320C MHMaterial HandlingHydraulic Excavator

®

Cat® 3066 ATAAC diesel engineGross power 110 kW/147 hpNet power 103 kW/138 hp

Operating weight without tools 25 030 kgTravel speed 5.5 km/hDrawbar pull 196 kN

2

320C MH Material Handling Hydraulic ExcavatorCaterpillar® Material Handling Arrangements are purposely designed and built for your material handling jobs.

UndercarriageDifferent undercarriage options areavailable to match your performanceand transportation needs.The Long Heavy Duty High Wide(HDHW) undercarriage is stable anddurable. The optional Heavy Duty Square undercarriage provides extra stability.pg. 3

Boom and StickThe Caterpillar material handling frontparts are built for performance and longservice life.

Smart Boom™The 320C MH is equipped with the Caterpillar exclusive SmartBoomfeature. It eases the operations bysmoothening the movements andaccelerating return cycle speed. pg. 4

Upper Frame and CounterweightThe heavy-duty upper frame guaranteesdurability and resistance to handleincreased loads and movementsgenerated by the demanding materialhandling application. A heavier counter-weight balances the swing bearing andprovides enhanced stability. pg. 5

ServiceabilityLonger service intervals and easiermaintenance result in better machineavailability and lower owning andoperating costs. pg. 10

Complete Customer ServiceYour Cat dealer offers a wide range ofservices that can be set up under acustomer support agreement when youpurchase your equipment. The dealerwill help you choose a plan that cancover everything from machine andattachment selection to replacement. pg. 11

Ease of OperationCompact Multipro monitor enhancesviewing while displaying a variety ofeasy to read and understand language-based information. Designed for simpleand easy operation. pg. 7

HydraulicsCat 3066 ATAAC engine andhydraulics give the 320C MH exceptionalpower, efficiency and controllability un-matched in the industry for consistentlyhigh performance in all applications.Medium pressure allows the use ofrotating grapples. pg. 6

Operator Station and Cab riser1200 mm and 1600 mm fixed cab risersare available and provide an overallgood visibility for material handlingapplications. The safe, roomy, quiet,automatically climate controlled cab has excellent sightlines to the work toolto help keep operator fatigue low andproduction up throughout the entireshift. pg. 8-9

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UndercarriagesDurable undercarriages absorb stresses and provide excellent stability.

Standard Undercarriage

Heavy Duty High Wide (HDHW) Undercarriage.The durable 320C MH Heavy Duty High Wide undercarriagewith 600 mm triple grouser track shoes provides a very stableand rugged platform for material handling applications. ■ The undercarriage is reinforced and has a high

ground clearance. ■ Thick carbody plates and increased box section height

induce increased weight and lift capacities.■ Full-length track guiding guards are included.

Optional Undercarriage

Square Undercarriage. The 320C MH Heavy Duty Square undercarriage with 600 mmtriple grouser track shoes gives similar stability and lift capacityover-the-front and over-the-side while handling materials.■ This reinforced undercarriage is high and square,

has a high ground clearance.■ Thick carbody plates and increased box section height

induce increased weight and lift capacities.■ The full-length track guiding guards are included.

Optional Shoes on all Undercarriages. Clipped flat shoes andclipped triple grouser shoes can be made available as option. ■ 600 mm clipped flat shoes■ 600 mm clipped triple grouser shoes

4

Boom and Stick for Material HandlingDurable front parts help you get the best out of your machine.

Material Handling Front Parts.Like all Cat booms and sticks, Caterpillar MaterialHandling front parts are built for performance and long service life:■ Finite elements analysis: analyses the design structural

stresses and enables optimization of durability andperformance.

■ Castings and forgings are used at high stress areas suchas boom nose, boom foot, boom cylinder and stick foot.

■ Internal baffle plates give the structures extra strengthand durability to withstand torsional loads.

■ Large welded box section structures with thick, multi-plate fabrication are used in high-stress areas.

■ Material handling boom and stick are stress relieved, thanks to an in-house heat treatment, to maximizematerial strength and durability while minimizing weightfor improved performance.

Smart Boom.Unloading barges become easier thanks to the SmartBoom:■ It avoids excessive force being put on the barge floor,

allowing the operator to fully concentrate on production. ■ The operations are more productive and efficient due to

improved return speed.

5

Upper frame and CounterweightPurposely designed and built for extreme conditions.

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Reinforced upper frameThe heavy-duty reinforced upper frameof the 320C MH is designed to with-stand the extreme load conditions ofmaterial handling applications. Several modifications to the standardupper frame provide the durability andstrength required in these environments.

1 Box-section cross member

2 Box-section cylinder mounts helphandle increased torsional loads andpayloads.

3 Horizontal mounting plate providesup to 75% more surface area forswing drive and swing bearingmounting bolts.

4 Thicker main rail spreader gussetshandle increased loads andmovements.

5 Steel main frames are 15-20% thickerwith a 55% increase in tensilestrength.

6 Boom tower vertical doubler platesadd reinforcement for increased sideloads and payloads.

Upper frame protection■ Heavy-duty bottom and swivel guards

are standard. Reinforced bumpers areavailable as option.

Swing bearing to upper frame bolts.The swing bearing bolts are 20 mmlonger on the back half of upper framefor increased joint retention. Bolt gradeis increased from 10.9 to 11.9 forincreased bolt torque of swing bearingto upper frame and carbody.

Counterweight. A heavier counter-weight (5800 kg) balances the swingbearing and provides enhanced stability.

Heavy-duty Upper Frame

Standard Upper Frame

Standard

Heavy-duty

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HydraulicsCaterpillar hydraulics deliver power, control and fast cycle times to maximize productivity in any job.

Automatic Engine Control. AutomaticEngine Control (AEC) with convenient one-touch command. Three-stage controlmaximizes fuel efficiency and reducessound levels.■ First stage AEC: Selected when the AEC

indicator on the Multipro panel is “OFF”.If a no-load or light-load conditioncontinues for more than 3 seconds, theAEC reduces engine speed by 100 rpm.

■ Second stage AEC: Selected when theAEC indicator on the Multipro panel is“ON”. If a no-load or light-load conditioncontinues for more than 3 seconds, theAEC reduces engine speed to 1300 rpm.

■ Third stage AEC: Pressing the switch onthe top of the right hand control joystickwhen the levers are in neutral position,reduces the engine speed to 1020 rpm. If the switch is pressed again or if acontrol lever is moved, the engine speedreturns to its normal level.

Easy to Operate Hydraulics. Cat hydraulicsgive the 320C MH exceptional efficiencyand controllability unmatched in the industryfor consistently high performance in allapplications. The 320C MH easy-to-usehydraulic system provides automatic infinitepriority selections between swing and boom,maximizing performance and simplifyingoperation. Boom and swing priority isadjusted automatically depending onjoystick input, eliminating the need to selectthe work-mode. This is a unique feature inthe market.

Hydraulic Cylinder Snubbers. The hydrauliccylinder snubbers at rod end of boomcylinders and both ends of stick cylinderscushion shocks, reduce sound and increasecylinder life, keeping the machine workinglonger.

Hydraulic Pumps Cross Sensing System. The Cross Sensing system improvesproductivity with faster implement speedsand quicker, stronger pivot turns.

Hydraulic Generator. The optional generatorcontrol circuit allows the installation of ahydraulic generator and a magnet.

Auxiliary Hydraulic Circuits. The new auxiliary hydraulic circuits are electronically controlled, allowingessential parameters for frequentlyused hydro-mechanical work tools tobe pre-recorded. This on-boardelectro-hydraulic system eliminatesthe need for manual readjustments tothe auxiliary hydraulics, each time adifferent tool is used.

Boom and Stick Regeneration Circuit.Boom and stick regeneration circuitsincrease efficiency and reduce cycletimes for higher productivity andlower operating costs.

Medium Pressure Circuit. The medium pressure rotate circuit isincluded in the 320C MH for the useof rotating grapples and clamshells.The control of this circuit is on/off.

Controllability. The hydraulic systemoffers precise control to the 320C MH,reducing operator fatigue, improvingoperator effectiveness and efficiency,which ultimately translates intoenhanced performance.

SmartBoomTM. The unique CatSmartBoomTM attachment significantlyenhances operator efficiency inapplications including rock scraping,finishing work, hammer and truckloading applications.

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Ease of OperationDesigned for simple, easy operation, the 320C MH allows the operator to focus on production.

Multipro. The new, compact Multipromonitor enhances viewing whiledisplaying a variety of easy to read andunderstand language-based information.

Pre-start Multipro system. The Pre-startMultipro system alerts the operator incase there is low coolant, engine oil andhydraulic oil levels, prior to starting theengine. When the engine key remains in the “ON” position for more than 2 seconds, warning indicators aredisplayed in language, if actual fluidlevels are lower than required.

Filter and Oil Change warnings.The filter and oil change warnings are displayed when the number of hoursused reaches the maintenance interval.

Integrated Tool Control system.The integrated Tool Control systemallows the operator to quickly select the proper set of flow and pressure para-meters out of five pre-set combinations,eliminating the need to re-set thesehydraulic parameters each time a tool ischanged. Specific flow and pressure canbe programmed easily. The oneway/two way hydraulic functions arealso programmable from the ToolControl system. Each of the five pro-grammed tools can even be given aspecific name chosen by the operator.

Languages. Twenty different languagesare available on the 320C MH. The machine can be ordered with up toseven language combinations at a time.A pre-set combination can be over-written by another language combinationwith Electronic Technician.■ English, French, German, Italian,

Portuguese, Spanish, Japanese■ English, Danish, Finnish, Icelandic,

Norwegian, Swedish■ English, Dutch/Flemish, French,

German, Italian■ English, Czech, German, Greek,

Russian, Turkish■ English, Chinese (simplified),

Indonesian, ThaiThe individual language can be selectedout of the pre-set combination from the Multipro.

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Operator StationThe 320C MH interior layout maximizes operator space, provides exceptional comfort, and reduces operator fatigue.

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Interior Operator Station. The 320C MH operator work station is quiet with ergonomiccontrol placement and convenient adjust-ments, low lever and pedal effort, ergonomicseat design and highly efficient ventilation.

Seat. A new seat with a two-tone color offerstwo types of cushion – soft and firm – foroperator comfort. The reclining knob islocated at the right side of the seat for easierreclining adjustment.

Console. Designed for simplicity andfunctionality. Both consoles have attachedadjustable armrests.

Automatic Climate Control. Fully automaticclimate control adjusts temperature and flowand determines which air outlet is best in each situation.

Greater Control Convenience. Each of thecontrols is positioned within easy reach of the operator. Joysticks with sliding switchescontrol all implements and swing functions.The industry-unique sliding switches providemodulated control for hydro-mechanical toolsand are designed to increase operator comfortand reduce operator fatigue.

Cab Mounts. The cab shell is attached to the frame with viscous mounts, reducingvibration and sound.

Skylight. A unique large polycarbonateskylight provides very good upward visibility,especially useful in above groundapplications.

Viewing area. Excellent viewing area throughwide windows. The front window is one piecefor undistorted view in utility applications(two pieces optional).

Wipers. Designed to maximize visibility in poor weather conditions. The parallel wipersystem covers almost the complete frontwindow without leaving unwiped areas in the immediate line of sight of the operator.

Large storage shelf. Located behind the seatprovides sufficient room for a cooling box.An optional lunch box cover is available toclose off the storage space if preferred.

High Visibility Cab. The laminated safetyglass front window is one-piece with abottom mounted parallel wiper forexcellent visibility. For enhancedupward visibility the increased impactresistant top window extends completelyto the rear and has a wiper and washer.The upper left side door window canslide open. The lower window providesvisibility to the tracks and to the groundnext to the machine. The rear windowoffers a good view behind and to the left,aided by a lower hood profile.

Falling Object Guard. An ISO 3449-1984certified falling object guard on top andfront of the cab is available as option. The front guard swings out for easierwindshield cleaning.

Raised Cab. The 1200 mm or 1600 mmraised cab further improves operator’svisibility in all material handlingapplications. To reduce vibrations andsound the cab shell is attached to theframe with viscous mounts.

Ergonomic Control Placement. The operator work station is quiet with ergonomic control placement and convenient adjustments, low leverand pedal effort, ergonomic seat designand highly efficient ventilation. The result is a cab that puts theoperator firmly and comfortably incontrol to enhance productivity.

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Maximum uptime – Service and MaintenanceExtended Service Intervals and Easy access reduce operating costs.

Extended Service Interval. 320C serviceand maintenance intervals have beenextended to reduce machine service timeand increase machine availability.

Air Filter Compartment. The air filterfeatures a double-element construction forsuperior cleaning efficiency. When the aircleaner plugs, a warning is displayed on the Multipro screen inside the cab.

Ground Level Service. The design andlayout of the 320C was made with theservice technician in mind. Most servicelocations are easily accessible from groundlevel allowing critical maintenance to getdone quickly and efficiently.

Pump Compartment. A service door on the right side of the upper structure allowsground-level access to the pump and pilotfilter.

Diagnostics and Monitoring. The 320C is equipped with S•O•SSM sampling portsand hydraulic test ports for the hydraulicsystem, engine oil and for coolant. A testconnection for the Electronic Technician(ET) is located in the air filter compartment.

Anti-Skid “Punched Star” Plates. Anti-skidpunched-star plate covers top of storagebox and upper structure to prevent slippingduring maintenance. The plates can beremoved for cleaning.

Capsule Filter. The hydraulic return filter, a capsule filter, is situated outside thehydraulic tank. Removing the filter allowsshut-off valves to close the hydraulic circuitpreventing contaminants from entering the system when the hydraulic oil filter ischanged. The capsule filter also keeps the operation clean.

Engine Inspection. Engine can be accessedfrom the upper structure or from under themachine. The engine and pumpcompartment are separated by a steel firewall.

Handrails and Steps. Large handrails andsteps assist operator in climbing on and offmachine.

Side by Side Cooler and Radiator.The left rear service door allows easyaccess to the engine radiator and theoil cooler. In order to ease cleaning,these radiators are located side byside. A reserve tank and drain cock areattached to the radiator for simplifiedmaintenance.

Grease Lubricated Track. Greaselubricated seals protect the track linkand deliver long track link pin andbushing inner wear life.

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.

Bearings. New boom and stick standardbearings only need greasing every 1000 hours.

Caterpillar Product Link systemattachment. It includes a transceivermodule (on-board the machine), office application PC software, and a satellite communications network to track machine hours, location, andwarnings. Product Link simplifiesmaintenance scheduling, fleet manage-ment, unauthorized machine usage ormovement, and product problem eventtracking and diagnosis (PL-201).

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

Services. Customer Service is criticaltoday in every business. That’s why somany people buy Cat equipment. Theyknow they are getting quality reliabilityand performance backed-up with thebest Customer Service. Your Caterpillardealer offers a wide range of servicesthat can be set up under a CustomerSupport Agreement. The dealer willhelp you choose a plan that can coverthe whole machine including worktools, to help you to get the best out of your investment.

Product Support. You will find asolution for your parts requirements at your dealer. Cat dealers utilize aworldwide network to find in-stockparts to minimize downtime. In additionyour dealer can offer alternativesolutions like Reman, Classic Parts and quality used parts to save money on original Caterpillar components.

Service Capability. Whether in thedealer’s fully equipped shop or in thefield, you will get highly trained servicetechnicians using the latest technologyand tools.

Maintenance. More and moreequipment buyers are planning foreffective maintenance before buyingequipment. Choose from your dealer’swide range of maintenance services atthe time you purchase your machine.Repair option programs guarantee the cost of repairs up front. Diagnosticprograms such as S•O•SSM Fluidanalysis and Technical Analysis helpyou avoid unscheduled repairs.

Selection. Make detailed comparisonsof the machines you are consideringbefore you buy. How long docomponents last? What is the cost of preventive maintenance? Your Catdealer can give you precise answers to these questions to make sure youoperate your machines at the lowest cost.

Purchase. Consider the financingoptions available as well as day-to-dayoperating costs. This is also the time to look at dealer services that can beincluded in the cost of the machine to yield lower equipment and owningand operating costs over the long run.

Operation. Improving operatingtechniques can boost your profits. Your Cat dealer has training materialand ideas to help you increaseproductivity.

Replacement. Repair, rebuild orreplace? Your Cat dealer can help you evaluate the cost involved so you can make the right choice.

320C MH Material Handling specifications12

Ground PressureActual ground pressure will depend onfinal machine configuration.

HDHW undercarriage kg/cm2

600 mm shoes 0.53

700 mm shoes 0.46

800 mm shoes 0.41

900 mm shoes 0.35

Square undercarriage600 mm shoes 0.54

700 mm shoes 0.46

800 mm shoes 0.41

900 mm shoes 0.37

Track Width

mmHDHW and Heavy Duty SquareundercarriagesStandard shoes

triple grouser 600

Optional shoes

triple grouser 600 HD

triple grouser 700, 700 HD

triple grouser 800, 900

clipped flat 600

clipped triple grouser 600

Engine

Cat 3066 ATAAC diesel engine

Ratings 1800 rpm

Net Power

ISO 9249 103 kW/138 hp

EEC 80/1269 103 kW/138 hp

Bore 102 mm

Stroke 127 mm

Displacement 6.4 liters

■ The 3066 ATAAC engine meets EU directive 97/68/EC Stage IIemission requirements.

■ Net power advertised is the poweravailable at the flywheel when theengine is equipped with fan, aircleaner, muffler, and alternator.

■ No engine derating required below2300 m altitude.

Hydraulic System

Main Implement System

Maximum Flow (2x) 205 l/min

Maximum pressure

Implements 34 300 kPa

Travel 34 300 kPa

Swing 25 000 kPa

Pilot System

Maximum flow 41 l/min

Maximum pressure 4120 kPa

Sound

The dynamic exterior sound power levelmeets EU Directive 2000/14/EC.

Cab

Cab/FOGS meets ISO 10262.

Drive

Maximum Travel Speed 5.5 km/h

Maximum Drawbar Pull 196 kN

Swing Mechanism

Swing Speed 11.5 rpm

Swing Torque 61.8 kNm

Service Refill Capacities

Liter

Fuel Tank Capacity 320

Cooling System 30

Engine Oil 30

Swing Drive 8

Final Drive (each) 10

Hydraulic System (including tank) 200

Hydraulic Tank 120

HDHW 320C MH with Heavy Duty High Wide undercarriageSquare 320C MH with Heavy Duty Square undercarriage

Dimensions and WeightsMaterial Handling front parts (boom and stick), no work tool, heavy duty upper frame and 5800 kg counterweight. All dimensions and weights are approximate.

HDHW SquareA Overall length

with boom and stick installed

B Boom height

with boom and stick installed

C Overall width with triple grouser shoes

600 mm

D Track length

E Length to center of rollers

F Tail swing radius

G Ground clearance

H Body Height

J Cab height without cab riser

with FOG

without FOG

J Cab height with 1200 mm cab riser

with FOG*

without FOG*

Height without cab**

J Cab height with 1600 mm cab riser

with FOG*

without FOG*

Height without cab**

K Body width

L Track gauge

M Counterweight ground clearance

WeightsOperating machine

Undercarriage

* Cab must be removed for transport** Height at joysticks: with cab riser, without cab,

with seat tilted backwards at maximum

mm 9760 9480

mm 3470 3450

mm 3190 3740

mm 4450 4450

mm 3650 3650

mm 2830 2830

mm 630 610

mm 2320 2350

mm 3220 3250

mm 3120 3150

mm 4420 4450

mm 4320 4350

mm 3460 3490

mm 4820 4850

mm 4720 4750

mm 3860 3890

mm 2500 2500

mm 2590 3140

mm 1170 1200

kg 24 700 25 030

kg 8140 8560

HDHW 320C MH with Heavy Duty High Wide undercarriageSquare 320C MH with Heavy Duty Square undercarriage

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Working Range – 320C MH with HDHW undercarriageMaterial handling front parts (no work tool) with Heavy Duty High Wide (HDHW) undercarriage and heavy duty upper frame.

m

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

1

2

3

4

5

6

7

8

2101234567891011121314

C

B

A

Boom

Stick

Shoes (triple grouser)

Cab riser

Counterweight

A Maximum horizontal reach at ground level

B Maximum vertical pin depth

C Maximum vertical pin height

The range is applicable in 360°, and dependent on maximum weight of work tool.

6650 mm

5450 mm

600 mm

1200 mm

5800 kg

11 250 mm

6220 mm

11 510 mm

320C MH Material Handling specifications14

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Lift Capacities – 320C MH with HDHW undercarriageMaterial handling front parts (no work tool) with Heavy Duty High Wide (HDHW) undercarriage and heavy duty upper frame. All weights are in kg.

Shoes600 mm

Stick5450 mm

Counterweight5800 kg

Boom6650 mm

*4340 *4340 7.18*4060 *4060 *3880 *3880 8.69*4040 *4040 *3760 *3760 *3640 3270 9.74*4180 *4180 *3810 3730 *3500 2830 10.47

*5130 *5130 *4450 *4450 *3940 3610 *3530 2750 *3420 2550 10.94*10 760 *10 760 *7400 *7400 *5750 *5750 *4770 4620 *4100 3450 *3580 2670 *3360 2380 11.19*13 620 *13 620 *8580 *8580 *6340 6020 *5070 4330 *4240 3290 *3610 2570 *3320 2300 11.24

*8000 *8000 *9180 8430 *6680 5600 *5240 4080 *4290 3140 *3550 2490 *3270 2290 11.08*5160 *5160 *7700 *7700 *9040 8030 *6660 5320 *5200 3910 *4180 3030 *3330 2440 *3210 2370 10.71*6040 *6040 *8120 *8120 *8230 7890 *6220 5200 *4850 3820 *3820 2980 *3100 2560 10.11

*8650 *8650 *6810 *6810 *5280 5200 *4100 3830 *3030 3010 *2870 *2870 9.21*3720 *3720 *2720 *2720

10.5 m9.0 m7.5 m6.0 m4.5 m3.0 m1.5 m

–1.5 m–3.0 m–4.5 m–6.0 m

Ground

1.5 m 3.0 m 4.5 m 6.0 m 7.5m 9.0 m 10.5 m

m

Load Point Height Load Radius Over Front Load Radius Over Side Load at Maximum Reach

* Limited by hydraulic rather than tipping load.The above loads are in compliance with hydraulic excavator lift capacity ratings standard ISO 10567, they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. Weight of all lifting accessories must be deducted from the above lifting capacities.

320C MH Material Handling specifications16

Working Range – 320C MH with Heavy Duty Square undercarriage Material handling front parts (no work tool) with Heavy Duty Square undercarriage and heavy duty upper frame.

m

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

1

2

3

4

5

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8

2101234567891011121314

C

B

A

Boom

Stick

Shoes (triple grouser)

Cab riser

Counterweight

A Maximum horizontal reach at ground level

B Maximum vertical pin depth

C Maximum vertical pin height

The range is applicable in 360°, and dependent on maximum weight of work tool.

6650 mm

5450 mm

600 mm

1200 mm

5800 kg

11 250 mm

6190 mm

11 540 mm

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Lift Capacities – 320C MH with Heavy Duty Square undercarriageMaterial handling front parts (no work tool) with Heavy Duty Square undercarriage and heavy duty upper frame. All weights are in kg.

Load Point Height Load Radius Over Front Load Radius Over Side Load at Maximum Reach

* Limited by hydraulic rather than tipping load.The above loads are in compliance with hydraulic excavator lift capacity ratings standard ISO 10567, they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. Weight of all lifting accessories must be deducted from the above lifting capacities.

1 *4330 *4330 7.22*4060 *4060 *3870 *3870 8.71*4040 *4040 *3760 *3760 *3640 *3640 9.76

*4660 *4660 *4190 *4190 *3810 *3810 *3500 *3500 *3500 *3500 10.48*5150 *5150 *4450 *4450 *3940 *3940 *3530 3460 *3420 3210 10.95

*10 830 *10 830 *7420 *7420 *5770 *5770 *4780 *4780 *4100 *4100 *3580 3370 *3360 3030 11.20*13 660 *13 660 *8600 *8600 *6350 *6350 *5070 *5070 *4240 4150 *3610 3270 *3320 2940 11.24

*7980 *7980 *9180 *9180 *6690 *6690 *5240 5210 *4290 4000 *3550 3190 *3270 2950 11.08*5180 *5180 *7710 *7710 *9030 *9030 *6660 *6660 *5190 5030 *4170 3890 *3330 3140 *3210 3050 10.70*6050 *6050 *8130 *8130 *8210 *8210 *6200 *6200 *4840 *4840 *3800 *3800 *3090 *3090 10.09

*8660 *8660 *6780 *6780 *5260 *5260 *4080 *4080 *3010 *3010 *2860 *2860 9.19*3680 *3680 *2680 *2680

10.5 m9.0 m7.5 m6.0 m4.5 m3.0 m1.5 m

–1.5 m–3.0 m–4.5 m–6.0 m

Ground

3.0 m 4.5 m 6.0 m 7.5m 9.0 m 10.5 m 12.0 m

m

Shoes600 mm

Stick5450 mm

Counterweight5800 kg

Boom6650 mm

Material Density 3000 kg/m3

18 320C MH Material Handling specifications

Work Tools Matching Guide*Work tools listed below have been calulated with machine in stability position, over-the-side, at maximum horizontal reach and ground level. This guarantees that the tool used at maximum horizontal reach can be handled in all the working envelopes. As a result, when choosing between various work tool models that can be installed onto the same machine configuration, consider work tool application, productivity requirements, and durability. Refer to work tool specifications for application recommendations and productivity information. Check with your Cat dealer for more details on specifications and other work tools sizes.

GOS-25

GSM-35

GSM-25

GSM-35

GSH-15

GSH-15

0.46

0.52

0.58

0.75

0.90

0.98

1.14

0.62

0.70

0.78

1.05

1.26

1.46

1.67

0.40

0.50

0.60

0.80

0.50

0.60

0.80

1.00

0.40

0.50

0.60

0.80

0.40

0.50

0.60

0.80

Material Density 1800 kg/m3

Material Density 1200 kg/m3

Not compatible

HDHW SquareCapacity m3

Clamshell Buckets

Orange Peel Grapples (5 tines)

Orange Peel Grapples (4 tines)

HDHW 320C MH with Heavy Duty High Wide undercarriageSquare 320C MH with Heavy Duty Square undercarriage

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Stick Nose Specifications

A Stick nose width 356 mm

B Stick nose inner diameter of bearing 90.27 mm

AB

* The stick end pin and jumping lines are not included in the base machine and have to be chosen in accordance with the needed tool.

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Operator EnvironmentFalling object guardHydraulic modulation pedalOpenable front windshield, 50/50 splitSeat heaterStraight travel pedalVisor rain protection

UndercarriageHeavy Duty Square

ShoesHDHW and Heavy Duty Squareundercarriages

Triple grouser: 600 mm HD, 700 mm,700 mm HD, 800 mm, 900 mm

Clipped flat: 600 mmClipped triple grouser: 600 mm

EngineStarting aid

Cold weatherEther

ElectricalElectric Refueling pump

HydraulicsControl generator circuit,

without generatorFine Filtration FilterSynthetic Ester based

Bio hydraulic oil

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

Standard Equipment Standard equipment may vary. Consult your Caterpillar dealer for specifics.

Operator EnvironmentAsh tray with cigar lighterBi-level air conditioner with automatic

climate controlBolt-on FOGS capabilityCoat hookDrink holderEmergency exitFixed one piece front windscreenFloormat washableFully adjustable suspension seat

with headrestHeater and DefrosterHornJoysticks, adjustable and pre-wired

with sliding switches for auxiliary functions

Light, interiorLiterature holderParallel mounted bottom wiper

and washerPolycarbonate SkylightPositive filtered ventilationPower supply 12V - 7APre-wired radio mounting (2)Retractable seatbeltReturn filter clogging alarmStationary skylightStorage compartment suitable for

a lunch box coolerSun visorTravel control pedals with removable

hand levers

Language display MultiproGauges for fuel level, engine coolant

temperature and hydraulic oiltemperature

Indicator for engine dial settingWarning messagesFilter/fluid change informationPre-start Level Check for hydraulic oil,

engine oil and coolantWorking hour informationClock with 10 day back-up battery

EngineAir pre-cleaner with wider pitch

radiator coreAutomatic engine speed controlCat 3066 ATAAC diesel engine

with 24V electric starting and air intake heater

Cooling system, high ambientMufflerWater separator

UndercarriageFull-length track guiding guardGrease lubricated track-type

undercarriageHDHW UndercarriageHeavy Duty bottom guardingHeavy Duty swivel guardHydraulic track adjustersIdler and center section track

guiding guardsShoes:

600 mm triple grouserTwo-speed auto shift travel

MH Front PartsMaximum reach 11 250 mm

HydraulicsAutomatic work modesAuxiliary hydraulic valveBoom and stick regeneration circuitBoom lowering control device

with SmartBoom and overload warning device

Fine swing ControlHydraulic lines for boom and stickHydraulic neutralizer lever for all controlsOil coolerStick lowering control deviceTwo-ways Medium Pressure

ElectricalAlternator, 50 ampHeavy Duty maintenance free batteries (2)Main shut-off switchWorking lights:

Boom, both sidesCab mounted, twoFrame mounted, one

Other EquipmentAutomatic swing parking brakeAuxiliary outlet port on tankCounterweightDoor locks and caps locks with

Caterpillar one-key security systemMirrors, frame and cab

320C MH Material Handling Hydraulic Excavator

HEHH2866 (04/2003) hr

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© 2003 Caterpillar

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

See your Caterpillar dealer for available options.

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