Crawler Tractors and Pipe Layers - · PDF fileLR-Kohletagebau_11_2010.indd 3 23.11.10 15:47 Liebherr crawlers and pipe layers 3 Belt reverse crawler tractor in open cast coal mining

LR-Kohletagebau_11_2010.indd 1 23.11.10 15:47

Product Information Applications in open cast coal mines and coal power stations

Crawler Tractors and Pipe Layers



2 Liebherr crawlers and pipe layers

Crawler tractors in open cast coal mining

Uses of Liebherr large crawler tractorsIn open cast coal mining, crawler tractors are used to loosen and displace excavated material in order to prepare terrain for large excavators and to form and clean roadways.

Technical data PR 754 PR 764

Operating weight kg / lb 41,300 / 91,050 51,500 / 113,530

Engine power kW 250 310

U-blade capacity m³ / yd³ 11.7 / 15.3 17.0 / 22.23

Width of track shoes mm / in 710 / 28’’ 710 / 28’’

High pull and pushing forceThe friction-locked and infinitely varia-ble hydrostatic travel drive give Liebherr crawler tractors high pull and pushing forces. This innovative drive system enables simple and safe operation in all work situations.

Outstanding levelling characteristicsCoal mining requires the regular laying of track systems and conveyor belts. The formation level required for the “moving over” are very quickly created by Liebherr crawler tractors.

Device configurationEach Liebherr crawler tractor can be individually configured. In coal mines, crawlers are very of-ten equipped with a U-blade, rear ripper or counterweight and wide track shoes.



3Liebherr crawlers and pipe layers

Belt reverse crawler tractor in open cast coal mining

Technical data PR 754 BR-PR 754

Operating weight kg / lb 41,300 / 91,050 44,000 / 97,003

Engine power kW 250 250

U-blade capacity m³ / yd³ 11.7 / 15.3 -

Width of track shoes mm / in 710 / 28’’ 710 / 28’’

Overview of the advantages• Reductionofamountofdevicesinopencastmining• Decreaseinoperatingcosts• Highutilisationcapacitythroughdualuse• Easyoperationofallfunctions• Highdegreeofworksafety• Especiallyappropriateformid-sizedbelt conveyor systems

Liebherr PR 754 belt reverse crawler. The efficient combination device.The basic machine can be converted into a “belt reverse” crawler in a very short time. This allows long conveyor belt systems to be shifted sideways. This multiple use of machine reduces the amount of devices required and brings about a substantial reduction in costs for the operator.




Maximum reverse power for large conveyor belts. The RL 64 Liebherr pipe layer in belt reverse application.In order to shift to the side conveyor belts which are kilometres long and very heavy, Liebherr offers an innovative solution:thenewandpowerfulRL64pipelayerwithaliftingcapacityofover90tons.

Pipe layers in open cast coal mining

Technical data RL 64

Operating weight incl. ballast weights kg / lb 62,000/136,600

Engine power kW 275

Max. lifting force kg / lb 91,700/202,164

Max. tractive force kN / lb 520/116,860

Width of track shoes mm / in 914/762-36’’/30’’

The highlights:• Outstanding performance due to high lifting and pulling force • Asymmetricaltrackshoesforminimalbearingloads• Highgroundclearance–importantwhenoperating on heavy overburden • Excellentdrivercomfortcontributestorelaxed working conditions • Simple and precise operation of the entire machine • Perfectall-roundview• Highsafetystandards




Crawler tractors for dumping coal

Technical data PR 724XL PR 734XL PR 744L PR 754 PR 764

Operating weight kg / lb 19,280 / 42,505 23,430/51,654 29,490/65,014 41,230/90,896 51,170 / 112,810

Engine power kW 120 150 185 250 310

Coal U-blade capacity m³ / yd³ 8.9/11.64 10.4/13.6 16.8/21.97 22.3 / 29.17 36.7/48.0

Width of track shoes mm / in 610/24’’ 610/24’’ 710 / 28’’ 710 / 28’’ 760/30’’

What are the advantages of using crawler tractors for dumping coal?• Theexcellentclimbingpowerofthecrawlertractorenablesthecoaltobestockpiledveryhighinalimitedspace. The available storage area for coal can be used much more efficiently.• Coalbecomesheavilycompacted.Thepowerstationcanholdlargerstoragereserves.• Thecompactingofthecoalreducesthedegassingandthedangerofcoalbeingburnedoffatthe ambient temperature.

Dumping coal in power stations.Liebherr offers specially equipped crawler tractors which dump large amounts of coal with extraordinary power and efficiency.




Strict noise emissions guidelines for certain coal power stations.For power stations located close to cities or residential areas, it is becoming increasingly important to reduce the noise emissions to a minimum for the inhabitants.

Liebherr offers the solution!The PR 764 can be optionallyequipped with a noise reduction packet which helps you to stay well within the European noise emission limits for construction machines. This makes it possible to operate the crawler tractor 24 hours a day.

PR 764 with reduced outdoor noise




Crawler tractors for ash dumping

Custom-made requirements and solutions• Liebherrcrawlertractorsareequippedasstandardwithapressurisedcabinsothatoutsideaircanonlyenterthecabin

via the air filter. It is also possible to install additional pre-filter systems for the cabin in order to protect the driver. • Theuseofareversiblehydrostaticfandriveguaranteesthatthecoolerwillbecleaned.• Sprocketsegmentswithrecessesandtrackshoeswithtrapezoidalholesenhancetheself-cleaningofthetracks.• Thevariablematerialconditions–verysoftsubsoilwithfreshlydistributedash,muddyonrainydays-requirecon-

stantly good traction. In order to meet these requirements, Liebherr crawler tractors are equipped with long track frames and wide track shoes.

Special device design for reliable operation.Dumpingcoalashonverydrydaysoftensubjectsyouand themachine toahighdegreeofdustcontamination. To deal with this problem, Liebherr offers special options which protect the driver and the crawler.


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PrintedinAustriabyArnold10665003-DD-11.10BK-RPIllustrationsanddatamaydifferfromstandardequipment.Subjecttochangewithoutnotice.

Liebherr-Werk Telfs GmbHHansLiebherr-Straße35,A-6410Telfs+43508096-100,Fax+43508096-7772www.liebherr.com, E-Mail: [email protected]

The Liebherr Group of Companies

Wide product rangeThe Liebherr Group is one of the largest construction equipment manufacturers in the world. Liebherr’s high-value products and services enjoy a high reputation in many other fields, too. The wide range includes domes-tic appliances, aerospace and transportation systems, machine tools and maritime cranes.

Exceptional customer benefitEvery product line provides a complete range of models in many different versions. With both their technical excel-lence and acknowledged quality, Liebherr products offer a maximum of customer benefits in practical application.

State-of-the-art technologyTo provide consistent, top quality products, Liebherr attaches great importance to each product area, its components and core technologies. Important modules and components are developed and manufactured in-house, for instance the entire drive and control techno-logy for construction equipment.

Worldwide and independentHans Liebherr founded the Liebherr family company in 1949. Since that time, the enterprise has steadily grown to a group of more than 100 companies with over 32,000 employees located on all continents. The corporate headquarters of the Group is Liebherr-International AG in Bulle, Switzerland. The Liebherr family is the sole owner of the company.

www.liebherr.com

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Zusammenfassung Fehler Warnung Repariert InfoDokument - - - -PDF/X - - - -Seiten - - - -Farben - - - -Schriften - - - -Bilder - - - 21Inhalt - - - -

BilderAuflösung von Farbbildern 187 dpi ist unter 800 dpi (1)Auflösung von Farbbildern 200 dpi ist unter 800 dpi (2-5)Auflösung von Farbbildern 239 dpi ist unter 800 dpi (8)Auflösung von Farbbildern 283 dpi ist unter 800 dpi (7)Auflösung von Farbbildern 288 dpi ist unter 800 dpi (5)Auflösung von Farbbildern 300 dpi ist unter 800 dpi (2-6,8)Auflösung von Farbbildern 304 dpi ist unter 800 dpi (8)Auflösung von Farbbildern 309 dpi ist unter 800 dpi (8)Auflösung von Farbbildern 330 dpi ist unter 800 dpi (5)Auflösung von Farbbildern 350 dpi ist unter 800 dpi (8)Auflösung von Farbbildern 380 dpi ist unter 800 dpi (2)Auflösung von Farbbildern 422 dpi ist unter 800 dpi (8)Auflösung von Farbbildern 441 dpi ist unter 800 dpi (3)

Sonstige InformationenFarbseparationen: 5 1 Problem(e) mit Farbnamen

CMYKHKS 04 -> HKS 4 K

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FarbräumeDeviceCMYK / DeviceGray / Separation

Schriften: 2Courier Type1 / WinAnsi / eingebettete UntergruppeHelvetica TrueType / WinAnsi / eingebettete Untergruppe

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Crawler Tractors and Pipe Layers - · PDF fileLR-Kohletagebau_11_2010.indd 3 23.11.10 15:47 Liebherr crawlers and pipe layers 3 Belt reverse crawler tractor in open cast coal mining