Crawler Tractors |
PR 754 |
PR 764 |
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Engine Output (SAE J1349): 250 kW / 335 HP |
310 kW / 416 HP |
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Engine Output (ISO 9249): |
250 kW / 340 HP |
310 kW / 422 HP |
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Operating Weight: |
35,000 - 40,800 kg |
44,220 - 52,685 kg |
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77,162 - 89,948 lb |
97,488 - 116,150 lb |
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PR 754 |
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PR 764 |
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Engine Output (SAE J1349): |
250 KW / 335 HP |
Engine Output (SAE J1349): |
310 kW / 416 |
HP |
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Engine Output (ISO 9249): |
250 KW / 340 HP |
Engine Output (ISO 9249): |
310 KW / 422 |
HP |
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Operating Weight: |
35,000 |
- 40,800 kg |
Operating Weight: |
44,220 - 52,685 kg |
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77,162 |
- 89,948 lb |
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97,488 - 116,150 lb |
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Blade Capacity: |
8.9 - 11.7 m³ |
Blade Capacity: |
13.6 - 17.0 m³ |
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11.6 - 15.3 yd³ |
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17.8 - 22.2 yd³ |
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Hydrostatic travel drive, |
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Hydrostatic travel drive, |
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electronically controlled |
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electronically controlled |
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2 PR 754 Litronic PR 764 Litronic
Performance
Power and innovative technology are features of Liebherr’s generation 4 crawler tractors. Their excellent power-to-weight ratio stands for maximum productivity in all operating conditions. Whether ripping hard ground, moving material or grading surfaces, the outstanding performance of the PR 754 and PR 764 never fails to impress.
Economy
Liebherr’s economic advantages are undisputed: like all Liebherr machines, the PR 754 and PR 764 save money by being easy to service, with shorter down times and lower maintenance costs. The latest generation of Liebherr diesel engines combines performance with economy, and with the machines’ efficient drive-train, impressive power is available at minimum fuel consumption.
Reliability
Sturdy and strong: Liebherr crawler tractors and the materials used to build them are designed for long, trouble-free life. Components subject to severe loads are made from high-strength materials, and points exposed to possible damage are well protected. Liebherr crawler tractors owe their high levels of availability to these stringent reliability standards.
Comfort
The operator of a generation 4 Liebherr crawler tractor works in a cab of generous size, with controls laid out according to the latest ergonomic principles. This well-designed cab provides an ideal view of the work area and the working equipment. Intuitive single joystick control makes for sensitive and accurate dozer operation.
PR 754 Litronic PR 764 Litronic 3
Liebherr diesel engines featuring the latest technologies:
•Electronically controlled, the power output and torque curves are designed for outstanding power and tractive force when ripping or dozing.
•Environmentally responsible and economical: the engines comply with the latest exhaust emission limits.
•An extra-deep oil sump maintains engine lubrication at slopes of up to 45 degrees (PR 754) and 40 degrees (PR 764).
4 PR 754 Litronic PR 764 Litronic
Performance
Liebherr has successfully been building crawler tractors with hydrostatic transmission for the past thirty years. The generation 4 models exemplify power, efficiency and capability in a wide range of applications.
Outstanding productivity
Impressive power |
The powerful Liebherr diesel engine, combined with |
and drawbar pull |
Liebherr’s innovative driveline, makes ample power |
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available for every working situation. The hydrostatic |
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drive requires no gear shifting: engine power reaches |
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the tracks without interruption, even when turning. |
High traction and |
Thanks to the hydrostatic transmission, the operator |
ripping power |
simply selects the most suitable working speed. The |
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system automatically maintains peak engine rpm and |
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power efficiency. Track slip is kept low and maximum |
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power is continuously transferred to the tracks. |
Bogie suspension |
For work on uneven or rough surfaces, Liebherr offers |
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different types of bogie undercarriages for increased |
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traction and pushing power. |
Outstanding |
The hydrostatic drive is particularly suitable for ripping |
maneuverability |
work. The machine can be turned quickly, the rear |
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mounted ripper positioned accurately between hard |
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rock layers, and the material broken out with the nec- |
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essary force. |
Optimized blade |
The blades for the PR 754 and PR 764 have had their |
patterns |
penetration and rolling behavior optimized, to increase |
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their transport capacity. |
Low center of gravity |
The driveline assemblies are compact so that the com- |
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plete machine has a very low center of gravity, thereby |
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allowing safe operation on steep slopes. |
Generous ground |
The well-planned component layout is designed for |
clearance |
maximum ground clearance. Heavy duty belly pans |
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prevent damage when working on rough stone or rock. |
Liebherr hydrostatic transmission |
Oscillating roller tracks |
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• Automatic speed and torque adjustment |
• When working on uneven surfaces, |
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keeps the engine working at optimal |
oscillating bogie undercarriages |
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power as the load changes. |
increase the ground contact area |
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• Even at low speeds, for example in |
and improve traction. In addition, the |
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resilient mountings effectively absorb |
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demanding ripping operations, the ther- |
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shock loads. |
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mal load of the hydrostatic travel drive |
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remains low. The efficiency of the drive |
• For work on softer, more yielding |
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remained virtually unchanged. |
surfaces such as coal or wood chips, |
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tracks with rigid rollers are used. |
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PR 754 Litronic PR 764 Litronic 5
Specific fuel consumption [g/kWh]
Engine rated speed [1/min]
Constant engine speed keeps fuel consumption low
•Since the engine’s nominal operating speed is in the region of its lowest specific fuel consumption, maximum operating economy is assured.
6 PR 754 Litronic PR 764 Litronic
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