®®

EngineEngine Model Cat ® C6.4 ACERT™ Net Flywheel Power 103 kW 138 hp

WeightsOperating Weight 23 600 kg 52,040 lb

• Reach boom, R2.9B1 (9 ft 6 in) Stick, 0.8 m3 (1.0 yd3)Bucket, 600 mm (24 in) Shoes

321D LCRHydraulic Excavator

2

321D LCR Hydraulic ExcavatorThe D Series incorporates innovations for improved performance and versatility.

The Caterpillar ® 321D LCR excavatorprovides all the elements to give you thelowest cost to own and operate. At the end ofthe day, it all comes down to how much workyou got done and how much did it cost you.Caterpillar and the 321D LCR offer you thetools to help lower your owning andoperating costs.

Versatility

Caterpillar offers a wide variety offactory-installed attachments thatenhance performance and job sitemanagement. pg. 12

Work Tools – Attachments

A variety of work tools, includingbuckets, couplers, hammers, grapplesand hydraulic thumbs are availablethrough Cat® Work Tools. pg. 11

✔

Hydraulics

The hydraulic system has been designedto provide reliability and outstandingcontrollability. An optional ToolControl System provides enhancedflexibility. pg. 6

C6.4 with ACERT™ Technology

ACERT™ Technology works at thepoint of combustion to optimize engineperformance and provide low exhaustemissions to meet various emissionregulations, with exceptionalperformance capabilities and provenreliability. By combining excellent fuelefficiency and maximized production,321D LCR will provide unmatchedprofit potential. pg. 5

✔

Compact Radius

The 321D LCR is a “Compact Radius”machine developed so that it can workin the narrow job-site. The cylindricalupper frame and cylindrical operatorstation, allow the 321D LCR to rotatein the narrower job-sites. pg. 4

✔ New Feature

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Complete Customer Support

Your Cat® dealer offers a wide rangeof services that can be set up under acustomer support agreement when youpurchase your equipment. The dealerwill help you choose a plan that can covereverything from machine configurationto eventual replacement. pg. 14

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. 13

✔

Booms, Sticks and Bucket Linkages

The pins and bushings provide1,000 hour greasing intervals for boomand stick linkages under normal jobconditions. pg. 10

Operator Comfort

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. 8

✔

Structures

Caterpillar® design and manufacturingtechniques assure outstanding durabilityand service life from these importantcomponents. pg. 7

Compact Radius. The 321D LCR featuresa compact radius design, which makesit ideal for working in space restrictedareas such as: close to buildings, roadconstruction – limiting lane closuresor logging roads. The tail swing is just1.68 m (5'6") as compared to the 2.75 m(9'0") on the 320D. When rotated90 degrees and working over the side,a minimal amount of counterweightextends beyond the track width.

Operator Confidence. Due to thecompact working envelope, operatorscan work confidently knowing that thecounterweight will not swing into anyobject behind them.

Comfort. The cab is a comfortable placeto work, with low sound levels, goodvisibility and convenient access toswitches and controls. Additionally, thecab offers many of the same amenitiesand options found in the cab of the320D/320D LRR.

Working Envelope. To further minimizethe working envelope, the boom isrepositioning more towards the centerof the machine as compared to a standardexcavator. This reduces the front swingradius when the boom is pulled all theway up and the stick brought incompletely. This design also increasesthe lift capacity over the front as it hasa better mechanical advantage whencompared to a standard excavator.

4

Compact RadiusThe 321D LCR delivers exceptional performance and comfort.

Cat C6.4. The Cat C6.4 with ACERT™Technology introduces a series ofevolutionary, incremental improvementsthat provide breakthrough enginetechnology. The building blocks ofACERT 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 start timeand keep working productively allshift long.

Performance. The C6.4 engine withACERT™ Technology, provides aspeed and efficiency advantage in highproduction applications. By combiningexcellent fuel consumption of theC6.4 engine with the Economy Mode.Customers can balance the demands ofperformance and fuel economy to suittheir requirements and application.

Automatic Engine Speed Control.The two-stage, one-touch control reducessound levels and fuel consumption.

ADEM™ A4 Engine Controller.The ADEM A4 electronic controlmodule manages fuel delivery to get thebest performance per liter of fuel used.The engine management system providesflexible fuel mapping, allowing theengine to respond quickly to varyingapplication needs. It tracks engine andmachine conditions while keeping theengine operating at peak efficiency.

Electronic Control Module.The Electronic Control Module (ECM)works as the “brain” of the engine’scontrol system, responding quickly tooperating variables to maximize engineefficiency. Fully integrated with sensorsin the engine’s fuel, air, coolant, andexhaust systems, the ECM stores andrelays information on conditions suchas rpm, fuel consumption, and diagnosticinformation.

Fuel Delivery. The Cat C6.4 featureselectronic controls that govern the fuelinjection system. Multiple injectionfuel delivery involves a high degreeof precision. Precisely shaping thecombustion cycle lowers combustionchamber temperatures, generatingfewer emissions and optimizing fuelcombustion. This translates into morework output for your fuel cost.

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C6.4 with ACERT™ TechnologyThe Cat ® C6.4 gives the 321D LCR exceptional power and fuel efficiency unmatched in theindustry for consistently high performance in all applications.

Component Layout. To optimizeefficiency of hydraulic performance,the hydraulic components are locatedclose together, which reduces frictionloss and pressure drops in the lines.

Pilot System. The pilot pump isindependent from the main pumps andcontrols the front linkage, swing andtravel operations.

Hydraulic Cross Sensing System.The hydraulic cross sensing systemutilizes each of two hydraulic pumps to100 percent of engine power, under alloperating conditions. This improvesproductivity with faster implementspeeds and quicker, stronger pivot turns.

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 increasedfuel efficiency.

Auxiliary Hydraulic Valve. The auxiliaryvalve is standard on the 321D LCR.Control Circuits are available asattachments, allowing for operation ofhigh and medium pressure tools such asshears, grapples, hammers, pulverizers,multi-processors and vibratory platecompactors.

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

System Pressure. System pressure hasbeen increased to 35 000 kPa (5,076 psi),which attributes to improvedperformance:

• Increased stick and bucket forces(up 7% higher than the 321C LCR)to better handle those tight diggingconditions

• More drawbar pull (206 kN –46,300 lb) to provide more abilityto climb slopes, easier spot turnsand improved travel in poorunderfoot conditions

• More lift capacity, generally overthe front where you are generallyhydraulically limited

Optional Heavy Lift. With the additionof an optional Heavy Lift, systempressure is increased to 36 000 kPa(5,220 psi), giving even more liftcapacity over the front. Heavy Lift isactivated by depressing the soft switchon the right hand console. As thepressure increases, the engine speedis reduced, which allows better controlwhile lifting objects.

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HydraulicsCat ® hydraulics deliver power and precise control to keep material moving.

Robust Undercarriage. A solid foundationbuilt tough to absorb the stresses ofeveryday work.

• Rollers and idlers are sealed andlubricated to extend service life.

• Track links are assembled andsealed with grease to decreaseinternal bushing wear and increaselife by as much as 25%, whencompared to dry seal undercarriages.

• Spring recoil system stroke has beenincreased to better relieve excesstrack tension, which can occur whenmaterial builds up between the trackand sprocket.

Rugged Structures. Structuralcomponents and the undercarriageare the backbone of the machine’sdurability. Caterpillar places a lot ofemphasis on the machine’s durabilityduring the designing and manufacturingof its excavators.

• Up to 95% of the structural weldsare welded by robots, which achieveup to three times the penetration of amanual weld and improving overalldurability of the machine.

• The 321D LCR’s main frame utilizeshigh-tensile strength steel and aone-piece swing table, whichimproves strength and reliability.

• The carbody has a X-shaped,box section design to resist bendingand twisting forces.

• Track roller frames are press-formedin a pentagonal shape for additionalstrength.

Engine Hood. The 321D LCR features aone-piece, flat engine hood. The enginehood opens backward. Because theengine hood is located in a placewhere it does not obstruct access tothe inspection points in the enginecompartment, all of the maintenancepoints can be accessed.

Counterweight. The counterweight onthe 321D LCR is split into two piecesfor improved serviceability. The toppiece weighs approximately 2270 kg(5,000 lb), and the bottom weighs3830 kg (8,450 lb). The counterweightis a cast structure and rounded in orderto minimize the amount of overhang.

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Structures321D LCR is designed to handle the most rugged operating conditions, while providinglong life and value.

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Caterpillar offers the most intuitive and easy to operate excavators while providing great allaround visibility and exceptional operator comfort.

Operator Comfort

Operator Station. The layout of theinterior has been redesigned tomaximize operator comfort andreduce operator fatigue.

• Frequently used switches havebeen relocated for easier access.

• Consoles and armrests have beenredesigned for better comfort andadjustability.

• More seat options – choose from thestatic seat, the mechanical suspensionseat, or the air suspension seat withheater. All provide excellent comfort.

Standard Cab Equipment. To enhanceoperator comfort and productivity, thecab includes a lighter, drink holder, coathook, service meter, literature holder,magazine rack and storage compartment.

Joystick Control. Joystick controls havelow lever effort and are designed tomatch the operator’s natural wrist andarm position.

Hydraulic Activation Control Lever.For added safety, this lever must bein the operate position to activate themachine control functions.

Automatic Climate Control.Fully automatic climate control adjuststemperature and flow, and determineswhich air outlet is best in each situationwith a touch of a button.

Cab Exterior. The exterior design usesthick steel tubing along the bottomperimeter of the cab, improving theresistance of fatigue and vibration.

Cab Mounts. The cab shell is attachedto the frame with viscous rubber cabmounts, which dampen vibrationsand sound levels while enhancingoperator comfort.

Windows. All glass is affixed directlyto the cab for excellent visibilityeliminating window frames.

Wipers. Pillar-mounted wipers increasethe operator’s viewing area and offercontinuous and intermittent modes.

Skylight. An enlarged skylight withsunshade provides excellent visibilityand ventilation.

Monitor. The vertical monitor enhancesoperator visibility. The full color LiquidCrystal Display gives you vital operatingand performance information, alerts intext, all in a simple, easy to navigateformat while delivering the informationin 27 languages.

Default Display. Three analog gauges,fuel level, hydraulic oil temperature andcoolant temperature, are displayed inthis area.

Main Menu. Four menu options tochoose from:

Settings – Adjust monitor settings,select Economy Mode, work tool orchoose video mode (when equippedwith a camera)

Maintenance – Displays service intervalsand hours accumulated since last serviced.

Performance – Displays machineperformance attributes such as EngineSpeed, Coolant and Hydraulic OilTemperature.

Service – Allows access to machineparameters for service intervals,diagnostic information and informationrelated to the machines software.

Event Display. Machine informationis displayed in this area with the iconand language.

Multi-information Display. This areais reserved for displaying variousinformation which is convenient for theoperator. The “CAT” logo is displayedwhen no information is available to bedisplayed.

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Front Linkage Options. The ReachBoom allows excellent all-aroundversatility and a large workingenvelope. Equipped with the R2.9B1stick, the 321D LCR performs wellin a mid-range working envelope.

Sticks. The sticks are made of hightensile strength steel using a large boxsection design with interior baffle platesand an additional bottom guard.

Bucket Linkage. The power link improvesdurability, increases machine-liftingcapability in key lifting positions andwith the integrated lift-eye it is easierto use than compared to the previouspower link. The lift eye also gives youthe optimum lift performance. It allowsyou to lower the load point, whichmaximizes the use of the boom cylinders.

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Booms, Sticks and Bucket LinkagesBuilt for Performance and long service life, Caterpillar ® booms and sticks are large, welded,box-section structures with thick, multi-plate fabrications in high stress areas.

Wide Variety of Work Tools. Caterpillaroffers a complete line of work tools tomatch all of your application needs:

• Hammers – matched to Catmachines for optimum performance

• Thumbs, Stiff Link, Full Rotation –transforms your excavator into aversatile material handling machine

• Grapples – choose from a largevariety of grapples that best suityour application

• Vibratory Plate Compactors – providesuperior compaction force in areliable, low maintenance package

Caterpillar Buckets. The most extensivechoice of buckets that can optimizemachine performance and match yourapplication needs.

• General Purpose Buckets (GP) –Large capacity for digging soft tohard materials, such as dirt, loam,and clay like materials. Not intendedfor use in abrasive materials or high-impact applications. The shallowprofile optimizes bucket capacityfor easy to penetrate soils.

• Excavation (X) and ExcavationSpecial (XSP) – for normalexcavation work in soft to hardground with moderate abrasiveness.

• Heavy-Duty Buckets (HD) – for usein materials, such as mixed dirt,clay and rock. Aggressive bucketdesigned for moderate abrasiveapplications. The bucket is designedwith increased wear material toallow for longer life in abrasiveapplications.

• Heavy-Duty Power Buckets –for use in abrasive applicationswhere breakout force and cycletimes are critical – good for materialssuch as mixed dirt, clay and rock.

• Ditch Cleaning Buckets – wide andshallow for ditch cleaning, bankforming and finishing.

Caterpillar Ground Engaging Tools (GET).Choose from a wide variety of tipsthat maximize bucket and machineperformance. Sidecutters and sidebarprotectors are also available.

Pin Grabber Plus Hydraulic Pin Grabber

Couplers. Multiply the versatility andutility of your excavator.

• Hydraulic Pin Grabber Plus – allowsquick and easy tool changes withouthaving to leave the cab. Picks up alarge variety of tools equipped withstandard pins.

• Dedicated Coupler – no loss of tipradius, maximizing the breakoutforces of your 321D LCR.

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Work Tools – AttachmentsThe 321D LCR has an extensive selection of work tools to optimize machine performance.

Auxiliary Hydraulic Options. Allowsyou to configure your machine to meetyour work tools needs, while increasingits versatility.

• Single Function Circuit – suited fortools that require one-way flow withboth pumps, such as hammers,vibratory plate compactors.

• Common Function Circuit –In addition to the Single FunctionCircuit, it features one more selectionof Double Function Circuit, ideal fortools that require two-way flow andone or two pump output, such asthumbs and non-rotating shears orgrapples. Two control options areavailable, either modulated footpedal (right-hand side) or joystickcontrols (on/off, no modulation).Flows can be set through the monitor.

• Tool Control System – accommodatessingle or double function tools, aswell as rotating tools when equippedwith medium pressure.

– Stores pressure and flowinformation for up to 10 tools

– Cat tools selectable that havepreset flows and pressures

– Shortcut button on right handconsole, making tool selectioneasier.

Machine Security. An optional MachineSecurity System is available from thefactory on the 321D LCR. This systemcontrols when the machine can beoperated and utilizes specific keys toprevent unauthorized machine use,a significant theft deterrent.

Product Link. Both the PL121 andPL321 are available as factory installedattachments.

PL121 gives you Asset Watch, whichincludes the following features:

• Engine hours

• Machine location

• Time based fences (when themachines can operate)

• Geo-based fences (boundaries thatthe machine can operator)

PL321 gives you all of the features listedfor PL121, plus the ability to includeHealth and Maintenance Watch.

• Health Watch

– Codes from on-boardEDM’s/Sensors

– Estimated Fuel Consumption

– Fuel Watch

• Maintenance Watch

– Preventative Maintenance Planning

– Preventative Maintenance Checklists

– Overdue PM Notification

– PM History Recording

More Attachments. The 321D LCRoffers the most options available toequip your machine to best match theapplication and work environmentrequirements. From track shoe size toguarding packages to operator comfort.

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VersatilityA wide variety of optional factory-installed attachments are available to enhanceperformance and improve job site management.

Ground Level Service. The design andlayout of the 321D LCR was madewith the service technician in mind.Many service locations are easilyaccessible at ground level allowingcritical maintenance to get donequickly 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 door onthe right side allows for ground levelaccess to the hydraulic pump, engineoil filter, case drain and pilot filters.

Radiator Compartment. The airconditioning condenser swings out toallow access to the engine radiator andoil cooler. the air to air after cooler isfixed in position above the condenser.

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

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

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.

Diagnostics and Monitoring.The 321D LCR is equipped with S•O•SSM

sampling ports and hydraulic test portsfor the hydraulic system, engine oil,and for coolant. A test connection forthe Cat Electronic Technician (Cat ET)service tool is located in the cab.

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

Extended Service Interval. Service andmaintenance intervals have been extendedto reduce machine service time andincrease machine availability.

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

Product Support. You will find nearlyall parts at our dealer parts counter.Cat dealers utilize a worldwide computernetwork to find in-stock parts to minimizemachine down time. Save money withremanufactured components.

Machine Selection. Make detailedcomparisons of the machines you areconsidering before you buy. What arethe job requirements, machineattachments and operating hours?What production is needed? Your Catdealer can provide recommendations.

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 thecustomer’s investment.

Operation. Improving operatingtechniques can boost your profits.Your Cat dealer has videotapes,literature and other ideas to help youincrease productivity, and Caterpillaroffers certified operator training classesto help 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.

15321D LCR Hydraulic Excavator specifications

Hydraulic System

Main Implement System – 205 L/min 54 gal/minMaximum Flow (2x)Max. pressure – Equipment 35 000 kPa 5,076 psiMax. pressure – Heavy Lift 36 000 kPa 5,221 psiMax. pressure – Travel 35 000 kPa 5,076 psiMax. pressure – Swing 25 000 kPa 3,626 psiPilot System – Maximum flow 32.4 L/min 9 gal/minPilot System – Maximum pressure 3900 kPa 566 psiBoom Cylinder – Bore 125 mm 4.9 inBoom Cylinder – Stroke 1403 mm 55.3 inReach Stick Cylinder – Bore 140 mm 5.5 inReach Stick 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 offeredby Caterpillar, when tested with doors and windows closedaccording to ANSI/SAE J1166 OCT 98, meets OSHA andMSHA requirements for operator sound exposure limitsin effect at time of manufacture.

• Hearing protection may be needed when operating withan open operator station and cab (when not properlymaintained or doors/windows open) for extended periodsor in noisy environment.

Standards

Brakes SAE J1026 APR90Cab/FOGS SAE J1356 FEB88

Track

Number of Shoes Each Side – 49Long UndercarriageNumber of Track Rollers Each 8Side – Long UndercarriageNumber of Carrier Rollers Each 2Side – Long Undercarriage

Engine

Engine Model Cat® C6.4 ACERT™ Net Flywheel Power 103 kW 138 hpNet Power – ISO 9249 103 kW 138 hpNet Power – SAE J1349 103 kW 138 hpNet Power – EEC 80/1269 103 kW 138 hpBore 102 mm 4.02 inStroke 130 mm 5.12 inDisplacement 6.4 L 389 in3

• The C6.4 ACERT meets exhaust emissions equivalent toUSA EPA Tier 2 and EU Stage II engine emissions regulations.

• Net flywheel power advertised is the power available at theflywheel when the engine is equipped with fan, air cleaner,muffler and alternator.

• No engine power derated below 2300 m (7,500 ft).

Weights

Operating Weight 23 600 kg 52,040 lb

• Reach boom, R2.9B1 (9 ft 6 in) Stick, 0.8 m3 (1.0 yd3) Bucket,600 mm (24 in) Shoes

Service Refill Capacities

Fuel Tank Capacity 330 L 87 galCooling System 25 L 6.6 galEngine Oil 30 L 8 galSwing Drive 8 L 2.1 galFinal Drive (each) 10 L 2.6 galHydraulic System (including tank) 208 L 55 galHydraulic Tank 120 L 32 galHydraulic Tank (Including 133 L 35 galsuction pipe)

Swing Mechanism

Swing Speed 11.5 rpmSwing Torque 61.8 kN·m 45,612 lb ft

Drive

Maximum Drawbar Pull 206 kN 46,300 lbMaximum Travel Speed 5.7 km/h 3.5 mph

16 321D LCR Hydraulic Excavator specifications

Dimensions – Reach Boom 5.7 m (18'7")All dimensions are approximate.

Boom Reach — 5.7 m (18'7") Stick

Stick R2.9B1 (9'7")1 Shipping Height* 3030 mm (9'11")2 Shipping Length 8830 mm (29'0")3 Tail Swing Radius 1680 mm (5'6")4 Length to Center of Rollers 3650 mm (12'0")5 Track Length 4455 mm (14'7")6 Ground Clearance** 450 mm (1'6")7 Track Gauge 2380 mm (7'10")8 Track Width*** 2980 mm (9'9")9 Body Width 2980 mm (9'9")

10 Cab Height* 2980 mm (9'9")11 Engine Hood Height* 2315 mm (7'7")12 Counterweight Clearance** 1020 mm (3'4")

*** Includes 30 mm (1 in) shoe lug height.*** Without 30 mm (1 in) shoe lug height.*** Track width shown is for 600 mm (24") track shoes for long undercarriage.

9

1 1110

12

2

3

6

87

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17321D LCR Hydraulic Excavator specifications

Boom Reach5.7 m (18'7")

Stick R2.9B1 (9'7")1 Maximum Digging Depth 6630 mm (21'9")2 Maximum Reach on Ground 9710 mm (31'10")3 Maximum Loading Height 7970 mm (26'2")4 Minimum Loading Height 3040 mm (10'0")5 Maximum Vertical Wall Digging Depth 5950 mm (19'6")6 Minimum Front Swing Radius 2340 mm (7'8")7 Maximum Reach 9900 mm (32'6")8 Maximum Cutting Height 10 930 mm (35'10")9 Maximum Digging Depth 2440 mm (8') Level Bottom 6450 mm (21'2")

Bucket Digging Force (ISO) 149 kN (35,000 lb)(SAE) 131 kN (29,450 lb)

Stick Digging Force (ISO) 109 kN (24,504 lb)(SAE) 105 kN (23,605 lb)

Working Range – Reach Boom 5.7 m (18'7")

18 321D LCR Hydraulic Excavator specifications

Major Component Weights

Base machine with counterweight (without front linkage)

Long undercarriage with 600 mm triple grouser shoes 19 830 kg 43,720 lb

Long undercarriage with 800 mm triple grouser shoes 20 490 kg 45,180 lb

Counterweight 6100 kg 13,450 lb

Boom

Two boom cylinders (each) 215 kg 475 lb

Reach boom (includes lines, pins, and stick cylinder)

5.7 m (18'7") 1660 kg 3,660 lb

Stick (includes lines, pins, bucket cylinder and linkage)

R2.9B1 (9'7") 980 kg 2,160 lb

All weights are approximate.

321D LCR Work Tool Matching Guide

Boom Options Reach Boom5.7 m (18'7")

Stick Options R2.9B1(9'7")

Hydraulic Hammer H115s/H120Cs/H130s

Vibratory Plate Compactor CVP110

Trash Grapple 2.7 m3 (3.5 yd3)

Contractor’s Grapple yes

Hydraulic Thumb yes

Dedicated Quick Coupler yes

Pin-Grabber Quick Coupler yes

19321D LCR Hydraulic Excavator specifications

321D LCR Bucket Options

Weight Reach Capacity Width Tip Radius (with tips) Teeth Boom

m3 yd3 mm in mm in kg lb Qty R2.9B1 StickB1 FamilyExcavation 0.8 1.0 1000 39.4 1497 58.9 675 1,488 5 s

0.9 1.2 1120 44.1 1497 58.9 715 1,576 5 s

Excavation Special 0.8 1.0 1990 39.0 1508 59.4 765 1,687 5 s

0.9 1.2 1110 43.7 1508 59.4 830 1,830 5 n

General Purpose 0.9 1.2 1224 48.2 1480 58.3 772 1,702 6 s

1.0 1.3 1224 48.2 1580 62.2 795 1,753 6 s

Heavy Duty 1.0 1.3 1072 42.2 1577 62.1 866 1,909 5 n

s 2100 kg/m3 (3,500 lb/yd3) max material densityn 1800 kg/m3 (3,000 lb/yd3) max material density

Assumptions for maximum material density rating:1. Front Linkage fully extended at ground line2. Bucket Curled3. 100% Bucket Fill Factor

20 321D LCR Hydraulic Excavator specifications

STICK – 2.9 m (9'7")BUCKET – 0.8 m3 (1.05 yd3)

UNDERCARRIAGE – LongSHOES – 600 mm (24") triple grouser

BOOM – 5.7 m (18'7")

* Limited by hydraulic capacity rather than tipping load. The above loads are in compliance with SAE hydraulic excavator lift capacity rating standard J1097.They do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. Weight of all lifting accessories must be deducted from the abovelifting capacities.

Always refer to the appropriate Operation and Maintenance Manual for specific product information.

1.5 m (5.0 ft) 3.0 m (10.0 ft) 4.5 m (15.0 ft) 6.0 m (20.0 ft) 7.5 m (25.0 ft)

mft

9.0 m kg *2400 *2400 6.3430.0 ft lb *5,350 *5,350 20.17

7.5 m kg *4550 *4550 *2150 *2150 7.8625.0 ft lb *9,400 *9,400 *4,700 *4,700 25.47

6.0 m kg *5100 *5100 *5000 4800 *3550 3150 *2050 *2050 8.7720.0 ft lb *11,100 *11,100 *10,950 10,300 *6,550 *6,550 *4,500 *4,500 28.64

4.5 m kg *7550 *7550 *6450 *6450 *5650 4650 *5200 3150 *2050 *2050 9.3115.0 ft lb *13,950 *13,950 *12,250 9,950 *10,950 6,700 *4,500 *4,500 30.47

3.0 m kg *13 350 *13 350 *8450 6950 *6550 4400 5150 3050 *2150 2000 9.5310.0 ft lb *28,450 *28,450 *18,150 14,950 *14,200 9,450 11,050 6,450 *4,650 4,350 31.25

1.5 m kg *5400 *5400 *10 250 6400 7200 4150 5050 2900 *2300 1950 9.475.0 ft lb *12,800 *12,800 *22,050 13,800 15,450 8,900 10,800 6,200 *5,000 4,300 31.08

Ground kg *6950 *6950 *11 200 6100 7000 3950 4900 2800 *2550 2050 9.13Line lb *15,800 *15,800 24,100 13,050 15,000 8,500 10,550 6,000 *5,650 4,500 29.94

–1.5 m kg *6350 *6350 *10 550 *10 550 11 100 5950 6900 3850 4900 2750 *3050 2350 8.46–5.0 ft lb *14,200 *14,200 *23,950 *23,950 23,800 12,800 14,750 8,300 10,450 5,950 *6,700 5,150 27.71

–3.0 m kg *10 450 *10 450 *14 800 11 950 *10 350 6000 6900 3900 *3900 2950 7.37–10.0 ft lb *23,400 *23,400 *32,000 25,600 *22,350 12,950 14,850 8,350 *8,700 6,550 24.05

–4.5 m kg *11 600 *11 600 *8250 6250 *4100 *4100 5.61–15.0 ft lb *24,800 *24,800 *17,550 13,400 *8,950 *8,950 18.14

Load atMaximum Reach

Load PointHeight

Load RadiusOver Front

Load RadiusOver Side

Reach Boom Lift Capacity

21321D LCR Hydraulic Excavator specifications

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

Operator StationCab

Adjustable armrestAntenna and harness (without radio speakers)Ashtray and lighterBeverage/cup holderBi-level air conditioner with defrosterBolt-on Falling object Guarding System (FOGS) capabilityCapability of installing two additional pedalsCoat hookControl lever joystickFront guard bossFront windshield glass spilt 70/30Laminated front windshield and tempered other windows

or Polycarbonate windows for othersLight, interiorLiterature compartmentMounting for two stereo speakers (two locations)Neutral lever (lock out) for all controlsOpenable front windshield with assist deviceOpenable skylightPillar mounted upper windshield wiper and washerPositive filtered ventilationPressurized cab with air conditionerRadio mounting (DIN size)Rear window, emergency exitRemovable lower windshield with in-cab storage bracketSeat belt, retractable (two inch or three inch width)Seat suspension, four-way adjustable low back or high

back with integrated, adjustable console (select one)Sliding upper door windowStart switch panelStorage compartment suitable for lunch boxTravel control pedals with removable hand leversUtility space for magazineWashable floor mat

MonitorEconomy modeFull time clockLanguage display, full graphical displayMachine condition, error code and tool mode settingStart-up level check for hydraulic oil, engine oil and coolantWarning information, filter/fluid change information and

working hour

Upper StructureElectrical

50 Ampere alternatorLight, storage box mounted (one)Signaling/Warning horn

EngineC6.4 with ACERT™ Technology2300 m (7,500 ft) altitude capability without derate2 micron fuel filterAir intake heaterEquivalent EU Stage II/US EPA Tier 2 Emission compliant

Automatic engine speed control with one touch low idleAutomatic swing parking breakBoom drift reducing valveBoom lowering device for back-upCapability of installing additional auxiliary pump and circuitCapability of installing boom lowering control device and

stick lowering control deviceCapability of installing Cat Bio hydraulic oilCapability to electrically connect a beaconCapability of installing stackable valves for main valveCaterpillar one key security systemCircuit breakerCounterweightDoor locks and cap locksHigh performance hydraulic return filterHydraulic main pump – SBS 120Light, Control Valve cover mounted (one)Mirrors, rearview (upper frame-rear)Product Link Ready (PL300: Gateway type)Radial seal air filterRegeneration circuit for boom and stickReverse swing damping valveSecondary engine shutoff switchStick drift reducing valveTwo-speed travelWater separator in fuel lineWaved fin radiator w/enough space for cleaning operation

UndercarriageIdler and center section track guidingTowing eye on baseframe

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

Engine/Power TrainStarting, Cold weather package –25° C (–13° F)Water level indicator (Fuel)

UndercarriageTrack shoes

600 mm (24 in) triple grouser700 mm (28 in) triple grouser800 mm (32 in) triple grouser

Auxiliary HydraulicsCapability of adding medium pressureCombined Circuit

For single/double function (1 or 2 way/1 or 2 pump) hydraulic tools

Hammer CircuitFor single function (1 way/2 pump) hydraulic tools

Joysticks with additional switchesLines for booms and sticksMedium pressure circuit for tools requiring medium pressure

Work ToolsWide offering of buckets, tips and sidecutters

Front LinkageBooms

Reach 5.7 m (18 ft 7 in)Sticks

Reach 2.9 m (9 ft 7 in)Bucket Linkage

B1 FamilyElectrical

Light, Boom – Right sideLights, Cab mounted (2)Machine Security System (MSS)Power supply (12V-5 AMP)Product Link (PL121SR/PL321SR)Travel Alarm

GuardingFalling Object Guarding System (FOGS)Front windshield guard

Full length, wire meshHeavy-duty bottom guardsTrack guiding guards

Sprocket end, idler end guardTwo-piece full length (center guard removed)

Vandalism guardsOperator Environment

Hand control pattern changer (4-way)Seat, high back with air suspension and heaterSeat, high back with mechanical suspensionSeat, low back with mechanical suspensionSeat, static low back

22 321D LCR Hydraulic Excavator specifications

23321D LCR Hydraulic Excavator specifications

Notes

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, ACERT, “Caterpillar Yellow” and thePOWER EDGE trade dress, as well as corporate and product identity used herein,

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

AEHQ5894 (6-07)

APD

321D LCR Hydraulic Excavator