PC450LC-8

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Engine   
Model    Komatsu SAA6D125E-5 
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  362 HP  270 kW 
ISO 9249 / SAE J1349  345 HP  257 kW 
Rated rpm    1900 rpm 
Fan drive type    Mechanical 
Governor    All-speed control, electronic 
EPA Tier 3 and EU stage 3A emission certified.     
 
Hydraulics   
Type    HydrauMind (Hydraulic Mechanical Intelligence New Design) system, closed-center with load sensing 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  182 U.S. gal/min  690 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 / 37.3 MPa  380 kgf/cm 
Travel circuit  5,400 psi / 37.3 MPa  380 kgf/cm 
Swing circuit  4,050 psi / 27.9 MPa  285 kgf/cm 
Pilot circuit  470 psi / 3.2 MPa  33 kgf/cm 
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
except 7'10" / 2.4 m 
7.3" x 71.7" x 4.7"  185 mm x 1820 mm x 120 mm 
Arm / 1
for 7'10" / 2.4 m 
7.3" x 62.6" x 4.7"  185 mm x 1590 mm x 120 mm 
Bucket / 1  6.3" x 50" x 4.3"  160 mm x 1270 mm x 110 mm 
 
Drives and Brakes   
Steering control    Two levers with pedals 
Drive method    Hydrostatic 
Maximum drawbar pull  73,880 lb  329 kN
33510 kgf 
Gradeability  35  70% 
Maximum travel speed:     
High  3.4 mph  5.5 km/h 
Medium
(Auto-Shift) 
2.7 mph  4.4 km/h 
Low
(Auto-Shift) 
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    9.0 rpm 
Swing torque  97,024 ft. lbs.  13414 Kgm 
 
Undercarriage   
Center frame    X-frame 
Track frame    Box-section 
Seal of track    Sealed 
Track adjuster    Hydraulic 
Number of shoes    49 each side 
Number of carrier rollers    2 each side 
Number of track rollers (each side)    8 each side 
 
Coolant and Lubricant Capacity (refilling)   
Fuel tank  172 U.S. gal  650 ltr 
Coolant  9.7 U.S. gal  36.8 ltr 
Engine  10.0 U.S. gal  38.0 ltr 
Final drive, each side  3.2 U.S. gal  12.0 ltr 
Swing drive  4.3 U.S. gal  16.2 ltr 
Hydraulic tank  65.5 U.S. gal  248 ltr 
 
Operating Weight (APROXIMATE)   
Operating weight including 7060 mm 23'2" one-piece boom, 3380 mm 11'1" arm, SAE heaped 1.94 m 2.54 yd bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment. 
PC450LC-8     
Shoes  28"  700 mm 
Operating Weight  98,788 lb  44810 kg 
Ground Pressure  9.74 psi  0.68 kgf/cm 
Shoes  31.5"  800 mm 
Operating Weight  99,847 lb  45290 kg 
Ground Pressure  8.61 psi  0.60 kgf/cm 
Shoes  35.5"  900 mm 
Operating Weight  100,860 lb  45738 kg 
Ground Pressure  7.74 psi  0.54 kgf/cm 
PC450LC-8 Variable Gauge     
Shoes  28"  700 mm 
Operating Weight  101,158 lb  45865 kg 
Ground Pressure  9.97 psi  0.70 kgf/cm 
Shoes  31.5"  800 mm 
Operating Weight  102,216 lb  46365 kg 
Ground Pressure  8.82 psi  0.62 kgf/cm 
Shoes  35.5"  900 mm 
Operating Weight  103,230 lb  46825 kg 
Ground Pressure  7.92 psi  0.56 kgf/cm 

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