PC270LC-8

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Engine   
Model    Komatsu SAA6D107E-1 
Type    Water-cooled, 4-cycle, direct injection 
Aspiration    Turbocharged, aftercooled 
Number of cylinders   
Bore  4.21"  107 mm 
Stroke  4.88"  124 mm 
Piston displacement  408 in³  6.69 ltr 
Horsepower:     
SAE J1995  200 HP  149 kW 
ISO 9249 / SAE J1349  187 HP  140 kW 
Rated rpm    2050 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 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  119 U.S. gal/min  450 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  4,190 psi  295 kgf/cm²
28.9 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  5.5" x 51.2" x 3.9"  140 mm x 1300 mm x 100 mm 
Arm / 1  5.9" x 64.3" x 4.3"  150 mm x 1635 mm x 110 mm 
Bucket / 1  5.5" x 39.7" x 3.9"  140 mm x 1009 mm x 100 mm 
 
Drives and Brakes   
Steering control    Two levers with pedals 
Drive method    Hydrostatic 
Maximum drawbar pull  56,000 lb  249 kN
25400 kg 
Gradeability  35°  70% 
Maximum travel speed: (Auto-Shift)     
High  3.4 mph  5.5 km/h 
Mid  2.5 mph  4.1 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    10.5 rpm 
 
Undercarriage   
Center frame    X-frame 
Track frame    Box-section 
Track type    Sealed track 
Track adjuster    Hydraulic 
Number of shoes (each side):    48 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  105.7 U.S. gal  400 ltr 
Coolant  5.4 U.S. gal  20.6 ltr 
Engine  6.1 U.S. gal  23.1 ltr 
Final drive, each side  2.2 U.S. gal  8.5 ltr 
Swing drive  2.2 U.S. gal  8.2 ltr 
Hydraulic tank  34.9 U.S. gal  132 ltr 
 
Operating Weights (approximate)   
Operating weight including 5850 mm / 19'2" one-piece boom, 3045 mm / 10'0" arm, SAE heaped 1.41 m³ 1.85 yd³ backhoe bucket*, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment. 
Shoes:  Operating Weight:  Ground Pressure: 
28" / 700 mm  65,336 lb
29636 kg 
6.95 psi
0.49 kgf/cm² 
31.5" / 800 mm  66,399 lb
30118 kg 
6.18 psi
0.43 kgf/cm² 
33.5" / 850 mm  67,393 lb
30569 kg 
5.90 psi
0.42 kgf/cm² 
    *Komatsu 1.85 cu. yd. bucket (2,304 lb) 

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