Crawler Tractors |
PR 734 |
PR 744 |
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Engine Output (SAE J1349): |
150 kW / 201 HP |
185 kW / 248 HP |
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Operating Weight: |
20,388 - 24,961 kg |
24,605 - 31,669 kg |
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44,948 - 55,030 lb |
54,245 - 69,818 lb |
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PR 734 |
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PR 744 |
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Engine Output (SAE J1349): 150 kW / 201 HP |
Engine Output (SAE J1349): 185 kW / 248 HP |
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Operating Weight: |
20,388 - 24,961 kg |
Operating Weight: |
24,605 - 31,669 kg |
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44,948 - 55,030 lb |
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54,245 - 69,818 lb |
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Blade Capacity: |
3.80 - 5.56 m³ |
Blade Capacity: |
4.90 - 7.20 m³ |
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4.97 - 7.27 yd³ |
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6.41 - 9.42 yd³ |
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Hydrostatic travel drive with |
Hydrostatic travel drive with |
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electronic control |
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electronic control |
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2 PR 734 Litronic PR 744 Litronic
Performance
Sheer strength and innovative technology – these are the hallmarks of the generation 4 of Liebherr crawler tractors. The impressive balance between operating weight and engine output assures maximum productivity under all conditions. Whether during ripping, dozing or grading, the PR 734 and the PR 744 excel in any application with outstanding performance.
Reliability
Strong and robust: In terms of their construction and quality of materials, Liebherr crawler tractors are consistently designed with longevity in mind. Parts that are subjected to considerable stress are produced from high-strength material; critical components are optimally protected. All this makes Liebherr crawler tractors the benchmark for reliability and availability.
Economy
Clear economic benefits speak for Liebherr. Like all Liebherr machines, the PR 734 and the PR 744 boast an exemplary service concept. This reduces both down times and maintenance costs. Our latest-generation diesel engines combine high performance and fuel economy – guaranteeing exceptional pushing power with low fuel consumption and the efficient drive system.
Comfort
Generation 4 crawler tractors offer a spacious and comfortable workplace designed according to state-of-the-art ergonomic standards, giving the operator an excellent view of the work area and the blade. The intuitive sin- gle-joystick enables sensitive and reliable control of the machine.
PR 734 Litronic PR 744 Litronic 3
Liebherr diesel engine
•State-of-the-art technology: Pump-line- nozzle injection system, 4-valve technology, turbocharger with charge-air intercooling and electronic engine management ensure power reserves in every situation.
•Environmentally-friendly and economical:
Complies with the latest exhaust emissions standards 2004/26/EC Stage IIIa (EU) and EPA/CARB Tier 3 (US).
•Extra-deep oil sump permits travel on gradients up to 45°.
4 PR 734 Litronic PR 744 Litronic
Performance
Liebherr has over 30 years of experience in the manufacture of hydrostatically driven tractors. The high-performance generation 4 crawler tractors are the perfect machines for a wide variety of applications.
High productivity
High drawbar pull |
The powerful Liebherr diesel engine in combination |
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with the innovative Liebherr travel drive guarantees |
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ample power in all situations. The drive system |
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does not require any gearshifting, which means that |
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engine power is transferred to the tracks without |
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interruption – even when cornering. |
High dozing and |
The hydrostatic travel drive enables the operator |
ripping power |
to define the optimal travel speed and drawbar pull |
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with ease - preventing the tracks from slipping and |
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ensuring that maximum power is transmitted to the |
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ground at all times. |
Optimized blade design for improved rolling of the material
The blade contours of the PR 734 and PR 744 machines have been further optimized. Improved rolling of the material enables the machine to achieve even higher productivity.
Best levelling |
The entire front-end superstructure of the machine is |
characteristics |
torsionally rigid and robust. In conjunction with the |
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long track frames, this ensures smooth operation of |
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the blade at all times. |
A diversity of applications
Outstanding |
The hydrostatic drive has a further advantage when |
maneuverability |
working in confined spaces. All travel movements |
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can be performed quickly and without difficulty, |
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including counter-rotation. |
Low machine |
The layout of the drive components results in an |
center of gravity |
extremely low machine center of gravity, which per- |
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mits safe operation during even the most challeng- |
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ing applications on slopes and embankments. |
Liebherr hydrostatic drive |
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Optimized blade design |
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• Automatic speed and torque adjustment |
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• The blades are defined by uncom- |
constantly optimizes the machine’s power |
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promising penetration characteris- |
flow in the event of load changes. |
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tics and outstanding rolling of the |
• Even at low speeds, for example in demand- |
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material. The sloping top corners |
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of the blade allow the operator to |
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ing ripping operations, the thermal load of |
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quickly ascertain blade filling. |
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the hydrostatic travel drive remains low. |
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The high efficiency of the drive remains |
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• Robustly-built using wear-resistant |
almost unchanged. |
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materials, Liebherr blades excel |
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under even the most demanding |
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conditions. |
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PR 734 Litronic PR 744 Litronic 5
Consistent engine speed for low fuel consumption
• The rated engine speed lies in the range of lowest specific fuel consumption, thereby ensuring maximum operating efficiency.
Specific fuel |
consumption [g/kWh] |
Engine speed [1/min]
6 PR 734 Litronic PR 744 Litronic