PC490LC-10

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Engine   
Model    Komatsu SAA6D125E-6-A* 
Type    Water-cooled, 4-cycle, direct injection 
Aspiration    Turbocharged, aftercooled, cooled EGR 
Number of cylinders   
Bore  4.92"  125 mm 
Stroke  5.91"  150 mm 
Piston displacement  674 in  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   
Type . . HydrauMind (Hydraulic Mechanical Intelligence New Design) system, closed-center system with load sensing valves and pressure compensated valves 
Number of selectable working modes   
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/cm/ 37.3 MPa 
Travel circuit  5,400 psi  380 kgf/cm / 37.3 MPa 
Swing circuit  4,055 psi  285 kgf/cm/ 27.9 MPa 
Pilot circuit  470 psi  33 kgf/cm / 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 kgm 
 
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)   
Operating weight includes 7060 mm / 23'2" one-piece HD boom, 3380 mm / 11'1" arm, SAE heaped 2.25 m / 2.94 yd bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment. 
PC490LC-10 Fixed Gauge     
Shoes  28"  700 mm 
Operating Weight  104,700 lb  47490 kg 
Ground Pressure  10.28 psi  0.72 kg/cm 
Shoes  31.5''  800 mm 
Operating Weight:  105,800 lb  47990 kg 
Ground Pressure  9.12 psi  0.64 kg/cm 
Shoes  35.5"  900 mm 
Operating Weight:  106,880 lb  48480 kg 
Ground Pressure  8.25 psi  0.57 kg/cm 
PC490LC-10 Variable Gauge     
Shoes  28"  700 mm 
Operating Weight  107,070 lb  48565 kg 
Ground Pressure  10.51 psi  0.74 kg/cm 
Shoes  31.5''  800 mm 
Operating Weight:  108,170 lb  49065 kg 
Ground Pressure  9.32 psi  0.66 kg/cm 
Shoes  35.5"  900 mm 
Operating Weight:  109,250 lb  49555 kg 
Ground Pressure  8.43 psi  0.59 kg/cm 
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 m / 2.94 yd bucket - 54" width  4,117 lb  1867 kg 

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