Bucket Capacity: 1.2 m3 SAE heapedEngine Power: 125 kW (170 PS/168 HP) SAE NET at 2,100 rpm

Operating Weight: 24,200 kg with 600 mm shoe

HYDRAULIC EXCAVATOR

SK250LC

High-Output yet Environment FriendlyEngineThe high-output engine with intercooler features an ESS(Engine Speed Sensing) system and total horsepowercontrol system that ensure the most efficient use ofhorsepower at all times. Engine complies with Tier II(European) Regulations.

Rated Output: 125 kW (170 PS)

Stronger Digging Forcesfor the Toughest JobsWith max. discharge pressure set ata high 34.3 MPa, the SK250LC haspower to spare for boom hoisting andother operations. Bucket diggingforce has been increased by 6% tohandle the toughest jobs. And wheneven that’s not enough, the one-pushPower Boost feature provides an

added 10%, without any time limit or cut in hydraulic flow.

Bucket Digging Force: 165 kN With Power-Boost activated: 182 kNArm Crowding Force: 113 kNWith Power-Boost activated: 125 kN

Powerful Drawbar PullHigh-performance travel system ensures powerful drawbarpulling force.

Drawbar pull: 228 kN

Extra Power and Stronger Structure Mean Superior Performance.

P E R F O R M A N C E

Reinforced Body Can Handle a Wide Variety of Jobs

With steel plate used in the upper body and boomsupport section, the SK250LC is tougher and moredurable than ever, providing strong and stable support for long and heavy attachments. High-tensile steel plate is also used in the crawler frame and carbody.

New X-Chassis with Innovative Crawler FrameThe joint between the chassis and crawler frame hasbeen further reinforced to make the chassis even moreresistant to torsion. The new design of the crawler framemakes mud removal easy.

New design of crawlerframe

Revolutionary KOBELCO Control System

Electronic Positive Control Ensures ExcellentResponsivenessWith the improved ITCS system and the introduction of electronic positive control, control lever action is conveyed directly to the hydraulic pump. The operator gets exactly the response he wants: smooth, precise control;excellent stability; and steady speed during simultaneous operations.

C O N T R O L

Assist ModeThe computerized ITCS (Intelligent Total Control System) system usesfuzzy logic to automatically analyze operational patterns and optimizemachine output to achieve maximum efficiency.

Manual Mode (default setting)This mode features crisp control and maximum engine output to boostoperating capacity for hard digging and loading.

Breaker ModeThe operator can control pump flow from his seat to matchthe breaker being used. During breaker operation, thesystem automatically adjusts the flow to preset value; atother operations, normal hydraulic flow is maintained.

Assist Mode Display Sample

Spreading TampingDigging Leveling

Three Working Modes

Reduces air pollution by cutting exhaust emissionsAuto Idling Stop eliminates wasteful and unnecessaryengine idling. It cuts emissions of nitrogen oxide and

carbon dioxide, minimizing the machine’seffect on atmospheric pollution andglobal warming.

Reduces fuel consumption by approx. 20% (KOBELCO comparisons)A big boost to energy saving! Fuel consumption is cutby approx. 20% compared with conventional machines.Significant savings can be made on fuel costs.Note: May vary, according to operating conditions.

AIS SystemThe AIS system is activated whenever the safety locklever is pulled up.

Auto Idling Stop (AIS) control switch

Electronic Active Control SystemThis advanced system provides sensitiveand accurate response in proportion to thelever stroke while ensuring shocklessstarts and stops.

Smooth Automatic DecelerationWhen the control levers are in neutral, theengine automatically reduces speed toeffectively save fuel.Engine speed increases smoothly in

response to lever stroke.

En

gin

e R

PM

Lever off (neutral)

Lever stroke

Lever on

(Option)

6

2

1

4

5

3

Wide, Reinforced CabThe cab is 1,005mm wide, easilymeeting European Standards.Comfort and ease of operation are thekey words that describe the workingenvironment, with reinforced pillarsthat provide added cab strength.Ample head clearance makes cabentry and exit easy.

Panoramic Visibility!The forward view from the operator’sseat easily clears ISO Standards, withupward visibility enhanced by theskylight.

New! Front wiper bladecovers 20% more area• “Rise-up” long wiper blade stores

up out of view.

• Polycarbonate skylight lifts up easilywith help of a gas spring.

Automatic Climate ControlWith a cooling output of 5.35 kW(4,600 kcal/h) and a heating output of5.93 kW (5,100 kcal/h), the powerfulclimate control system keeps the cabcomfortable in all kinds of weather.Just set the desired temperature.

Low Noise and VibrationViscous cab mounts effectively reducevibration. Further protection againstvibration and noise is provided by thehigh rigidity of the cab structure itself.

Fully Adjustable Operator’sSeatThe seat can be slid forward andbackward either independently ortogether with the control console. Itcan also be adjusted vertically usingthe height-riser function to obtain justthe right positioning for comfortableand efficient operation.

Relaxing Amenities• New cup holder• Hot’n’Cool box and large-capacity luggage box

• Easy-open front windowwith assist mechanism

• Optional rain visor

Rubber Cushion

Floor Plate

Silicon Oil

DamperPlate

Convenient Console Layout1 Electric rotary engine throttle 2 Working mode selector switch 3 Multi-display monitor 4 Power Boost switch 5 Safety lever lock 6 Automatic climate control system

C O M F O R T C A B

World-Class Cab Offers Plenty ofComfortable Space

Cross-section of Viscous Cab Mount

20% UP!

Side mirror Cab side mirror

Additional mirrors fitted to ensure on-site safety

Excellent Reliability and Maintenance Features Ensure an Extended High-Performance

H I G H R E L I A B I L I T Y

Excellent Reliability and Maintenance Features Ensure an Extended High-Performance

Highly Durable AttachmentBushing• The self-greasing bushing in the

boom foot and cylinder fixturesprolong service interval.

• The boom foot fixation has beenreinforced by the usage of specialextra-hard bushings.

• New bucket-clatter adjustmentmechanism improves durability.

Filter life extended to 1,000 hours

Large capacity SuperFine Filter is made ofhigh performance filtermedium. It requireschanging only once in1,000 hours double thelife of conventionalfilters. It saves onlifelong operating costs.

New Removable AluminiumRadiatorThe SK250LC has been equippedwith a radiator made of aluminium anddisperses heat very efficiently. Thenew design also allows you to removethe entire radiator for cleaning withoutdetaching the hydraulic piping. Tomake routine cleaning easier, there isample space between the radiatorand the oil cooler.

New Water SeparatorLarge capacity and transparent waterseparator can separate more water

from the fuel forlonger cleaningintervals and easierroutine maintenance.

Multi-Display Monitor• The Multi-display

Monitor constantlyindicates the machine’srunning condition. Theanalog fuel and watertemperature gaugescan be read anytime at a glance.

• All frequently used switches are located on the display monitor panelfor easy access.

Maintenance Information DisplaySelf-diagnostic function: 28 itemsService diagnostic function: 23 itemsMalfunction log: 60 items

Environment Friendlyand Safety FeaturesFor Environment• New engine complies with Tier II

(European) Regulations for ExhaustEmissions.

• Non Amin LLC, Bio oil (option)

For SafetySeatbelt, Safety lock lever, Handyhammer, Laminated safety glass, Safetyvalves for boom cylinders and armcylinder(option), Travel alarm(option)

New bucket-clatteradjustment mechanism

self-greasing bushingAluminium radiatorAluminium oil cooler

Engine cablethrottle usedwhen CPU isdown

Emergencyengine stop

P

Q

10% cut down

Computer controlEngine output = Pump output

When CPU-system is failed

CPU Back-up System

New CPU Back-up SystemThe chances of computer failure arevery few, but if it happens, a new CPUback-up system keeps the engine andhydraulic system operating to allowthe machine going at 90% normalcapacity.

ENGINE

Model: Mitsubishi 6D34-TLU2F

Type: Direct injection, water-cooled, 4-cycle

diesel engine with intercooled turbocharger

(Comply with Tier II Regulation: Europe)

No. of cylinders: 6

Bore and strokes: 104 mm � 115 mm

Displacement: 5,861 cc

Rated power output: 170 PS (168 HP) NET at

2,100 rpm

(SAE J1349)

125 kW NET at 2,100 rpm (ISO 9249)

Max. torque: 63.2 kgf•m NET at

1,600 min-1 (rpm) (SAE J1349)

620 N•m NET at

1,600 min-1 (rpm) (ISO 9249)

HYDRAULIC SYSTEM

Pump: Two variable displacement pumps + 1

gear pump

Max. discharge flow: 2 � 240 liters/min

Max. discharge pressure:Boom, arm and bucket: 34.3 MPa (350 kg/cm2)

Power Boost: 37.8 MPa (385 kg/cm2)

Propel circuit: 34.3 MPa (350 kg/cm2)

Swing circuit: 29.4 MPa (300 kg/cm2)

Control circuit: 5.0 MPa (51 kg/cm2)

Pilot control pump: Gear type

Control valves: 6-spool

Oil cooler: Finned tube, forced ventilation

CAB & CONTROL

All-weather, sound-suppressed steel cab is mounted on the silicon-

sealed viscous mounts and fitted with an insulated floor mat. Large,

tinted safety-glass windows, with pull-type upper front window and

removable lower front window. Seven-way adjustable dual-slide

seat with wrist-action levers, rotary-type electric throttle, safety lock

lever, and multi-display monitor. Ventilated, pressurized climate

control system that brings outside air into cab. Intermittent

windshield wiper with two-jet washer, light action cab door, skylight,

cab light (interior), coat hook, and utility box.

TRAVEL SYSTEM

Travel motors: Independent, axial-piston, two-step motorsBrakes: Hydraulic disc brakesTrack shoes: 51 each sideTravel speed: 6.0/4.0 km/hDrawbar pulling force: 228 kN (23,300 kgf)-SAE J1349 MAY91 Gradeability: 35° (70%)Ground clearance: 460 mm

SWING SYSTEM

Brake: Hydraulic, locking automatically when the swing control lever is in neutral position

Parking brake: Hydraulic disc brakeSwing speed: 11.0 rpmTail swing radius: 2,980 mmMin. front swing radius: 3,880 mm

BOOM, ARM AND BUCKETBoom cylinders (2): 135 mm � 1,235 mmArm cylinder: 140 mm � 1,635 mmBucket cylinder: 125 mm � 1,200 mm

REFILLING CAPACITIES ANDLUBRICATIONS

Fuel tank: 340 litersCooling system: 22 litersEngine oil: 24 litersTravel reduction gear: 2 � 4.7 litersSwing reduction gear: 15.3 litersHydraulic oil:Tank (oil level): 156 litersHydraulic system: 260 liters

ATTACHMENTS

Arm length: 2.98 m Standard bucket capacity:SAE heaped: 1.2 m3

CECE heaped: 1.0 m3

Bucket Opening width:With side cutters: 1,320 mmWithout side cutters: 1,270 mmNumber of teeth: 5

SPECIFICATIONSSK250LC

F Ground clearance* 460 G Tail swing radius 2,980

G’ Distance from center 2,940of swing to rear end

H Tumbler distance 3,850

I Overall length of crawler 4,660J Track gauge 2,590 K Shoe width 600/700/800

L Overall width of 2,710 upperstructure

C Overall width (600 mm shoe) 3,190 D Overall height (to top of cab) 2,940E Ground clearance of rear end* 1,060

Arm StandardRange 2.98 m

a- Max. digging reach 10.31

b- Max. digging reach at 10.14 ground level

c- Max. digging depth 7.03 c’- Max depth of bucket hinge pin 5.54d- Max.digging height 9.77 d’- Max. height of bucket hinge pin 8.34 e- Max dumping clearance 6.85 f- Min. dumping clearance 2.52g- Max. vertical wall digging depth 6.21 h- Min. front swing radius 3.88

i- Horizontal digging stroke 5.26 at ground level

j- Digging depth for 6.85 2.4 m flat bottom

Bucket capacity 1.2 SAE heaped m3

Digging Force (ISO 6015) Unit: kN (kgf)

JC

L

F

D

K

E

HI

G, G’

A

B

WORKING RANGES

Arm lengthStandard2.98 m

Bucket digging force165 (16,800)182 (18,600)*

Arm crowding force113 (11,500)125 (12,700)

DIMENSIONS

Unit: m

Unit: mm

*Power Boost engaged.

* Without including height of shoe lug.

9 m

10 m

8 m

7 m

8 m

9 m

7 m

6 m

5 m

1 m2 m3 m4 m5 m6 m7 m8 m9 m10 m11 m

1 m

2 m3 m

4 m

4 m

5 m

6 m

a

bh

d’

g

de

f

i

c’c j

2.4 (8')

StandardArm length 2.98 m

A Overall length 10,080

B Overall height (to top of boom) 3,050

OPERATING WEIGHT AND GROUND PRESSUREIn standard trim, with standard boom, 2.98 m arm, and 1.2 m3 SAE heaped bucket.

Shape Triple grouser shoe (even height)Shoe width mm 600 700 800Ovedrall width mm 3,190 3,290 3,390Ground pressure kPa (kg/cm2) 48 (0.49) 41 (0.42) 37 (0.37)OPerating weight kg 24,200 24,400 24,700

STANDARD EQUIPMENT• Engine, MITSUBISHI 6D34-TLU2F, turbocharger, intercooler• Working mode selector (Assist mode, Manual mode, or

Breaker mode)• Power Boost• Swing rebound prevention system• Sequenced arm regeneration system• Straight travel system• Automatic shift down two-speed travel• Automatic engine deceleration• Sealed and lubricated tracks• Heavy duty batteries (2 � 12V - 96Ah)• Starting motor (24V - 5 kW), 35 amp alternator• Easy removable aluminium radiator• Large capacity water separator• Towing eyes• Aluminium hydraulic oil cooler• Double element air cleaner• Auto warm-up system• Automatic engine shut-down at low engine oil pressure• Horn, electric• One side mirror• Two front and two rear working lights• Swing flashers• Automatic swing brake• Two control levers, pilot-operated

• Cab, all-weather sound suppressed type with ashtray, cigarette lighter, cab light (interior), coat hook, floor mat, 4-wayadjustable seat, retractable seatbelt, head rest, hand rails,heater and defroster, intermittent windshield wiper with double-spray washer, sunshade, skylight, tinted safety glass, pull-typefront window and removable lower front window

• Instrument panel: Easy-to-read multi-display monitor• Automatic climate control• Radio, AM/FM Stereo with speakers

OPTIONAL EQUIPMENT• Wide range of buckets• Various optional arms• Wide range of shoes• Auto Idling Stop (AIS)• Front guard protective structures• Additional hydraulic circuit• FOPS-compliant head guard

Note: Standard and optional equipment may vary. Consult yourKOBELCO dealer for specifics.

SK250LC

Little Details Make a Big Difference…Large-sizebattery box

Easy-to-clean floormat

Sunshadeprotects theoperator fromoverheadsunlight

Hammer to break glassin case of emergency.

FOPS-CompliantHead Guard(Option)The cab clears ISO-rated FOPS Standards.Equipped with theoptional extra-strengthhead guard.

Finish with round trimat the front of cab forquality appearance.

Insulating plateprevents hydraulic oilfrom spattering on theengine and themuffler.

Note: This catalog may contain attachments and optional equipment that are not available in your area. And it may contain photographs of machines with specifications thatdiffer from those of machines sold in your areas. Please consult your nearest KOBELCO distributor for those items you require. Due to our policy of continuous productimprovements all designs and specifications are subject to change without advance notice. Copyright by No part of this catalog may reproducted in any manner without notice.

Thermal guardprevents contactwith hotcomponents.

2005031000 TF Printed in JapanBulletin No. SK250LC-Greener-CH-102

17-1, Higashigotanda 2-chome, Shinagawa-ku, Tokyo, 141-8626, JAPANTel: +81 (0) 3-5789-2126 Fax: +81 (0) 3-5789-2134http://www.kobelco-kenki.co.jp/china_index.html

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