A larger machine design and reinforced undercarriage provide up to 10% more lift capacity, improved lateral stability, and added reliability. New engine and hydraulic pump control technology improves operational efficiency and lowers fuel consumption. A powerful Komatsu SAA6D125E-6-A engine provides a net output of 268 kW 359 HP. This engine is EPA Tier 4 Interim and EU stage 3B emissions certified. Komatsu Variable Geometry Turbocharger (KVGT) uses a hydraulic actuator to provide optimum air flow under all speed and load conditions. Komatsu Diesel Particulate Filter (KDPF) captures 90% of particulate matter and provides automatic regeneration that does not interfere with daily operation. Large displacement high efficiency pumps provide higher flow output at a lower engine speed and efficient operation. Two boom mode settings provide power mode for maximum digging force or smooth mode for fine grading operations. Komatsu Closed Center Load Sensing (CLSS) hydraulic system provides quick response amd smooth operation to maximize productivity. Large LCD color monitor panel: ■ 7" high resolution screen ■ Provides "Eco-Guidance" for fuel efficient operation ■ Enhanced attachment control Rearview monitoring system (standard) Enhanced working modes are designed to match engine speed, pump delivery, and system pressure to the application. Enhanced working environment ■ High back, heated, and air suspension operator seat ■ Integrated ROPS cab design (ISO 12117-2) ■ Cab meets ISO Level 1 Operator Protective Guard (OPG) top guard (ISO 10262) Equipment Management Monitoring System (EMMS) continuously monitors machine operation and vital systems to identify machine issues and assist with troubleshooting. Komatsu designed and manufactured components Hydraulically driven variable speed fan reduces parasitic load on the engine to improve fuel consumption and can be reversed to simplify cooler maintenance. Guardrails (standard) located on the machine upper structure provide a convenient work area in front of the engine. Battery disconnect switch allows a technician to disconnect the power supply before servicing the machine. Heavy duty boom design with large one piece castings provide increased strength and reliability. KOMTRAX^® equipped machines can send location, SMR and operation maps to a secure website utilizing wireless technology. Machines also relay error codes, cautions, maintenance items, fuel levels, and much more.

Engine

Model		Komatsu SAA6D125E-6-A*
Type		Water-cooled, 4-cycle, direct injection
Aspiration		Turbocharged, aftercooled, cooled EGR
Number of cylinders		6
Bore	4.92"	125 mm
Stroke	5.91"	150 mm
Piston displacement	674 in³	11.04 ltr
Horsepower
SAE J1995 : Gross	362 HP	270 kW
ISO 9249/SAE J1349 : Net	359 HP	268 kW
Rated rpm		1900 rpm
Fan drive type		Hydraulic
Governor		All-speed control, electronic.
*EPA Tier 4 Interim and EU stage 3B emissions certified

Hydraulics

Number of selectable working modes		6
Main pump:
Type		Variable displacement piston type
Pumps for		Boom, arm, bucket, swing, and travel circuits
Maximum flow	184 U.S. gal/min	695 ltr/min
Supply for control circuit		Self-reducing valve
Hydraulic motors:
Travel		2 x axial piston motor with parking brake
Swing		1 x axial piston motor with swing holding brake
Relief valve setting:
Implement circuits	5,400 psi	380 kgf/cm²/ 37.3 MPa
Travel circuit	5,400 psi	380 kgf/cm² / 37.3 MPa
Swing circuit	4,055 psi	285 kgf/cm²/ 27.9 MPa
Pilot circuit	470 psi	33 kgf/cm² / 3.2 MPa
Hydraulic cylinders:
Number of cylinders	Bore x Stroke x Rod Diameter	Bore x Stroke x Rod Diameter
Boom / 2	6.3" x 61.8" x 4.3"	160 mm x 1570 mm x 110 mm
Arm / 1	7.3" x 71.7" x 4.7"	185 mm x 1820 mm x 120 mm
Bucket / 1	6.3" x 50" x 4.3"	160 mm x 1270 mm x 110 mm

Drives & Brakes

Steering control		Two levers with pedals
Drive method		Hydrostatic
Maximum drawbar pull	73,987 lb	329 kN / 33560 kg
Gradeability	35°	70%
Maximum travel speed: (Auto-Shift)
High	3.4 mph	5.5 km/h
Mid	2.6 mph	4.2 km/h
Low	1.9 mph	3.0 km/h
Service brake		Hydraulic lock
Parking brake		Mechanical disc brake

Swing System

Drive method		Hydrostatic
Swing reduction		Planetary gear
Swing circle lubrication		Grease-bathed
Service brake		Hydraulic lock
Holding brake/Swing lock		Mechanical disc brake
Swing speed		9.1 rpm
Swing torque	97,024 ft. lbs.	13414 kg•m

Undercarriage

Center frame		X-frame
Track frame		Box-section
Seal of track		Sealed track
Track adjuster		Hydraulic
Number of shoes		49 each side
Number of carrier rollers		2 each side
Number of track rollers		8 each side

Coolant & Lubricant Capacity (refilling)

Fuel tank	172 U.S. gal	650 ltr
Coolant	11.6 U.S. gal	44 ltr
Engine	10.0 U.S. gal	38.0 ltr
Final drive, each side	2.9 U.S. gal	11.0 ltr
Swing drive	5.3 U.S. gal	20 ltr
Hydraulic tank	65.5 U.S. gal	248 ltr
Hydraulic system	124.7 U.S. gal	472 ltr

Operating Weight (approximate)

PC490LC-10 Fixed Gauge
Shoes	28"	700 mm
Operating Weight	104,700 lb	47490 kg
Ground Pressure	10.28 psi	0.72 kg/cm²
Shoes	31.5''	800 mm
Operating Weight:	105,800 lb	47990 kg
Ground Pressure	9.12 psi	0.64 kg/cm²
Shoes	35.5"	900 mm
Operating Weight:	106,880 lb	48480 kg
Ground Pressure	8.25 psi	0.57 kg/cm²
PC490LC-10 Variable Gauge
Shoes	28"	700 mm
Operating Weight	107,070 lb	48565 kg
Ground Pressure	10.51 psi	0.74 kg/cm²
Shoes	31.5''	800 mm
Operating Weight:	108,170 lb	49065 kg
Ground Pressure	9.32 psi	0.66 kg/cm²
Shoes	35.5"	900 mm
Operating Weight:	109,250 lb	49555 kg
Ground Pressure	8.43 psi	0.59 kg/cm²
Component Weights
Arm including bucket cylinder and linkage
3380 mm / 11'1" arm assembly	4,720 lb	2141 kg
4000 mm / 13'1" arm assembly	5,309 lb	2408 kg
4800 mm / 15'9" arm assembly	5,831 lb	2645 kg
One piece HD boom including arm cylinder
7060 mm / 23'2" boom asssembly	8,856 lb	4017 kg
Boom cylinders x 2	807 lb	366 kg
Counterweight (standard)	21,936 lb	9950 kg
Counterweight (for removal system)	19,864 lb	9010 kg
2.25 m³ / 2.94 yd³ bucket - 54" width	4,117 lb	1867 kg