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EngineEngine Model Cat C6.4 ACERTNet Flywheel Power 103 kW 138 hp

WeightsOperating Weight 21 450 kg 47,290 lbStd. Undercarriage

Heavy Duty Reach boom, R2.9B1 (9 ft 6 in) ReinforcedStick, 0.9 m3 (1.2 yd3) General Purpose Bucket, 800 mm(32 in) Shoes

320DHydraulic Excavator

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320D Hydraulic ExcavatorThe D Series incorporates innovations for improved performance and versatility.

Cat 320D Total Solutions

With Caterpillar and its extensivedealer network,we offer a wide varietyof solutions to the issues you face daily.

pg. 12

Complete Customer Support

Your Cat dealer offers a wide rangeof services that can be set up under acustomer support agreement when you

purchase your equipment. The dealerwill help you choose a plan that can covereverything from machine configurationto eventual replacement. pg. 11

Operator Station

Provides maximum space, widervisibility and easy access to switches.The monitor is a full-color graphicaldisplay that allows the operator tounderstand the machine informationeasily. Overall, the new cab providesa comfortable environment for theoperator. pg. 6

Structures

Caterpillar design and manufacturingtechniques assure outstanding durabilityand service life from these importantcomponents. pg. 5

Engine and Hydraulics

ACERT Technology works at thepoint of combustion to optimize engineperformance and provide low exhaustemissions with exceptional performancecapabilities and proven reliability.By combining excellent fuel efficiencyand maximized production, 320D willprovide unmatched profit potential. pg. 4

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New Feature

3

Service and Maintenance

Fast, easy service has been designedin with extended service intervals,advanced filtration, convenient filteraccess and user-friendly electronicdiagnostics for increased productivityand reduced maintenance costs. pg. 10

Work Tools Attachments

A variety of work tools, includingbuckets, couplers, hammers, and shearsare available through Cat Work Tools.pg. 9

Booms and Sticks

The 320D offers the most comprehensivechoice of front linkage options andattachments to best meet your joband application. pg. 8

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Cat C6.4.The Cat C6.4 with ACERTTechnology introduces a series of evolutionary, incremental improvementsthat provide breakthrough enginetechnology. The building blocks of ACERT Technology are fuel delivery,air management and electronic control.ACERT Technology optimizes engineperformance while meeting global lowemission regulations. With its proventechnology, robust components andprecision manufacturing, you can counton this engine to power up at starttime and keep working productivelyall shift long.

Automatic Engine Speed Control.Automatic Engine Control withconvenient one-touch command.During no-load or light-load conditions,the Automatic Engine Speed reducesengine speed. This maximizes fuelefficiency and reduces sound levels.

Air Cleaner. The radial seal air filterfeatures a double-layered filter core formore efficient filtration and is located ina compartment behind the cab. A warningis displayed on the monitor when dustaccumulates above a preset level.

Low sound, low vibration. By design,

the Cat C6.4 improves operator comfortby reducing sound and vibration.

Hydraulic System. The hydraulic systempressure has been increased to 35,000 kPa,attributing to the following performanceenhancements:

5% greater stick and bucket forcesto handle those tough diggingapplications.

Increased drawbar pull to 206 kN,gives you better ability to travel up

slopes, better spot turning capabilityand more tractive effort.

Component Layout. The 320D hydraulicsystem and component locations havebeen designed to provide a high level

of system efficiency. The main pumps,control valves and hydraulic tank arelocated close together to allow for shortertubes and lines between components,which reduce friction loss, and pressuredrops in the lines. The layout furtherprovides greater operator comfort byplacing the radiator on the cab side of the upper structure. This allows incomingair to enter the engine compartmentfrom the operator side and hot air andcorresponding engine sound to exit onthe opposite side away from the operator.

This reduces engine compartment heatand sound being transmitted to theoperator.

Pilot System. The pilot pump isindependent from the main pumpsand controls the front linkage, swingand travel operations.

Hydraulic Cross Sensing System.The hydraulic cross sensing systemutilizes each of two hydraulic pumpsto 100 percent of engine power, underall operating conditions. This improvesproductivity with faster implementspeeds and quicker, stronger pivot turns.

Auxiliary Hydraulic Valve. The auxiliaryvalve is standard on the 320D. ControlCircuits are available as attachments,allowing for operation of high andmedium pressure tools such as shears,grapples, hammers, pulverizers, multi-processors and vibratory plate compactors.

Boom and Stick Regeneration Circuit.Boom and stick regeneration circuitsaves energy during boom-down andstick-in operation which increasesefficiency, reduces cycle times andpressure loss for higher productivity,lower operating costs and increased fuelefficiency.

Hydraulic Cylinder Snubbers. Snubbersare located at the rod-end of the boomcylinders and both ends of the stick cylinders to cushion shocks whilereducing sound levels and extendingcomponent life.

4

Engine and HydraulicsThe Cat 320D delivers the power and control that you need in order to get the job donequickly and efficiently in all applications.

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Carbody Design and Track RollerFrames. X-shaped, box-section carbodyprovides excellent resistance to torsionalbending. Robot-welded track rollerframes are press-formed, pentagonalunits to deliver exceptional strengthand service life.

Main Frame. The main frame utilizeshigh-tensile strength steel and one-pieceswing table, which improves strengthand reliability.

Undercarriage. Durable Cat undercarriageabsorbs stresses and provides excellentstability.

Rollers and Idlers. Sealed and lubricatedtrack rollers, carrier rollers, and idlersprovide excellent service life, to keepthe machine in the field longer.

Standard Undercarriage. The standardundercarriage is well suited forapplications that require frequentrepositioning of the machine, haverestricted working space or uneven,rocky terrain.

5

StructuresCaterpillar excavators are designed to handle the most rugged operating conditions while

providing long life and value.

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Designed for comfort, simple and easy operation, the 320D allows the operator to focuson production.

Operator Station

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Booms, Sticks and Attachments.Designed for maximum flexibility,productivity and high efficiency on

all jobs, the 320D offers a wide rangeof configurations suitable for a varietyof applications.

Caterpillar Booms. Caterpillar boomshave large cross-sections and internalbaffle plates to provide long lifedurability.

Caterpillar Sticks. Caterpillar sticksare made of high-tensile strength steelusing a large box section design withinterior baffle plates and an additionalbottom guard.

Heavy Duty Reach Boom.The reachboom features an optimum design thatmaximizes digging envelopes with the

R2.9B1 stick. Heavy duty reach boomprovides additional strength and isrecommended for tough applications.

The B1-family bucket associatedwith this stick has enough capacityfor excellent reach and depth intrenching and general constructionapplications.

R2.9B1 Reinforced Stick

This stick provides the most versatilefront linkage. The stick is a good fitfor all 11 ton dump trucks withregard to reach and bucket capacityand delivers good stability.

R2.5B1 Heavy Duty Stick

This stick has thicker plates and isused for heavy-duty applications.

Linkage Pins. All the pins in the frontlinkages have thick chrome plating,giving them high wear and corrosionresistance.

Bucket Linkage. The power link improves durability, increases machine-lifting capability in key lifting positionsand is easier to use than compared tothe previous lifting eye.

8

Booms and Sticks Designed-in flexibility to help bring higher production and efficiency to all jobs.

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Service Life. Caterpillar buckets increaseservice life and reduce repair costs.

Dual radius design for increasedheel clearance and reduced wear

Robot welding of hinge assemblyfor increased weld penetrationand longer life

Incorporates the new aggressiveand easier to install, K SeriesGET tool system

High strength and heat-treated steelthat exceeds T-1 in high wear areas

General Purpose Bucket (GP). Generalpurpose (GP) bucket for digging in low-impact, moderately abrasive materialssuch as dirt, loam, gravel and clay.

Heavy-Duty Buckets. Heavy-duty (HD)buckets are used for a wide rangeof moderately abrasive applicationssuch as mixed dirt, clay and rock.HD buckets have best loading anddumping characteristics and will emptyeasier in cohesive material. More robustconstruction than the GP buckets.

Heavy-Duty Power (HDP) Buckets.

For use in moderately abrasiveapplications where breakout force andcycle times are critical. Maximizes tipforce and improves cycle times in mostmaterials. Not for use in sticky materialconditions. Cutting edge and GETare up-sized.

Heavy-Duty Rock Buckets. Heavy-dutyrock for aggressive bucket loading inhighly abrasive application such as shotrock and granite. Features include:

Thickest wear plates to extend the

life of bucket in severe applications Side wear plated extend further up

the side of the bucket for maximumprotection in rocky soils

Buckets accept sidebar protectors forbest sidebar protection, or sidecuttersfor best fill characteristics andbucket wear protection

Caterpillar Ground Engaging Tools(GET).The new Caterpillar K SeriesGET is featured on the new buckets.This new GET system uses a hammerlessvertical retainer, which is easier toremove and install than the Cat J Seriespin. The new tooth shapes are moreaggressive and offer better penetrationthan the previous generation of tips.There are also a variety of side cuttersand sidebar protectors to matchoperating conditions.

Tool Control System. The optional toolcontrol system maximizes work toolproductivity by configuring hydraulicflow, pressure, and operator controlsto match a specific work tool. Systemversatility enables a wide range of tools to be used.

Pin-Grabber Plus Quick Coupler.Pin-Grabber Plus Quick Couplersmultiply the versatility and utility of Cat Excavators by allowing them topick up and use virtually any work tool equipped with standard pins.

Dedicated Quick Coupler. Quick Couplers increase the versatilityof Cat excavators; allowing the easeof changing work tools to meet job

requirements at hand in a matter of minutes or seconds. Dedicated quick coupler buckets have no loss of tipradius, and develop maximumbreakout force.

9

Work Tools AttachmentsThe 320D has an extensive selection of work tools to optimize machine performance.

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Ground Level Service. The design andlayout of the 320D was made with theservice technician in mind. Many servicelocations are easily accessible at groundlevel allowing critical maintenance toget done quickly and efficiently.

Air Filter Compartment. The air filterfeatures a double-element constructionfor superior cleaning efficiency.When the air cleaner plugs, a warningis displayed on the monitor screeninside the cab.

Pump Compartment. A service dooron the right side of the upper structureallows ground-level access to the pumpand pilot filter.

Radiator Compartment. The left rearservice door allows easy access to theengine radiator, oil cooler and air-to-air-

after-cooler. A reserve tank and draincock are attached to the radiator forsimplified maintenance.

Capsule Filter. The hydraulic returnfilter, a capsule filter, is situated outsidethe hydraulic tank. This filter preventscontaminants from entering the systemwhen hydraulic oil is changed andkeeps the operation clean.

Greasing Points. A concentrated remotegreasing block on the boom deliversgrease to hard-to-reach locations on

the front.Fan Guard. Engine radiator fan iscompletely enclosed by fine wire mesh,reducing the risk of an accident.

Anti-Skid Plate. Anti-skid plate coverstop of storage box and upper structureto prevent slipping during maintenance.

Diagnostics and Monitoring. The 320Dis equipped with S OSSM sampling portsand hydraulic test ports for the hydraulicsystem, engine oil, and for coolant.

A test connection for the Cat ElectronicTechnician (Cat ET) service tool islocated behind the cab.

Extended Service Interval. 320D serviceand maintenance intervals have beenextended to reduce machine servicetime and increase machine availability.

10

Service and MaintenanceSimplified service and maintenance features save you time and money.

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Product Support. You will find nearlyall parts at our dealer parts counter.Cat dealers utilize a worldwidecomputer network to find in-stock parts to minimize machine down time.Save money with remanufacturedcomponents.

Machine Selection. Make detailedcomparisons of the machines you areconsidering before you buy. What are the

job requirements, machine attachmentsand operating hours? What productionis needed? Your Cat dealer can providerecommendations.

Purchase. Look past initial price.Consider the financing options availableas well as day-to-day operating costs.This is also the time to look at dealerservices that can be included in the costof the machine to yield lower equipmentowning and operating costs over thelong run.

Customer Support Agreements.Cat dealers offer a variety of productsupport agreements, and work withcustomers to develop a plan the bestmeets specific needs. These plans cancover the entire machine, includingattachments, to help protect thecustomers investment.

Operation. Improving operatingtechniques can boost your profits.Your Cat dealer has videotapes, literatureand other ideas to help you increaseproductivity, and Caterpillar offerscertified operator training classes tohelp maximize the return on yourinvestment.

Maintenance Services. Repair optionprograms guarantee the cost of repairsup front. Diagnostic programs suchas Scheduled Oil Sampling, CoolantSampling and Technical Analysis helpyou avoid unscheduled repairs.

Replacement. Repair, rebuild, orreplace? Your Cat dealer can helpyou evaluate the cost involved soyou can make the right choice.

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Complete Customer SupportCat dealer services help you operate longer with lower costs.

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More Than a Machine. The Caterpillar320D excavator provides all the elementsto give you the lowest cost to own andoperate. At the end of the day, it allcomes down to how much work you gotdone and how much did it cost you.Caterpillar and the 320D offer you thetools to help lower you owning andoperating costs:

Better Fuel Efficiency In addition,Economy mode use can result in upto 15% less fuel consumptioncompared to the C Series.

More Performance Finish the jobfaster. Increased hydraulic systempressure creates 5% greater stick andbucket forces and increased drawbarpull.

Proven Reliability and Durability Maximizes your up-time and provideslong life and value. The 320D hasendured thousands of hours of operation, through comprehensivefield follow program, in a varietyof applications throughout the world.

Ease of Operation Takes thecomplication out of operating.The monitor gives you vital operatingand performance information, alerts intext, all in a simple, easy to navigateformat in one of 27 languages,including Bahasa.

More Versatility Takes thecomplication out of operating.The monitor gives you vitaloperating and performanceinformation, alerts in text, allin a simple, easy to navigateformat in one of 27 languages,including Bahasa.

Better Serviceability Making iteasier to perform service and routinemaintenance. The 320D sets itself apart with the level of ground levelaccess and maintenance features.

Extended Maintenance Intervals Less out of pocket expenses overthe life of the machine. The 320Dprovides industry leading maintenanceintervals that provide less cost overthe life of the machine.

More Solutions Caterpillar and itsdealer network have the ability tomatch a solution best suited to yourneeds. Your Cat dealer helps youoperate longer with lower costs, byassisting you with a plan that cancover everything from machineconfiguration to eventual replacement.

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Cat 320D Total SolutionsYour excavator is more than a piece of equipment; its your livelihood.

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Hydraulic System

Main Implement System 205 L/min 54 gal/minMaximum Flow (2x)Maximum pressure Equipment 35 000 kPa 5,076 psiMaximum pressure Travel 35 000 kPa 5,076 psiMaximum pressure Swing 25 000 kPa 3,626 psiPilot System Maximum flow 32.4 L/min 8.6 gal/minPilot System Maximum pressure 3900 kPa 566 psi

Boom Cylinder Bore 120 mm 4.7 inBoom Cylinder Stroke 1260 mm 49.6 inStick Cylinder Bore 140 mm 5.5 inStick Cylinder Stroke 1504 mm 59.2 inB1 Family Bucket Cylinder Bore 120 mm 4.7 inB1 Family Bucket Cylinder Stroke 1104 mm 43.5 in

Sound Performance

Performance ANSI/SAE J1166 OCT 98

When properly installed and maintained, the cab offered byCaterpillar, when tested with doors and windows closedaccording to ANSI/SAE J1166 OCT 98, meets OSHA andMSHA requirements for operator sound exposure limits ineffect at time of manufacture.

Hearing protection may be needed when operating with anopen operator station and cab (when not properlymaintained or doors/windows open) for extended periods orin noisy environment.

Standards

Brakes SAE J1026 APR90Cab/FOGS SAE J1356 FEB88

Track

Standard w/Standard 800 mm 32 inUndercarriage

Dimensions

Transport width 3000 mm 118.11 in

Engine

Engine Model Cat C6.4 ACERTNet Flywheel Power 103 kW 138 hpNet Power ISO 9249 103 kW 138 hpBore 102 mm 4.02 inStroke 130 mm 5.12 inDisplacement 6.37 L 389 in3

The Cat C6.4 meets exhaust emissions equivalent to formerUSA EPA Tier 2 and EU Stage II engine emissions regulations.

Net power advertised is the power available at the flywheelwhen the engine is equipped with fan, air cleaner, mufflerand alternator.

No engine derating needed up to 2300 m (7,500 ft).

Weights

Operating Weight Std. 21 450 kg 47,290 lbUndercarriageCounterweight 3860 kg 8,510 lb

Heavy Duty Reach boom, R2.9B1 (9 ft 6 in) Reinforced Stick,0.9 m3 (1.2 yd3) General Purpose Bucket, 800 mm (32 in) Shoes

Service Refill Capacities

Fuel Tank Capacity 410 L 108 galCooling System 25 L 6.6 galEngine Oil 30 L 8 galSwing Drive 8 L 2.1 galFinal Drive (each) 10 L 2.6 gal

Hydraulic System (including tank) 260 L 69 galHydraulic Tank 120 L 32 gal

Swing Mechanism

Swing Speed 11.5 rpmSwing Torque 62 kNm 45,600 lb ft

Drive

Maximum Drawbar Pull 206 kN 46,310 lbMaximum Travel Speed 5.5 km/h 3.4 mph

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9

10

1

2

3

54

6

87

DimensionsAll dimensions are approximate.

Boom Options Reach

5.68 (18'7")Stick Options R2.9B1 m (9'7")

Std/SA1 Shipping Height 3030 mm (9'11")2 Shipping Length 9460 mm (31'0")3 Tail Swing Radius 2750 mm (9'0")4 Length to Center of Rollers 3265 mm (10'9")5 Track Length 4075 mm (13'4")6 Ground Clearance 450 mm (1'6")7 Track Gauge 2200 mm (7'3")8 Transport Width 800 mm Shoes

3000 mm (9'10")9 Cab Height 2950 mm (9'8")10 Counterweight Clearance 1020 mm (3'4")

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Reach Excavator Working RangesReach (R) boom configuration

Boom Options Reach5.68 m (18'7")

Stick Options R2.9B1 m (9'7")1 Maximum Digging Depth 6580 mm (21'7")2 Maximum Reach at Ground Level 9710 mm (31'10")3 Maximum Cutting Height 9360 mm (30'9")4 Maximum Loading Height 6640 mm (21'9")5 Minimum Loading Height 2310 mm (7'7")6 Maximum Depth Cut for 2440 m (8') Level Bottom 6400 mm (21'0")7 Maximum Vertical Wall Digging Depth 5800 mm (19'0")

Bucket Digging Force (SAE) 137.5 kN (30,910 lb)(ISO) 155.6 kN (34,980 lb)

Stick Digging Force (SAE) 105.6 kN (23,740 lb)(ISO) 109.9 kN (24,710 lb)

All measurements are approximate

2

3

1 7 6

4

5

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

Bucket 1.0m 3 Heavy Duty Rock (use with Heavy-duty 2.9B1 stick)

Forestry fixed grapple (requires Reinforced 2.9B1 stick only)

Tips, Side cutters and Side protectors

Bucket 0.9 m 3 General Purpose(use with Heavy-duty or Reinforced 2.9B1 sticks)

Bucket 1.0m 3 Heavy Duty (use with Heavy-duty 2.9B1 stick)

Bucket 1.0m3

Heavy Duty Power(use with Heavy-duty 2.9B1 stick)

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R

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

2007 CaterpiAll Rights Reserv

Printed in U.S

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, ACERT,Caterpillar Yellow and tPOWER EDGE trade dress, as well as corporate and product identity used herein,

are trademarks of Caterpillar and may not be used without permission.

AEHQ5892 (5-07)

PTNR

320D Hydraulic Excavator