On ‘track’ to provide the best options for all occasions
Enhanced visibility with excellent sight lines to both the right and left sides of the cab
TIGERCAT BUILDS a full range of harvesting solutions including track harvesters, wheeled harvesters, harvesting/ processing heads and control software.
There is a Tigercat solution for most of the world’s at-the-stump harvesting and roadside processing applications.
Tigercat’s purpose-built forestry track carriers offer significant performance and durability advantages over excavator conversions.
H820D limited tailswing track harvester
Building on the highly successful 822D/L830D platform, Tigercat has introduced the new H820D harvester. It is powerful and capable, yet compact and nimble -- with a long reach 9.1 metre (30 ft) boom and limited tail-swing, minimizing ground disturbance and residual stand damage in thinning operations. The hydraulic system is optimized for maximum performance and fuel efficiency in harvesting applications.
The H820D shares the ergonomic cab design with the 822D feller buncher. Narrower front posts and larger side windows enhance visibility with excellent sight lines to both the right and left sides of the cab. The skylight has been replaced by a camera system providing the operator with a much wider field of view and eliminating visibility inhibiting elements like debris for year-round capability. The cab interior is quiet and instrumentation has been thoughtfully placed to optimize ergonomics. The electronic control system interface uses a highresolution, 180mm touch screen colour monitor. There are multiple mounting points for additional electronic devices like attachment or harvesting head monitors which can now be quickly and easily located to the operator’s preference.
The engine compartment is easily accessed via the independent, poweroperated side platform and roof enclosures. Access to components and daily service points is excellent with available ground level fueling and easy access to the hydraulic filters, hydraulic oil fill pump, swing gearbox remote oil level tank, cooling system components and both sides of the engine.
The Tigercat FPT N67 engine is available in Tier 2 or Tier 4 configurations. The N67 engine is equipped with a second generation common rail fuel injection system, allowing it to achieve top performance in terms of load response, maximum torque and top power with minimum fuel consumption. Best of all, the N67 engine is fully supported by Tigercat and the Tigercat dealer network. For Tier 2 regions, the N67 on the H820D is rated at 205 kW (275 hp) at 2,100 rpm and delivers a peak of 210 kW (282 hp) at 2,000 rpm.
H845D and H855D track harvesters
The H845 and H855D track harvesters are highly efficient, durable and reliable carriers suited to a wide range of harvesting and processing applications. The H855D is designed for high performance harvesting, atthe-stump processing and roadside processing duties in medium to large tree size operations. The H845D carrier has 25% less tailswing than the H855D and is well suited to plantations and natural stands and excels in smaller diameter timber. Both are again powered by the Tigercat FPT N67 engine and for Tier 2 regions are rated at 205 kW (275 hp) at 2,100 rpm and deliver peak output of 210 kW (282 hp) at 2,000 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 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.
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 and can be fully Load Sensed for maximum fuel efficiency. With a high performance valving and control system, the machine is optimized for harvester performance and fuel efficiency. Under high flow conditions like feed or saw operation, additional oil is supplied from the Pump 2 circuit’s main load sensing system.
The LH820D, LH855D and LH845D all feature Tigercat’s patented leveling 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 leveling 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.
A Tigercat LH855D performing roadside processing in Utah, USA.
The H845D processing pine.
The new Tigercat H820D gives loggers new choice for a versatile limited tailswing harvester carrier.