Pm Trac III 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 III 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 III

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 smooth-running and high-torque 6-cylinder DEUTZ engine of the Pm Trac models 2380 4f and 2385 4f with power ratings of 133 kW or 174 kW ensures maximum performance and minimum fuel and total operating costs.

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 specs for Pm Trac

 Pm Trac / Forsttrac 2380 4fPm Trac / Forsttrac 2385 4f
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Engine

Deutz TCD 6.1 L6 Agri

Power (at 2,100 rpm as per ISO14396)133 kW174 kW
Torque818 Nm at 1,500 rpm

1,027 Nm at 1,500 rpm

No. of cylinders / cylinder capacity6 / 6.1 L
Cooling

water-cooled / turbocharger / intercooling

Exhaust gas treatment

SCR technology with AdBlue injection, soot particle filter

Tank capacity

145 L (optional additional tank with 120 L)

Transmission

split transmission, infinitely adjustable reverse gearbox with automatic speed control function for forward and reverse travel, engine-transmission management, 3 driving ranges, preselectable travel speed 0-50 km/h, clutchless reverser (forward/reverse), active parking control (parking lock)

Front axle

Hydropneumatically suspended thrust axle with automatic level control
(axle during crane operation / automatically locked in position)

All-wheel drive

Comfort all-wheel and differential braking management

Steering

Hydrostatic steering, steering column can be folded away when working,incl. joystick control via control unit

Brakes

Hydraulic servo disc brakes in oil bath, disc brakes on the rear axle, spring-loaded parking brake, 2 line pneumatic brake system

PTO

Quadruple PTO 540, 540E, 1000, 1000E rpm with PTO management

Hydraulics

Pressure & volume controlled axial piston pump with load sensing

Pumping rate / operating pressure

140 L/min / 210 bar

Optional additional pump

120 L/min / 210 bar

Control valves

Electrically proportionally controlled valves,quantity and time adjustable via display

Electronics

CAN-BUS system: Central control and monitoring of engine transmission, additional control units, operating terminal with touch screen at control station

Front power lift

Max. lifting force 35 kN, double-action 

Rear power lift

Max. lifting force 82 kN, actuated via 1-way control valve with floating position,can be switched to double-action for lifting and pressing, adjustable lower arm stabilisers

Front loader

Flange points on integrated bearing frame for mounting front loader attachment frames

Rear attachment bay

Pfanzelt System for Attachments (PSA), vehicle frame for stabilisation of the modular structure with hook mounting

Cab

Spacious cab with air suspension and all-round view (over 7 m2 window area), two large roof windows front and rear, safety cab as per ISO standards (ROPS)

Air suspended rotary seat with seat heater

Electrically rotatable through 350°

Ventilation

Heating with 3-stage blower, automatic air-conditioning

Fire extinguisher

Lighting

12 working floodlights integrated in cab roof

Additional standard equipment

Detachable mudguards, stowage bins with integrated pneumatically operated step

Dead weight / permitted max. weight

depending on equipment / 14 t

Pm Trac 8-wheel system forwarding trailer

P171590WD4

Loading cross section

3,52 m²2,9 - 3,4 m²

Payload in forests

15,0 t15,0 t

Permitted max. weight on public roads

17,0 t15,0 t

Deadweight

2,5 t4,9 t

Tyres

600/50-22.5650/45-22.5

Drive

4-wheel hub drive including electronic control unit

4-wheel hub drive including electronic control unit

Drive power

6,1 t9,0 t

Drive speed

Adjustable using the control unit

Gradually between 0 and 14 km/h

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