Pm Trac 8-wheel-systems

If one combines the Pm Trac with a self-propelled forwarding trailer and tunes its speed to that of the towing vehicle, the Pm Trac 8-wheeler is the result. The Pfanzelt 8x8 forwarding combination consists of a system tractor and a rear trailer with 4-wheel wheel hub drive. This combination is on a par with a conventional forwarding combinations and also offers a wide range of other possible applications.

 

Uphill at full power.

High-performance forwarding, flexible use and quick conversions are also possible in combination with Pfanzelt Professional series forwarding trailers. A thrust of 6.1 metric tons is available if the forwarding trailer features a powerful wheel hub drive.

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More details on Pm Trac 8-wheel

The chassis

The Pm Trac II has been mounted on a vehicle chassis from a leading tractor manufacturer. The frame was, however, originally designed for agricultural use and as a result had to be redesigned for use in forestry applications. With the new production series of the Pm Trac III, a completely new vehicle chassis has now been developed. The basis is a vehicle frame that has been designed from scratch for forestry use. The new front axle, in the form of a sliding tube axle with hydraulic suspension and automatic immobilisation, also constitutes an integral part of the new chassis. As soon as the Pm Trac comes to a halt, the hydraulic suspension is automatically locked. The vehicle now achieves a degree of stability that was previously only attainable by special forestry tractors. The quiet running and powerful 6-cylinder DEUTZ engine in the Pm Trac model 3618 and 3623 with 180 or 235 hp satisfies highest performance requirements with a minimum of fuel and total operating costs. Equipped with a modern and powerful exhaust gas aftertreatment system, the Pm Trac meets the limits of the EU Tier V emissions standard. For exhaust gas cleaning, a powerful state-of-the-art SCR injection system is used in addition to the externally cooled exhaust gas recirculation.

Forestry protection

The Pfanzelt forestry protection concept of the Pm Trac also includes complete protection for the chassis in addition to the dashboard, roof and engine hood.

 

Pfanzelt System for Attachment (PSA)

The relocation of the cab to the centre of the vehicle means that additional implements can be mounted in the tail attachment bay by means of the Pfanzelt System for Attachment (PSA); as a result the attachments are directly over the rear axle.

Via a special quick conversion system, attachments can be changed without requiring tools in a very short time. For example, it now takes less than 20 minutes to attach or remove a crane or cable winch.

Road travel

The operator can rapidly reach working locations or change between them with a permitted road speed of 50 km/h and a transmission suited for road use, and all without requiring an expensive transporter. Even in combination with a forwarding trailer or a trailer-chipper, the vehicle can still be driven on public roads.

The lighting systems and mudguards required for road use can be easily and rapidly removed for forestry operations. The four mudguards that are mounted with a snap-on system are in this case detached from the vehicle. The indicator lights and headlights are concealed behind protective panels.

 

XXL cab

The tractor cab developed by Pfanzelt with pneumatic suspension enable smooth and vibration-free operation.

The view over the working environment is further extended by 7 m2 of window area. The driver has an even better view of his working zone, this means less stress and increasing safety. The driver has a relaxed and ergonomic sitting and working position on the operator stand that can now can be turned through 350° by electric motor. The intelligent machine controller which is operated via a touch screen from the seat – also saves the individual preferred settings for different drivers.

The Pfanzelt XXL cab has been especially created with the demands of our customers in mind – low vibrations when working in standing timber yet with maximum comfort when driving at 50 km/h on public roads.

All operating and monitoring functions are mounted on the seat and therefore always in the operator’s field of vision.

An additional control panel for on-road driving is provided next to the steering wheel. All key parameters are conveniently displayed in driver’s field of vision.

Unique in the forestry industry and essential for municipal use is the possibility to install a passenger seat in the driver’s cab as an option.

 For forestry work, the steering column is simply and rapidly folded to one side.

 

Service friendly

Pfanzelt’s carefully designed service concept begins with easy access to the radiator and engine compartment for cleaning. The vehicle cab can be tipped up for easy access to the remaining machinery compartment. The loading crane and cable winch can be removed in a matter of minutes, exposing the remainder of the chassis.

The floor pan of the tractor can be additionally opened via a cable winch. This means that one person can safely work on his own.

 

Stowage space

Chainsaws, fuel canisters and other useful accessories can be stowed practically and tidily in a large tool box under the entrance into the driver’s cab.

 

Create an 8-wheel system thanks to forwarding trailers

In this combination the Pfanzelt Professional P17 forwarding trailer boasts a payload of 15 metric tons and a drive force of 6.1 metric tons. As a result the 8-wheel system generates a thrust of 16.1 metric tons. This means the vehicle can also cope with challenging terrain and it keeps damage to substrate to a minimum. The Pm Trac electronically and fully automatically controls the forwarding trailer’s drive speed. Operators can make any required adaptations. Consequently, it is possible to adjust the lead or lag. 

The range of the steerable draw bar totals 68 degrees to thus make the combination agile and enable manoeuvring in confined spaces.

The electronic terminal features a large display to monitor the drive system and all important operating states. The terminal also enable a configuration of different adjustment options.

Using the cable winch with the forwarding trailer

If required, the remote-controlled, dual-drum cable winch that has been installed at the rear below the crane remains fully functional, even with attached forwarding trailer. Consequently, the unit provides an unrestricted attachment of tree trunks outside the crane’s reach using cables as well as felling with cable winch support.

Technical spec Pm Trac 8-wheel

 Pm Trac 3618Pm Trac 3623Pm Trac 3830
Customise nowConfiguratorConfiguratorConfigurator
Engine6-cylinder turbo-diesel in-line engine with electronic control, common rail process, staged turbo charger, intercooler, emission standard EU V with external exhaust gas recirculation, SCR catalytic converter for exhaust gas aftertreatment, Cleanfix MC switch-over fan
Output (at 2,100 rpm as per ISO14396)133 kW/181 hp174 kW/237 hp215 KW/292 hp
Cylinder capacity6.1 ltr.7,4 ltr.
Transmission

variaDRIVE continuously variable 0-50 km/h

Continuously variable power-split transmission with cruise control function, driving speed: 0 – 50 km/h, engine/transmission management, 3 forward driving ranges, 2 reverse driving ranges, max. Drive speed with reduced engine speed (approx. 1,800 rpm). Reversing mechanism (forwards/backwards) on the steering shaft and swivel seat, active standstill control (parking lock)
Front axleHydro-pneumatically spring-loaded thrust tube axle with automatic level control, electro-hydraulically switchable differential lock, central front axle drive, integrated constant-speed steering cylinder, axle automatically blocked when crane is operated when stationary
All-wheel driveAll-wheel and differential lock management
SteeringHydrostatic steering, steering column can be folded away when working, incl. joystick control via control unit
Brakes

2-line compressed-air brake system, Rear axle Dry drum brake, pneumatically actuated parking brake via tristop cylinder with integrated trailer test position, single wheel brake

Front axle: Dry disc brakes left and right incl. integrated Opti-Stop front-axle brake
PTO

Switchable PTO 540E/ 750/ 1000 rpm (optional 1000E/1000/1450 rpm)

PTO connection 1 3/8" plug-in PTO, electro-hydraulically switchable wet multi-plate clutch, PTO automatic (height adjustment via rear hoist) PTO management, adjustable start-up mode, automatic switch-off (speed-dependent)
Hydraulics

Hydraulic system with axial piston variable displacement pump, load sensing controlled, hydraulic oil cooler

Flow rate/operating pressure: 160l/min at 210 bar (optional 210 l)
Electronics

CAN BUS system: Central control and monitoring of the engine, transmission, auxiliary control units, operating terminal (touchscreen and push button switch) at the operator station for monitoring and control

Integrated functions for crane settings, all-wheel drive, differential, steering. 4 different driver settings can be saved + Pfanzelt basic setting
Front power liftmax. lifting force 35 kN, double-action
rear power lift

max. lifting force 82 kN

external lifting cylinder actuated via control valve EW with floating position, switchable to double-action for lifting and pressing

Lower link rapid-action coupler, adjustable lower link stabilisers
Front loaderFlange points on integr. bearing frame for mounting front loader mounting brackets
Rear attachment bayPfanzelt System for Attachments (PSA), vehicle support frame to stabilise the block construction
CabSpacious, air-suspended cab with all-round view (over 7m² window area), two large roof windows front and rear, safety cab as per ISO standards (ROPS and FOPS)
Air-suspended rotary seat with seat heaterElectromotively rotatable by 350°
VentilationEfficient heating and air-conditioning system with 3-stage blower, incl. automatic air conditioning system
Fire extinguisher
Additional standard equipmentMudguard removable at front and rear, storage box with integrated pneumatically controlled step
Dead weight / permitted max. weight

Depending on equipment/14 t

Pm Trac 8-wheel system forwarding trailer

Forwarding trailer Profi P17Forwarding trailer logLINE L19

Loading cross section

3,52 m²3,5 - 4,0 m²

Payload in forests

15,0 t17,0 t

Permitted max. weight on public roads

17,0 t19,0 t

Deadweight

2,5 t3,5 t

Tyres

600/50-22.5600/50-22.5

Drive

powerDRIVE

4-wheel hub drive including electronic control unit

powerDRIVE

4-wheel hub drive including electronic control unit

Drive power

6,1 t6,1 t

Drive speed

4,1 km/h

4,1 km/h

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