PC1250/1250SP-8 E - Komatsu Ltd.

1 And specifications are subject to change without a trademark of Komatsu Ltd. in Japan 200910 (05)HORSEPOWERG ross:514 kW 688 HP @ 1800 rpmNet:502 kW 672 HP @ 1800 rpmOPERATING WEIGHTB ackhoe:106500 110700 kg 234,790 244,050 lbLoading shovel:110900 kg 244,490 lbPhoto may include optional SHOVELPC1250 STANDARD EQUIPMENTOPTIONAL EQUIPMENTENGINE AND RELATED ITEMS: Air cleaner, double element, dry Variable speed cooling fan, with fan guard Engine, Komatsu SAA6D170E-5 ELECTRICAL SYSTEM: Alternator, 60 amp, 24 V Batteries, 220 Ah, 2 x 12 V Starting motors, 11kW x 2 Working lights-2 boom, 2 cab top front, 1 cab bottom, 1 cabRH(Step light with timer) Auto deceleratorUNDERCARRIAGE: 700 mm28'' double grouser 8 track/3 carrier rollers (each side) Hydraulic track adjusters (each side) Track guiding guard (each side)GUARDS AND COVERS: Dust-proof net for radiator and oil cooler Pump/engine room partition wall Travel motor guards Revolving frame under cover (Heavy-duty)OPERATOR ENVIRONMENT.

2 Damper mount, all-weather, sound-suppressed cab with tintedsafety glass windows, lockable door, intermittent window wiperand washer, floormat, cigarette lighter and ashtray Instrument panel with electronic display/monitor system,electronically-controlled throttle dial, electric service meter, gauges(coolant temperature, hydraulic temperature and fuel level),caution lights (electric charge, engine oil pressure, and air cleanerclogging), indicator lights (engine preheating and swing lock light)level check lights (coolant, engine oil, and hydraulic oil level), self-diagnostic system with trouble data memory Rearview mirrors, left and right Seat, fully adjustable with suspension Cab with fixed front windowHYDRAULIC CONTROLS: Fully hydraulic, with Electronic Open-Center Load-Sensing(EOLSS) and engine speed sensing (pump and engine mutualcontrol system) One gear pump for control circuit Two axial piston motors for swing with single-stage relief valve One axial piston motor per track for travel with counter balancevalve Three variable capacity piston pumps (2 Main, 1 Swing) Three control valves, 5+4+4 spools (boom, arm, bucket, swing,and travel) Control levers, wrist control levers for arm, boom, bucket, andswing with PPC system Control levers and pedals for steering and travel with PPC system Oil cooler In-line high pressure filters Shockless boom control Two-mode setting for boomDRIVE AND BRAKE SYSTEM: Brakes, hydraulic lock travel brakes, oil disc parking Hydrostatic two travel speed system with planetary doublereduction final driveOTHER STANDARD EQUIPMENT.

3 Automatic swing holding brake Corrosion resister Counterweight, 18000 kg39,680 lb Horn, air Marks and plates, English Paint, Komatsu standard Vandalism protection locks Wide catwalk Large handrails One-touch engine oil drainage PM tune-up service connector Travel alarm Rear reflector Anti-slip plates Alternator, 90 Amp, 24 V Arms (Backhoe): 3400mm11'2'' arm assembly 3400mm11'2'' HD arm assembly 3400mm11'2'' SP arm assembly 4500mm14'9'' arm assembly 4500mm14'9'' HD arm assembly 5700mm18'8'' arm assembly Arms (Loading shovel): 3800mm12'6'' arm assembly Auto air conditioner Automatic grease system, Lincoln 18 ltr Booms (Backhoe): 7800mm25'7'' SP boom assembly 9100mm29'10'' boom assembly Booms (Loading shovel): 5300mm17'5'' boom assembly Cab with pull-up type front window Communication system for VHMS (Orbcomm) General tool kit Grease gun, air pump Heater Interconnected horn and flashing light Radio AM/FM Seat belt 78 mm3'' Shoes: 1000 '' double grouser Spare parts for first service Track roller guard (full length) Track frame undercover (center) Vehicle Health Monitoring System (VHMS)HYDRAULIC EXCAVATOR2 WALK-AROUNDHYDRAULIC EXCAVATORHYDRAULIC EXCAVATORPC1250-8PC1250-80 HORSEPOWERG ross:514 kW688 HP @ 1800 rpmNet:502 kW672 HP @ 1800 rpmOPERATING WEIGHTB ackhoe106500 110700 kg 234,790 240,050 lbLoading shovel110900 kg 244,490 lbEcology and Economy Features Komatsu SAA6D170E-5 Engine Meets Tier 3 Emissions Certified.

4 World s first cooled EGR system with bypass-assist type electronically controlled venturi Offers high power and low fuel consumption, while conforming to Tier 3 emission certified. Reduces NOx emission approximately 40%. Equipped with an electronically controlled variable speed fan. Economy Mode Four-level SettingEnables operator to select the appropriate Economy mode level tomatch production requirement with lowest fuel consumption. Reduction of Ambient Noise Electronically controlled variable speed fan drive Large hybrid fan Glasswool-furnished low-noise muffler and noise reducing cover around the mufflerSee page Environment Large Comfortable Cab Low noise and vibration with cab damper mounting Large-capacity air conditioner (optional) Pressurized cab prevents external dust from entering OPG top guard level 2 (by ISO 10262 standard)capable with optional bolt-on top pages 8, Monitor Features Machine condition can be checked withEquipment Management MonitoringSystem (EMMS).

5 See page 11. Two working modes combine with heavylift mode for maximum productivity. See page may includeoptional Maintenance Easy Cleaning of Cooling UnitFan reverse-rotation functionfacilitates clogged radiatorcleaning. Centralized Arrangement ofEngine Checkpoints Anti-slip Platesfor improved foottraction Large Handrail, Step andCatwalkprovide easy access tothe engine and page 10. Highly Reliable Electronic DevicesExclusively designed electronic devices havepassed severe testing. Controllers Sensors Connectors Heat resistant wiring Circuit breaker Boom Foot Hoses are arranged under the boomfoot, improving hose life and safety. See page Features Heavy Lift ModeThe heavy lift mode increases lifting force by 10%. Large Digging ForceHigh operation efficiency with large digging force forsevere applications. Two-mode Setting for BoomSwitch selection allows either powerful digging orsmooth boom operation. Twin Swing Motor System provides excellent swingperformance, even on slopes.

6 Large Drawbar Pull and Steering Forceprovide excellent mobility. Swing Priority ModeThe swing priority mode improves efficiencyfor loading dump trucks at 90 or 180 . Shockless BoomSwitch selection reduces chassisvibration after sudden page Reliability andDurability Strengthened Quarry Bucket ProvidedOutstanding Wear-resistance (optional) KMAX Bucket Teeth offer superiorpenetration and long-term sharpness. Fuel Pre-filter with water separator equipped asstandard. O-ring Face Seals, which have excellent sealingperformance, are used for the hydraulic hoses. High-pressure In-line FiltrationThe cool-running hydraulic system is protectedwith the most extensive filtration system available,including a high pressure in-line filter for eachmain & ECOLOGYFEATURESHYDRAULIC EXCAVATORPC1250-80 Working ModeApplicationAdvantagePower Maximum production/powerPMode Fast cycle timeEEconomy Good cycle timeMode Good fuel economyWorking Mode SelectionPower and Economy ModeThe pc1250 -8 excavator is equipped with two workingmodes.

7 Each mode is designed to match engine speed,pump flow, and system pressure to the current application,giving the operator flexibility to match equipment performanceto the job at Clean Engine MountedThe pc1250 -8, which is equipped with the KomatsuSAA6D170E-5 engine, meets the Tier 3 emission certified inNorth America (EPA) and EU stage SAA6D170E-5 engine adopts the world s first cooledEGR system with electronically controlled bypass-assist typeventuri. NOx emission is reduced 40%, while maintaininghigh power and low fuel Controlled Variable Speed FanContributes to Low Fuel Consumption and LowNoiseThe electronic control system setsthe rotational speed of the coolingfan according to the coolant,hydraulic oil, and ambienttemperature; effectively uses theengine output to prevent wasteful fuelconsumption; and reduces noiseduring low-speed fan rotation. Lower and Economical FuelConsumption UsingEconomy ModeEnables operator to set the Ecomode to up to four levelsaccording to working conditionsso that production requirement isachieved at lowest possible fuel of Ambient NoiseReduced noise by adoption of an electronically controlledvariable speed fan drive, large hybrid fan, low-noise mufflerand cover with glasswool.

8 Komatsu will launch pc1250 withlower-noise specifications to the EU market.(E0,E1,E2,E3)Pump for fanElectronic control unit for engineElectronically controlledvariable speed fanHydraulic system controllerLCD color monitorEngineHeavy duty HPCR (High Pressure Common Rail) systemElectronically controlled cooled EGR systemHydraulic control valveMain pumpKomatsu TechnologyKomatsu develops and produces all majorcomponents, such as engines, electronicsand hydraulic components, in this Komatsu Technology, and addingcustomer feedback, Komatsu is achievinggreat advancements in achieve both high levels of productivity andeconomical performance, Komatsu hasdeveloped the main components with a totalcontrol result is a new generation of highperformance and environment is an image photo: maydiffer from the actual Lift ModeGives the operator 10% more lifting force on the boom whenneeded for handling rock or heavy lifting Priority SettingThe swing priority setting allows the operator to use the sameeasy motion for 180 loading as 90 loading operations.

9 Byaltering the oil flow, this setting allows you toselect either boom or swingas the priority forincreased ModeEconomy ModeHeavy Lift ModeSwing Priority ModeLarge Digging ForceThanks to the high engine output and an excellent hydraulicsystem, this machine demonstrates powerful digging arm crowd force (ISO):412 kN tonMaximum bucket digging force (ISO):479 kN tonLarge Drawbar Pull and Steering ForceSince the machine has a large drawbar pull and a highsteering force, it demonstrates excellent mobility even whenit is being used on inclined Setting for BoomSmooth modeprovides easy operation for gathering blastedrock and scraping operations. When maximum digging force isneeded, switch to power modefor more effective Boom ControlThe pc1250 -8 boom circuit features a shockless valve(double-check slow return valve) to automatically reducesthe amount of vibration present when operating the fatigue is reduced (which can improve safety andproductivity), and spillage caused by vibration is raiseExtend andretractHYDRAULIC EXCAVATORPC1250-8 Powermode76 RELIABILITYFEATURESHYDRAULIC EXCAVATORPC1250-80 Strengthened Quarry Bucket Provided Outstanding Wear-resistance (optional)The bucket for specific use in quarry is impact and wear resistant, providing high performance and long life.

10 Koma-hard materials* provide excellent wear resistance. Combined with adoption of long-life XS teeth, durability of bucket isdrastically enhanced. * Koma-hard materials (KVX materials): Komatsu developed, wear-resistant, reinforced hardness: 500 or more (180kgf/mm2class).Features high wear-resistance and little quality changefrom the heat generated during rock loading, maintaininglong term Reliability and DurabilityBoom Foot HosesThe boom foot hoses are arrangedunder the boom foot to reduce hosebend during operation, extending hoselife and improving operator Guard RingsMetal guard rings protect all thehydraulic cylinders and improve guards shield the travel motorsand piping against damage from rocks. High-pressure In-line FiltrationThe pc1250 -8 has the most extensivefiltration system available, providingin-line filters as standard in-line filter in the outlet port ofeach main hydraulic pump reducesfailures caused by roller guard (full length)(optional)O-ring Face SealThe hydraulic hose seal method hasbeen changed from a conventional taper seal to an O-ring seal.