PC1250LC-8 MH

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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  1413 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 emissions certified.     
Hydraulic System   
Type    Electronic Open-center Load Sensing System (EOLSS) 
Number of selectable working modes   
Main pumps:     
Type    Variable capacity piston pumps 
Pumps for    Boom, arm, bucket, swing, and travel circuits 
Maximum flow:     
For implement and travel    2 x 494 ltr/min 2 x 130.5 U.S. gpm 
For swing    1 x 600 ltr/min 1 x 158.5 U.S. gpm 
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 / Number of cylinders  bore x stroke  bore x stroke 
Boom / 2  8.9" x 94.1"  225 mm x 2390 mm 
Arm / 1  10.0" x 110.0"  254 mm x 2794 mm 
Swing System   
Driven by    Hydraulic motors (2) 
Swing reduction    Planetary gear 
Swing circle lubrication    Grease bathed 
Swing lock    Oil disc brake 
Swing speed    5.5 rpm 
Drives 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  70000 kg / 686 kN 
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 
Parking brake    Oil disc brake 
Undercarriage   
Center frame    H-leg frame 
Track frame    Box-section 
Track type    Sealed 
Track adjuster    Hydraulic 
No. of shoes    55 each side 
No. of carrier rollers    3 each side 
No. of track rollers    10 each side 
Coolant & 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 
Operating Weight (approximate)   
Operating weight w/o Grapple:     
55' / 16.8 m  244,418 lb  110868 kg 
70' / 21.3 m  279,157 lb  126626 kg 

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