PC390LC-10

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Engine   
Model    Komatsu SAA6D114E-5* 
Type    Water-cooled, 4-cycle, direct injection 
Aspiration    Turbocharged, aftercooled, cooled EGR 
Number of cylinders   
Bore  4.49"  114 mm 
Stroke  5.69"  144.5 mm 
Piston displacement  540 in  8.85 ltr 
Horsepower     
SAE J1995 : Gross  271 HP  202 kW 
ISO 9249/SAE J1349 : Net  257 HP  192 kW 
Rated rpm    1950 rpm 
Fan drive type    Mechanical 
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  141 U.S. gal/min  535 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  4,050 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  5.5" x 58.3" x 3.9"  140 mm x 1480 mm x 100 mm 
Arm / 1  6.3" x 71.9" x 4.3"  160 mm x 1825 mm x 110 mm 
Bucket / 1 - for 3.2 m 10'5" and 4.0 m 13'2" Arms  5.5" x 50.6" x 3.9"  140 mm x 1285 mm x 100 mm 
Bucket / 1 - for 2.54 m 8'4" Arm  5.9" x 50.6" x 4.3"  150 mm x 1285 mm x 110 mm 
 
Drives & Brakes   
Steering control    Two levers with pedals 
Drive method    Hydrostatic 
Maximum drawbar pull  73,880 lb  329 kN / 33510 kg 
Gradeability  35  70% 
Maximum travel speed: (Auto-Shift)     
High  3.4 mph  5.5 km/h 
Mid  2.7 mph  4.4 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    9.5 rpm 
Swing torque  82,313 ft. lbs.  11386 kgm 
 
Undercarriage   
Center frame    X-frame 
Track frame    Box-section 
Track type    Sealed 
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  159.8 U.S. gal  605 ltr 
Coolant  9.7 U.S. gal  37 ltr 
Engine  9.2 U.S. gal  35.0 ltr 
Final drive, each side  2.4 U.S. gal  9.0 ltr 
Swing drive  3.6 U.S. gal  13.7 ltr 
Hydraulic tank  49.7 U.S. gal  188 ltr 
Hydraulic system  96.4 U.S. gal  365 ltr 
 
Operating Weight (approximate)   
Operating weight includes 6500 mm / 21'3" one-piece HD boom, 3185 mm / 10'5" arm, SAE heaped 1.96 m / 2.56 yd bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment. 
Shoes  28"  700 mm 
Operating Weight  86,998 lb  39461 kg 
Ground Pressure  8.31 psi  0.59 kg/cm 
Shoes  31.5''  800 mm 
Operating Weight:  88,107 lb  39965 kg 
Ground Pressure  7.36 psi  0.52 kg/cm 
Shoes  33.5"  850 mm 
Operating Weight:  89,071 lb  40402 kg 
Ground Pressure  6.62 psi  0.46 kg/cm 
Component Weights     
Arm including bucket cylinder and linkage:     
3185 mm / 10'5" arm assembly  3,882 lb  1761 kg 
4020 mm / 13'2" arm assembly  4,383 lb  1988 kg 
One piece HD boom including arm cylinder:     
6500 mm / 21'3" boom assembly  6,912 lb  3135 kg 
Boom cylinders x 2  571 lb  259 kg 
Counterweight  15,631 lb  7090 kg 
1.96 m / 2.56 yd bucket - 54" width  3,425 lb  1554 kg 

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