®®

EngineEngine Model Cat® C15 ACERT™Gross Power – SAE J1995 321/333 kW 430/447 hp

Operating SpecificationsNominal Payload Capacity 17 200 kg 37,926 lbGross Machine 67 409 kg 148,611 lbOperating Weight

Bucket CapacitiesBucket Capacity – Std. 7.2 m3 9.4 yd3

R2900GUndergroundMining Loader

2

R2900G Underground Mining LoaderEngineered for performance. Designed for comfort. Built to last.

Performance and Agility.Compact design, high engine power,higher torque rise, stronger componentsand excellent maneuverability ensuresthe R2900G is a solid performer.

Unmatched Operator Comfort.World class operator station fitted withrevolutionary electronics and hydrauliccontrols for low effort operation andincreased productivity.

Safety

Caterpillar sets the standard whenit comes to safety in the design andmanufacturing of heavy equipment forthe mining industry. Safety is not anafter thought at Caterpillar, but an integralpart of all machine and systems designs.pg. 13

Customer Support

Caterpillar® dealers provide unmatchedproduct support, anywhere in the world.With industry-best parts availabilityand a wide range of maintenance andservice options, Cat dealers have whatit takes to keep your mining machinesproductive. pg. 12

Serviceability

The R2900G is designed for quick andeasy servicing. Simplified service andmaintenance features reduce downtime,allowing the machine to spend less timebeing serviced and more time beingproductive. pg. 11

Hydraulics

Powerful Cat hydraulics deliverexcellent digging and lifting forces tomove materials quickly. High volumepumps and large cylinders providequick, powerful response and fast cycletimes. Pilot operated joysticks providelow effort operation and smoothcontrol. pg. 6

Power Train – Transmission

The Cat four-speed planetary powershift transmission features heavy dutycomponents to handle the toughest jobs.Electronic controls allow smooth shiftingfor greater productivity, durability andlonger component life. pg. 5

Power Train – Engine

The Cat C15® engine with ACERT™Technology delivers the power andreliability necessary to perform in themost demanding underground miningapplications. Designed for efficientoperation, excellent fuel efficiency,lower emissions, reduced engine noiseand lower operating costs. pg. 4

3

Buckets

Cat underground loader buckets aredesigned for optimal loadability andstructural durability in tough miningconditions. A ranges of sizes andconfigurations are available to matchmaterial conditions and maximizeproductivity. pg. 10

Operator Station

The ergonomic cab is designed foroperator comfort and ease of operationto allow the operator to focus onproduction. Controls and gaugesare positioned within easy reach foroptimum efficiency and superiorcontrol all shift long. pg. 8

Structures

Structural components are the backboneof the R2900G durability. The heavyduty loader frame is designed and builtto absorb twisting, impact and highloading forces for maximum durabilityand reliability. Z-bar linkage generatespowerful breakout forces and optimumloading angle. pg. 7

Cat C15 Engine with ACERT™Technology. The Cat C15 engine withACERT™ Technology is U.S. EPATier 3 and EU Stage III compliant.It features efficient fuel managementfor quick response, high productivityand exceptional service life. A new,sculptured cylinder block providesgreater strength and lighter weight.

High Torque Rise. Provides unequalledlugging force while digging, trammingand traversing steep grades. Torque riseeffectively matches transmission shiftpoints for maximum efficiency and fastcycle times.

Radiator. Modular radiator with swing-out grill provides easy access for cleaningor repair. Built in sight gauge allows forquick, safe coolant level checks.

Pistons. Oil cooled pistons increase heatdissipation and promote longer piston life.

ADEM™ IV System. Controls the fuelinjector solenoids to monitor fuelinjection. This system provides automaticaltitude compensation, air filter restrictionindication and it will not allow the engineto fire until it has oil pressure, actingas cold start protection and a formof pre-lube.

Turbocharged and Aftercooled.Air-to-air aftercooling providesimproved fuel economy by packingcooler, denser air into cylinders formore complete combustion of fueland lower emissions. The turbochargerenhances performance and efficiency.

Mechanically Actuated, Electronic UnitInjection (MEUI). Proven high-pressure,direct injection fuel system electronicallymonitors operator demands and sensorinputs to optimize engine performance.

Cylinder Liners. Full-length water-cooledcylinder liners provide maximumheat transfer.

Crankshaft. The crankshaft is forgedand induction hardened for long-termdurability.

4

Power Train – EngineThe Cat® C15 engine with ACERT™ Technology delivers the power and reliability necessaryto perform in the most demanding underground mining applications.

Power Shift Transmission.The Cat four-speed planetary powershift transmission is matched with theC15 engine with ACERT™ Technologyto deliver constant power over a widerange of operating speeds.

• Hydraulic modulation cushionsthe shift and reduces stress oncomponents.

• High contact pump drive and outputtransfer gears are used to reducesound levels.

• Pump drive and output transfer usehigh contact gear ratios to reducesound levels.

• Perimeter mounted, large diameterclutch packs control inertia forsmooth shifting and increasedcomponent life.

Robust Design. Designed for ruggedunderground mining conditions,the proven planetary power shifttransmission is built for long lifebetween overhauls.

Electronic Controls. Electronic controlsallow smooth, on-the-go shifting forgreater productivity.

Torque Converter. High capacity torqueconverter delivers more power to thewheels for superior power trainefficiency.

Electronic Autoshift Transmission.The electronic autoshift transmissionincreases operator efficiencies andoptimizes machine performance.The operator can choose betweenmanual or auto shift modes.

Transmission Neutralizer. Using theleft brake pedal, the operator can engagethe service brakes and neutralize thetransmission, maintaining high enginerpm for full hydraulic flow, enhancingdigging and loading functions.

Final Drives. Cat final drives work asa system with the planetary power shifttransmission to deliver maximum powerto the ground. Built to withstand theforces of high torque and impact loads,final drives provide high torquemultiplication to further reduce drivetrain stress.

Axles. Heavy duty axles are builtrugged for long-life in the mostdemanding environments.

Oscillating Rear Axle. Oscillating rearaxle ensures four-wheel ground contactfor maximum traction and stability atall times.

Duo-Cone™ Seals. Duo-Cone™ sealsbetween the axle spindle and housingskeep lubrication in and contaminants out.

Brakes. Fully enclosed oil immerseddisc brakes incorporate independentservice and parking brake pistons.Hydraulic actuated independent circuitsprovide improved performance andreliability.

Cat Electronic Technician. Cat ET servicetool provides service technicians witheasy access to stored diagnostic datathrough the Cat Data Link to simplifyproblem diagnosis and increaseavailability.

5

Power Train – TransmissionDesigned for durability, the Cat power shift transmission delivers smooth, responsiveperformance and reliability in tough conditions.

1

1 Parking/Secondary Piston 2 Service/Retarding Piston 3 Friction Discs 4 Steel Plates 5 Actuating Springs 6 Cooling Oil In 7 Cooling Oil Out

2

7

65

4

3

Hydraulic System. Powerful Cathydraulics deliver exceptional diggingand lifting forces for fast cycle times.

Lift and Tilt System. High hydraulicflow rates provide fast hydrauliccylinder response and powerful liftforces. Large-bore lift and tilt cylinderdelivers exceptional strength,performance and durability.

Pilot Controls. Low effort, pilotoperated joystick implement controlwith simultaneous lift and tilt functionsoptimizes operating efficiency.

Optional Ride Control. The optional ridecontrol system uses a nitrogen filled oilaccumulator in the hydraulic lift circuitto act as a shock absorber for the bucketand lift arms. The lift arm and bucketresponse to movement is dampened overrough ground, reducing fore and aftpitch, improving cycle times and loadretention. A smoother, more comfortableride gives operators the confidence totravel at speeds above 5 km/h (3 mph)during load and carry operations.

Cat Hydraulic Hose. Field provenCat high pressure XT™ hydraulic hosesare exceptionally strong and flexible formaximum system reliability and longlife in the most demanding conditions.Reusable couplings with O-ring faceseals provide superior, leak freeperformance and prolong hoseassembly life.

6

HydraulicsCat hydraulics deliver the power and control to keep material moving.

Frame Design. The frame featuresrobust structural components foroutstanding durability in the toughestloading conditions. Caterpillar integratesadvanced processes in the design andmanufacture of Cat frames and structures.Computer modeling and Finite ElementAnalysis (FEA) are used extensivelythroughout design.

Steel Frame. Strong steel frame structuresare designed to resist twisting forces,torsional shock and stresses generatedduring the loading cycle whileprotecting drive line and hydraulicsystem components.

Lift Arms. Solid steel lift arms absorbhigh stresses generated during loadingwithout sacrificing strength or durability.The linkage design offers excellentreach and dump clearance for betterproductivity. Lift arm support pinsprevent lowering the lift arms duringservice and maintenance.

Loader Tower. The four plate loadertower provides a solid mount for liftarms, lift cylinders and Z-bar tilt lever.The loader frame is designed and builtto absorb twisting, impact and highloading forces.

Cast-Steel Cross Tube. The cast steelcross tube provides excellent resistanceto torsion and impact loads, keeping pinbores aligned and extending componentservice life.

Z-Bar Loader Linkage. Proven Z-Barloader linkage geometry generatespowerful breakout force and an increasedrack back angle for better bucketloading and material retention.

Sealed Pins. Sealed colleted pins arefitted to all bucket and lift arm hingepoints for longer pin and bushing life.This reduces maintenance costs andextends service intervals. The sealedjoints retain lubrication and preventcontaminant entry.

Hitch. Spread hitch design widens thedistance between upper and lower hitchplates to distribute forces and increasebearing life. Thicker hitch plates reducedeflection. The wide opening provideseasy service access. Upper and lowerhitch pins pivot on roller bearings todistribute horizontal and vertical loadsover a greater surface area. Shim adjustedpreload reduces maintenance time.An on-board steering frame lock pinis fitted to prevent articulation duringmaintenance and service.

7

StructuresDesigned for maximum strength and durability in the harshest operating environments.

Ergonomic Layout. The operator stationis ergonomically designed for totalmachine control in a comfortable,productive and safe environment.All controls, levers switches and gaugesare positioned to maximize productivityand minimize operator fatigue.

Pilot Controls. Low-effort pilot operatedjoystick controls integrate steering,transmission and implement functionsfor smoother, faster cycles with lessoperator fatigue.

Electronic Autoshift. Allows the operatorto choose automatic or manual shifting.In auto mode, the operator uses a dashmounted switch to select the highestgear they wish the machine to shift to.In this mode, the transmission shifts atfactory preset shift points so that eachshift occurs at optimum torque andground speed for maximum machineperformance.

Dual-Pedal Braking. Dual brake pedalsfunction as a brake and a transmissionneutralizer so the operator can maintainhigh engine rpm for full hydraulic flowand fast cycle times.

Protective Structure. Integral to thecab and frame, the Rollover ProtectiveStructure (ROPS) is resiliently mountedto the frame to isolate the operator fromvibration for a more comfortable ride.

Suspension Seat. Suspension seatprovides optimal driving position andenhances operator comfort, all shift long.

8

Setting a new industry standard for comfort and efficiency.

Operator Station

STIC™ Steering Control. STIC™combines directional selection, gearselection and steering into a singlelever for maximum responsiveness.Simple side-to-side motion turnsmachine right or left. Transmissionshifting (forward/neutral/reverse)is controlled using a three positionrocker switch. The thumb operatedupshift and downshift button controlsmanual shifting.

Optional Enclosed Cab. Optionalsound-suppressed ROPS cab providesa quiet, secure working environment.Large window openings offer excellentvisibility in all directions. Encloseddesign provides fresh, pressurized,temperature-controlled air circulationwith air-conditioned comfort and a morecomfortable working environment.

Optional Ride Control. The system usesa nitrogen filled oil accumulator in thehydraulic lift circuit to act as a shockabsorber for the bucket and lift arms.The lift arm bucket response to movementis dampened over rough ground, reducingfore and aft pitch, improving cycletimes and load retention. A smoother,more comfortable ride gives operatorsthe confidence to travel at higher speedsduring load and carry applications.

Monitoring System. CaterpillarElectronic Monitoring System (CEMS)continuously provides critical machinedata to keep the machine performing attop production levels. A warning systemalerts the operator of immediate orimpending problems with engine oilpressure, parking brake engagement,brake oil pressure, electrical system,low fuel, hydraulic oil temperature,coolant level/temperature, transmissionoil temperature and impending brakeapplication.

• Message Center. Three-categorywarning system alerts operator ofabnormal machine health conditions.

• Gauge Cluster. Maintains a constantdisplay of vital machine functions,including: engine coolant temperature,brake oil temperature, air systempressure and fuel level.

• Speedometer/Tachometer Module.Monitors three systems: engine speed,ground speed and gear indicator.

9

Buckets. Aggressive Cat bucket designsdeliver unmatched productivity in themost demanding applications.Underground mining buckets aredesigned for optimal loadabilityand structural reliability to increaseproductivity and help lower yourcost-per-ton.

Bucket Selection. Cat undergroundloader buckets are available in standardand penetration configurations to meeta range of loading, hauling anddumping conditions.

Bucket Capacities. Buckets areavailable in a range of sizes andcapacities to suit most material typesand densities.

Wear Packages. Weld-on wear platesin high wear areas are standard.Additional wear packages are available,including sacrificial wear strips andCat heel shrouds, protect the edgesfrom damage for longer bucket life andreduce the need for costly bucket rebuilds.

Cutting Edges. Cat half arrow and casthalf arrow cutting edges extend bucketlife in high wear applications.

10

BucketsCat buckets provide the flexibility to match the machine to the material and conditions.

Service Access. Easy access to dailyservice points simplifies servicingand reduces time spent on regularmaintenance procedures.

Ground-Level Access. Allowsconvenient servicing to all tanks,air filters, lubrication points andcompartment drains.

Air Filters. Radial seal air filters areeasy to change, reducing time requiredfor air filter maintenance.

Sight Gauges. Makes fluid levelschecks quick and easy.

Diagnostics. Cat Electronic Technician(Cat ET) Service Tool enables quickelectronic diagnosis of machineperformance and key diagnostic datafor effective maintenance and repairs.

Sealed Electrical Connectors. Electricalconnectors are sealed to lock out dustand moisture. Harnesses are externallysealed with flame resistant sleeves/coversfor protection. Wires are color andnumber coded for easy diagnosisand repair.

Scheduled Oil Sampling. S•O•SSM

sampling valves speed sampling andanalysis reliability.

11

ServiceabilityLess time spent on maintenance means more time being productive.

Commitment Makes the Difference.Cat dealers offer a wide range ofsolutions, services and productsthat help you lower costs, enhanceproductivity and manage your operationmore efficiently. Support goes farbeyond parts and service. From the timeyou select a piece of Cat equipmentuntil the day you rebuild, trade or sell it,the support you get from your Cat dealermakes the difference that counts.

Dealer Capability. Cat dealers willprovide the level of support youneed, on a global scale. Dealer experttechnicians have the knowledge,experience, training and tooling necessaryto handle your repair and maintenanceneeds, when and where you need them.

Product Support. Cat dealers believesuperior products deserve superiorsupport. When Cat products reach thefield, they are supported by a worldwidenetwork of parts distribution facilities,dealer service centers, and technicaltraining facilities to keep your equipmentup and running. Cat customers rely onprompt, dependable parts availabilityand expertise through our global dealernetwork, ready to meet your needs 24/7.

Service Support. Every piece ofCat equipment is designed and builtto provide maximum productivityand operating economy throughoutits working life. Cat dealers offer awide range of service plans that willmaximize uptime and return on yourinvestment, including:

• Preventive Maintenance Programs

• Diagnostic Programs, such asScheduled Oil Sampling andTechnical Analysis

• Rebuild and Reman Options

• Customer Support Agreements

Technology Products. Cat dealers offera range of advanced technology productsdesigned to improve fleet efficiency,increase productivity, and lower costs.

www.cat.com. For more completeinformation on Cat products, dealerservices, and industry solutions, visitus on the web at www.cat.com.

Operation. With today’s complexproducts, equipment operators must havea thorough understanding of machinesystems and operating techniques tomaximize efficiency and profitability.Your Cat dealer can arrange trainingprograms to help operator’s improveproductivity, decrease downtime,reduce operating costs, enhance safety,and improve return on the investmentyou make in Cat products.

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Customer SupportCaterpillar dealers have what it takes to keep mining underground equipment productive.

Product Safety. Caterpillar has been andcontinues to be proactive in developingmining machines that meet or exceedsafety standards. Safety is an integralpart of all machine and systems designs.

Engine Shut Off Switch. A secondaryengine shutoff switch is located atground level.

Integral ROPS Cab. Integral to the caband frame, the ROPS is resilientlymounted to the frame to isolate theoperator from vibration for a morecomfortable ride.

Brake Systems. Four corner oil-cooledbraking system provides excellentcontrol. The service brake system isactuated by modulated hydraulic pressure,while the parking break function isspring applied and hydraulic released.This system assures braking in theevent of loss of hydraulic failure.

Standard Safety Features.

• Anti-skid upper deck surfaces

• Lower cab light

• Ground level compartmentsight glasses

• Increased visibility

• 3-point access to cab and machine

• Push out safety glass

• Suspension seat

• Inertia reel retractable seat belt

• Bucket control group safety pins

• Hot and cold side of engine

• Articulation lock

• Hinged belly guards

13

SafetyCaterpillar mining machines and systems are designed with safety as their first priority.

14 R2900G Underground Mining Loader specifications

Transmission

Forward 1 5 km/h 3.1 mphForward 2 8.8 km/h 5.5 mphForward 3 15.2 km/h 9.4 mphForward 4 25.3 km/h 15.7 mphReverse 1 6.2 km/h 3.9 mphReverse 2 10.9 km/h 6.8 mphReverse 3 18.6 km/h 11.6 mphReverse 4 26.4 km/h 16.4 mph

Hydraulic Cycle Time

Raise 9.2 SecondsDump 3.4 SecondsLower, empty, float down 3.1 SecondsTotal Cycle Time 15.7 Seconds

Bucket Capacities

Bucket Capacity – Std.* 7.2 m3 9.4 yd3

Bucket Width (over cutting edge) 3154 mm 124.2 inBucket Capacity – Optional* 8.3 m3 10.9 yd3

Bucket Capacity – Optional* 8.9 m3 11.6 yd3

* High penetration bucket versions also available.

Turning Dimensions

Outside Clearance Radius** 7323 mm 288.3 inInner Clearance Radius** 3383 mm 133.2 inAxle Oscillation 8ºArticulation Angle 42.5º

** Clearance dimensions are for reference only.

Engine

Engine Model Cat C15 ACERT™Rated Power 1900/1800 rpmGross Power – SAE J1995 321/333 kW 430/447 hpNet Power – SAE J1349 290/302 kW 389/405 hpNet Power – ISO 9249 288/300 kW 386/402 hpNet Power – 80/1269/EEC 321/333 kW 430/447 hpBore 137.2 mm 5.4 inStroke 171.5 mm 6.8 inDisplacement 15.2 L 927.9 in3

• Power ratings apply at a rated speed of 1900/1800 rpmwhen tested under the reference conditions for thespecified standard.

• Ratings based on SAE J1995 standard air conditions of 25° C(77° F) and 100 kPa (29.61 Hg) barometer. Power based onfuel having API gravity of 35 at 16° C (60° F) and an LHV of42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F).

• No engine derating required up to 591 m (1,938 ft) altitude.

• Compliant with U.S. Environmental Protection Agency Tier 3emissions standards.

Operating Specifications

Nominal Payload Capacity 17 200 kg 37,926 lbGross Machine Operating Weight 67 409 kg 148,611 lbStatic Tipping Load Straight 39 923 kg 88,015 lbAhead Lift Arms HorizontalStatic Tipping Load Full Turn 34 069 kg 75,109 lbLift Arms HorizontalBreakout Force (SAE) 27 346 kg 60,298 lb

Weights

Empty 50 209 kg 110,692 lbFront Axle 23 057 kg 50,832 lbRear Axle 27 152 kg 59,860 lb

Loaded 67 409 kg 148,611 lbFront Axle 50 220 kg 110,716 lbRear Axle 17 189 kg 37,895 lb

15R2900G Underground Mining Loader specifications

Service Refill Capacities

Engine Crankcase 34 L 9 galTransmission 62 L 16.4 galHydraulic Tank 140 L 37 galCooling System 75 L 19.8 galFront Differential and Final Drives 119 L 31.4 galRear Differential and Final Drives 127 L 33.5 galFront Differential and Final Drives 159 L 42 gal(with Axle Oil Cooling System)Rear Differential and Final Drives 167 L 44.1 gal(with Axle Oil Cooling System)Fuel Tank 854 L 225.6 galSecondary Fuel Tank (If Equipped) 571 L 150.8 gal

Tires

Tire Size 29.5 � 29 34 PLY STMS

Standards

Brakes ISO3450, AS2958.1,CAN-CSA424.30-M90

Cab/FOPS ISO3449, SAEJ231,AS2294.3, EN13627

Cab/ROPS ISO3471, SAEJ1040,AS2294.2, EN13510

16 R2900G Underground Mining Loader specifications

6

11

7

8 12 13

10

9

5

21

1415

16

17

18

19

20

4

3

2

1

249-4899 (Standard Bucket)* 249-4892* 249-4893*Bucket capacity 7.2 m3 (9.4 yd3) 8.3 m3 (10.9 yd3) 8.9 m3 (11.6 yd3)Bucket width over cutting edge 3054 mm (10 ft) 3154 mm (10 ft 4 in) 3354 mm (11 ft)

1 Overall height – bucket raised 6179 mm (20 ft 3 in) 6232 mm (20 ft 6 in) 6232 mm (20 ft 6 in)2 Maximum dump height 5427 mm (17 ft 10 in) 5427 mm (17 ft 10 in) 5427 mm (17 ft 10 in)3 Bucket pin height at maximum lift 4539 mm (14 ft 11 in) 4539 mm (14 ft 11 in) 4539 mm (14 ft 11 in)4 Dump clearance at maximum lift 2868 mm (9 ft 5 in) 2735 mm (9 ft) 2724 mm (8 ft 11 in)5 Digging depth 52 mm (2 in) 65 mm (2.6 in) 65 mm (2.6 in)6 Dump angle at maximum lift 42° 42° 42°7 Reach 1656 mm (5 ft 5 in) 1803 mm (5 ft 11 in) 1817 mm (6 ft)8 Centerline of front axle 1890 mm (6 ft 2 in) 1890 mm (6 ft 2 in) 1890 mm (6 ft 2 in)

to centerline of hitch9 Overall length (digging) 11 302 mm (37 ft 1 in) 11 507 mm (37 ft 9 in) 11 525 mm (37 ft 10 in)

10 Overall length (tramming) 10 949 mm (35 ft 11 in) 11 073 mm (36 ft 4 in) 11 083 mm (36 ft 4 in)11 Ground clearance 465 mm (1 ft 6 in) 465 mm (1 ft 6 in) 465 mm (1 ft 6 in)12 Centerline of back axle 1890 mm (6 ft 2 in) 1890 mm (6 ft 2 in) 1890 mm (6 ft 2 in)

to centerline of hitch13 Length – rear axle to bumper 3572 mm (11 ft 9 in) 3572 mm (11 ft 9 in) 3572 mm (11 ft 9 in)14 Height to top of hood 2371 mm (7 ft 9 in) 2371 mm (7 ft 9 in) 2371 mm (7 ft 9 in)15 Height to top of ROPS 2886 mm (9 ft 6 in) 2886 mm (9 ft 6 in) 2886 mm (9 ft 6 in)16 Tunnel clearance width** 4500 mm (14 ft 9 in) 4500 mm (14 ft 9 in) 4500 mm (14 ft 9 in)17 Tunnel clearance height** 4500 mm (14 ft 9 in) 4500 mm (14 ft 9 in) 4500 mm (14 ft 9 in)18 Overall tire width 2898 mm (9 ft 6 in) 2898 mm (9 ft 6 in) 2898 mm (9 ft 6 in)19 Overall width excluding bucket 3010 mm (9 ft 10 in) 3010 mm (9 ft 10 in) 3010 mm (9 ft 10 in)20 Overall width including bucket 3176 mm (10 ft 5 in) 3176 mm (10 ft 5 in) 3176 mm (10 ft 5 in)21 Wheelbase 3780 mm (12 ft 5 in) 3780 mm (12 ft 5 in) 3780 mm (12 ft 5 in)

**Dimensions shown with standard material bucket sizes. High penetration bucket versions also available.**Clearance dimensions are for reference only.

DimensionsAll dimensions are approximate.

17R2900G Underground Mining Loader specifications

E – Empty 50 209 kg (110,711 lb)

L – Loaded 67 409 kg (148,637 lb)

Gradeability/Speed/Rimpull

To determine gradeability performance: Read from grossweight down to the percent of total resistance. Total resistanceequals actual percent grade plus rolling resistance. As a generalguide use 2% for rolling resistance in underground applicationsor refer to the Caterpillar Performance Handbook. From the

total resistance point, read horizontally to the curve withthe highest obtainable gear, then down to maximum speed.Usable rimpull will depend upon traction available andweight on drive wheels.

Typical Field Empty Weight

Loaded Weight

E L

0

10

20

30

40

50

60

70

80

90

100

0 2 4 6 8 10 12 14 16 18 20

Rim

pull

N x

100

0 (lb

s x

1000

)

mph

km/h3.2 6.4 9.6 12.9 16.0 19.3 22.5 25.7 28.9 32.1

lbf N445

400

356

311

267

222

178

133

89

44

Gross Weight

Speed

Tota

l Res

ista

nce

(Gra

de p

lus

Rolli

ng)

1st Gear

2nd Gear

3rd Gear

4th Gear

Direct Drive

29.5x29 Tires

25%

20%

15%

10%

5%

18 R2900G Underground Mining Loader specifications

Standard EquipmentStandard equipment may vary. Consult your Caterpillar dealer for details.

Other Standard EquipmentAuto Park BrakeBrake Axle CoolingBucket Positioner, Return To DigCatalytic Exhaust Purifier/Muffler GroupEngine And Transmission Belly GuardsFenders, Front, RearFirewallHardox 450 Bucket LipInterlock System Includes ABARear Frame Protection Wear Bars 100 � 50 mm (4 � 2 in)Semi Centralized Lubrication PointsSwing Out Radiator GrillTires, STMS (L5) 29.5 � 29 34-Ply

ElectricalAlternator, 95-ampBattery Disconnect Switch, Ground LevelCorrosive Protection SprayDiagnostic ConnectorElectric Starting, 24-voltEngine Shutdown SwitchExternal Lighting System, Front, RearLow Maintenance BatteriesReversing AlarmStarting And Charging System

Operator EnvironmentCaterpillar Electronic Monitoring System (CEMS)Electric HornsGauges

Engine Coolant TemperatureFuel LevelHydraulic OilSpeedometerTachometer

Pilot Hydraulic Implement Controls, Single JoystickROPS/FOPS StructureSuspension Seat With Retractable Seat BeltWheel Steer

Power TrainCat C15 ATAAC Diesel Engine with ACERT™Technology, 6-CylinderLong Life CoolantFull Hydraulic Enclosed Wet Multiple-Disc Brakes (SAFR™)Planetary Powershift Transmission with Automatic

Shift Control, 4 Speed Forward/4 Speed ReverseEngine Air Intake PrecleanerTorque ConverterTransmission NeutralizerFuel Priming AidCrossflow radiator

19R2900G Underground Mining Loader specifications

Optional EquipmentOptional equipment may vary. Consult your Caterpillar dealer for details.

Heater, Air ConditioningOil Sample AdaptersOperators Station

Air ConditioningPressurizerDome LightRadio Ready

Payload Control System (PCS)Remote Activated Fire SystemRemote Control Systems

ProportionalRetrieval attachment

Reversible Steering, Wheel SteerRide Control SystemSeat CoversSecondary Steering SystemService Tools STIC™ SteeringTee Seat

Alternative Tire ArrangementsAutomatic Lube SystemAuxiliary Start ReceptacleBrake LightBrake Pressure GaugesBrake Release ArrangementsBucket Heel ShroudsBucket Sacrificial Wear Strip PackageCentralized Lube System, ManualDraw Bar Attachment, Bolt-onElectronic Access ModuleFast Fill System

CoolantEngineFuelHydraulicTransmission

Fire ExtinguishersFire Suppression SystemFront Light Protectors

R

For more complete information on Cat products, dealer services,and industry solutions, visit us on the web at www.cat.com

© 2007 CaterpillarAll Rights Reserved

Printed in U.S.A.

Materials and specifications are subject to change without notice.Featured machines in photos may include additional equipment.

See your Caterpillar dealer for available options.

CAT, CATERPILLAR, their respective logos and “Caterpillar Yellow,”as well as corporate and product identity used herein, are

trademarks of Caterpillar and may not be used without permission.AEHQ5608-01 (8-07)

R2900G Underground Mining Loader