Komatsu PC490LC-10 MH

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Choice of 2-piece front 16.8 m 55' or 3-piece front 16.5 m 54' with underslung hydraulic cylinders, boom/arm holding valves and boom/arm hose burst valves

Optimized Hydraulic System (OHS) valves to adjust work equipment speed for a specific job

Operator control levers for grapple open-closerotate and magnet charge-discharge

25 kw generator (Baldor) hydraulically driven with controller mounted in the cab riser

Auxiliary hydraulic pump to drive generator or other attachment

Plumbing for grapple attachment

Electrical cable for magnet attachment and magnet connecting link

Carbody widened and reinforced, retractable for shipping

Additional counterweight with reinforced revolving frame

78" cab riser, manual tilt, with front window guard

Large slip resistant platform with steps and handrails for easy cab access

Centralized grease points at boom foot

Parts and operator manuals

For Use In:
Scrap Processing
■ Stockpiling of recycled materials
■ Transfer station material feeding
Bulk Material Handling
■ Coal, coke, and ore
■ Sand and gravel
■ Grain

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.


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
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    
Type . . HydrauMind (Hydraulic Mechanical Intelligence New Design) system, closed-center system with load sensing valves and pressure compensated valves    
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 7" x 59" x 5" 177.8 mm x 1499 mm x 127 mm
Arm / 1 7.5" x 78" x 5" 190.5 mm x 1981 mm x 127 mm
Auxiliary pump for generator:    
Maximum flow 36.7 gal/min 139 ltr/min
Maximum pressure 3,500 psi 24.2 MPa
246 kg/cm²    
Mounting flange   SAE-B, 2 bolt
Drive spline   15T-16/32DP
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
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   4 each side
Number of track rollers   8 each side
Coolant and 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)    
Operating weight without work tool (approximate)    
Operating weight includes KO2US55 2-piece 16.8 m / 55' front, counterweight for MH 12317 kg / 27,450 lb, widen carbody, 78" cab riser, 25kw generator, rated capacities of lubricants, coolant, full fuel tank, operator and standard equipment.    
Triple-Grouser Shoes 28" 700 mm
Operating Weight 126,530 lb 57410 kg
Ground Pressure 13.4 psi 0.94 kg/cm²
Triple-Grouser Shoes 31.5'' 800 mm
Operating Weight: 127,630 lb 57910 kg
Ground Pressure 11.8 psi 0.83 kg/cm²
Triple-Grouser Shoes 35.5" 900 mm
Operating Weight: 128,710 lb 58400 kg
Ground Pressure 10.6 psi 0.74 kg/cm²
For KOUS54 3-piece 16.5 m 54' front, add weight 105 kg 230 lb