PC1250LC-8

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Engine   
Model    Komatsu SAA6D170E-5 
Type    4-cycle, water-cooled, direct injection 
Aspiration    Turbocharged, aftercooled, cooled EGR 
Number of cylinders   
Bore  6.69"  170 mm 
Stroke  6.69"  170 mm 
Piston displacement  1,413 in³  23.15 ltr 
Governor    All-speed, electronic 
Horsepower:     
SAE J1995 - Gross  688 HP  514 kW 
ISO 9249 / SAE J1349 - Net  672 HP  502 kW 
Hydraulic fan at maximum speed - Net  620 HP  463 kW 
Rated rpm    1800 rpm 
Fan drive type    Hydraulic, variable speed, reversible 
EPA Tier 3 and EU stage 3A emission certified.     
Hydraulic System   
Type    Open-center load sensing system 
Number of selectable working modes   
Main pump:     
Type    Variable capacity piston pumps 
Pumps for    Boom, arm, bucket, swing, and travel circuits 
Maximum flow:     
For implement and travel  2 x 130.5 U.S. gpm  2 x 494 ltr/min 
For swing  1 x 158.5 U.S. gpm  1 x 600 ltr/min 
Sub-pump for control circuit    Gear pump 
Hydraulic motors:     
Travel    2 x axial piston motors with parking brake 
Swing    2 x axial piston motors with swing holding brake 
Relief valve setting:     
Implement circuits  4,550 psi  31.4 MPa
320 kg/cm² 
Travel circuit  4,980 psi  34.3 MPa
350 kg/cm² 
Swing circuit  3,910 psi  27.0 MPa
275 kg/cm² 
Pilot circuit  430 psi  2.9 MPa
30 kg/cm² 
Hydraulic cylinders:     
Cylinder / Number of cylinders  Bore x Stroke  Bore x Stroke 
Backhoe     
Boom / 2  8.9" x 94.1"  225 mm x 2390 mm 
Arm / 1  9.8" x 95.9"  250 mm x 2435 mm 
Bucket:     
Std / 2  6.3" x 71.8"  160 mm x 1825 mm 
SP / 2  6.3" x 76.8"  160 mm x 1950 mm 
Swing System   
Driven by    2 x Hydraulic motor 
Swing reduction    Planetary gear 
Swing circle lubrication    Grease-bathed 
Swing lock    Oil disc brake 
Swing speed    5.5 rpm 
Drive and Brakes   
Steering control    Two levers with pedals 
Drive method    Fully hydrostatic 
Travel motor    Axial piston motor, in-shoe design 
Reduction system    Planetary double reduction 
Maximum drawbar pull  154,320 lb  686 kN
70000 kg 
Gradeability    70% 
Maximum travel speed:     
High  2.0 mph  3.2 km/h 
Low  1.3 mph  2.1 km/h 
Service brake    Hydraulic lock 
Undercarriage   
Center frame    H-leg frame 
Track frame    Box-section 
Track type    Sealed 
Track adjuster    Hydraulic 
No. of shoes:     
Standard, SP, Shovel    48 each side 
LC    55 each side 
No. of carrier rollers    3 each side 
No. of track rollers:     
Standard, SP, Shovel    8 each side 
LC    10 each side 
Coolant and Lubricant Capacity (refilling)   
Fuel tank  359.3 US gal  1360 ltr 
Radiator  37.5 US gal  142 ltr 
Engine  22.7 US gal  86 ltr 
Final drive, each side  5.5 US gal  21 ltr 
Swing drive  2 x 6.4 US gal  2 x 24.3 ltr 
Hydraulic tank  177.0 US gal  670 ltr 
PTO  3.6 US gal  13.5 ltr 

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