2018 International Forest Industries IFI Feb March 2018 Digital | Page 46

Tigercat solution for most of the
world’s at-the-stump harvesting
and roadside processing
applications.
New to market: The extreme-
duty 1185 harvester
The latest harvester addition to
the Tigercat product line-up is
the powerful 1185 eight-wheel
drive harvester. Equipped with
Tigercat built bogie axles and a
powerful Tigercat ER crane, the
premium quality 34 t 1185 sets a
new standard for durability and
productivity in tough terrain,
according to the manufacturer.
Tigercat’s unique WideRange
drive system increases working
travel speed while delivering
extremely powerful tractive effort
for high performance in steep
terrain and quick in-stand travel on
good ground.
The 1185 blends high
performance with fuel efficiency
through the use of advanced
hydraulic circuits. Dedicated
pumps power the drive, harvesting
head, crane, fan and cooling
circuit functions. In addition,
a closed-loop drive system
provides excellent performance
and response on steep slopes.
A pressure and flow-controlled
piston pump drives the cooling
fan, maintaining optimal operating
temperatures at the lowest
possible fan speed.
The crane features Tigercat’s
efficient and operator-friendly ER
technology. The hooked profile of
the main boom promotes excellent
right-side visibility.
“Not only is the crane efficient
but also simple in design, without
external parallel linkages,” Tigercat
stated.
With an extreme-duty slew
system and 360° continuous
rotation, the cabin rotates with
the crane. The cabin is spacious
with excellent visibility and clear
line-of-sight to the wheels. The
curved windshield affords excellent
upward visibility along with patent
pending protective technology.
“Operators will find all the
Operators will find all the creature comforts in the 1185 cab
creature comforts including a
comfortable and highly adjustable
climate-controlled seat with a four-
point harness and full Bluetooth
connectivity,” the manufacturer
stated.
The 1185 is powered by the
Tigercat FPT N67 engine with Tier
2 or Tier 4 configurations, rated at
230 kW (308 hp) at 2,000 rpm.
H855E and LH855E track
harvesters
The H855E and LH855E track
harvesters are highly efficient,
durable and reliable carriers suited
to a wide range of harvesting
and processing applications.
The H855E is designed for high
performance harvesting, at-the-
stump processing and roadside
processing duties in medium-to-
large tree size operations.
Both are powered by the
Tigercat FPT N67 engine and are
available for Tier 2 and Tier 4
regions. The Tier 2 version is rated
at 205 kW (275 hp) at 2,100 rpm
and the Tier 4f is rated for 210 kW
(282 hp) at 2,200 rpm.
Both models are available
with two-piece or telescopic ER
boom systems. The patented ER
boom system allows the machine
operator to extend and retract
the boom on a horizontal plane
smoothly and quickly using a
single joystick. The introduction
of the new 3-mode ER boom
control allows the operator to
choose between ER, semi-ER and
conventional.
The new semi-ER function
allows the operator to extend the
boom on a horizontal plane using
a single joystick but retracts the
boom with the increased power of
Both models, H855E and LH855E track harvesters available with two-piece or telescopic ER boom systems
44 International Forest Industries | FEBRUARY / MARCH 2018
both cylinders, doubling the pull
force. The stick boom or ‘reach’
joystick controls both the main
and stick booms simultaneously,
resulting in the attachment moving
either away from or toward the
operator. The main boom and tilt
functions operate in the traditional
manner to adjust the height and
angle of the attachment.
Key to this technology is
reduced energy consumption. The
ER system transfers energy back
and forth between the main and
the stick boom functions, reducing
the total energy needed to move
the boom system. This translates to
reduced demands for power, pump
flow and system cooling.
“Competing solutions do not
offer the simplicity and fuel savings
of Tigercat’s design,” according to
the manufacturer.
The engine and hydraulic
systems are specifically designed
to achieve maximum performance
and minimum fuel consumption
in harvesting and processing
applications. High horsepower
allows the carriers to maintain
hydraulic flow as the pressure
increases, maintaining quick feed
speeds and significantly boosting
productivity.
A dedicated attachment pump
supplies oil to the primary head
functions, delivering flow and
pressure to match the demands
of the head without interference
from other machine functions,
while delivering maximum fuel
efficiency. With a high-performance
valve and control system, the
machine is optimized for harvester
performance and fuel efficiency.
The LH855E features Tigercat’s
patented levelling system,
providing exceptional stability
in steep-slope applications and
optimum weight transfer. It uses
two massive hydraulic cylinders
and heavy steel sections for
a solution that is both simple
and robust. Due to the unique
geometry of the levelling system,
the machine is well balanced on
slopes.
Regardless of the angle of the
undercarriage in relation to the
upper, the track pressure is even
all the way along the bottom of
the tracks as long as the upper is
close to horizontal. This makes
the machine feel very stable
and predictable. In addition, the
ramped undercarriage (both the
front idler and the rear gearbox
are set higher than the centreline
of the undercarriage) allows the
machines to easily drive up over
rocks and stumps.