all D65-16 variants in North
America. The Komatsu ripper circuit
delivers the high pressure and high
fl ow rate needed to produce good
winch performance for demanding
applications.
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Sales Manager
Parts Manager
Service Manager

The John Deere 750J and 850J continue
as before, with an optional
factory-installed high-fl ow pump
dedicated to powering the winch,
delivering high performance.
Winch Paint Now Matches Your Dozer
For several decades the Allied winches were offered in one color only —
Allied yellow. Starting this year, the winches will now be offered in the
color to match the dozer. The following paint colors have been established
for the respective brands:
Caterpillar ...................................................New Cat Yellow
Komatsu ........................................Komatsu Natural Yellow
John Deere ........................ John Deere Construction Yellow
Case ............................................................Case Power Tan
Dressta..........................................................Dressta Yellow
The winch now becomes a
more seamless part of the
dozer, saving you the time and
expense of repainting the winch
to match your dozer. The paint
colors are offered at no additional
cost.
The New H6H Hydraulic Winch
One of the more interesting aspects
of this new winch is in its control
logic, which gives the operator a better
feel over the load and more confi
dence in handling heavy loads on
slopes. From a dead stop, the Allied
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H6H Towing Winch
Rated Capacity 60,000 lbs (27,300 kg)
Max line pull
bare drum *1 88,800 lbs (40,300 kg)
Max line pull
bare drum *2 107,000 lbs (48,600 kg)
Line speed at 40,000 lbs line pull
Bare Drum
ft/min
A newsletter published by
Allied Systems Company
Winch Division
Full Drum
ft/min
H6G 20 38
H6H 68 79
Gain 240% 108%
Wire Rope Capacity
3/4-in (19mm) 413 ft (125m)
7/8-in (22mm) 297 ft (90m)
1-in (25mm) 230 ft (70m)
*1 At wire rope strength limit
*2 At gear train limit
H6H winch starts off with slow speed,
smoothly ramping up to higher speed
as conditions permit, which makes
for extremely smooth starts. This
contrasts with other winches on the
market, which are confi gured the opposite
way. They start fast and revert
to low speed under load, which could
lead to a jerky start while hunting for
the proper setting.
Complete specifi cations on the new
H6H winch are available in the updated
specifi cation sheets on the Allied
website, www.alliedsystems.com.
Please contact us at 1-503-625-2560
or marketing@alliedsystems.com
for more information on this exciting
new winch.
21433 SW Oregon Street
Sherwood, OR 97140-9799 U.S.A.
Telephone: 503.625.2560
Fax: 503.625.7269
www.alliedsystems.com
marketing@alliedsystems.com