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Komatsu Excavators PC390LC-10

Komatsu Excavators PC390LC-10
Specifications :
Engine
Model
Komatsu SAA6D114E-5*
Type
Water-cooled, 4-cycle, direct injection
Aspiration
Turbocharged, aftercooled, cooled EGR
Number of cylinders
6
Bore4.49"114 mm
Stroke5.69"144.5 mm
Piston displacement540 in³8.85 ltr
Horsepower

SAE J1995 : Gross271 HP202 kW
ISO 9249/SAE J1349 : Net257 HP192 kW
Rated rpm
1950 rpm
Fan drive type
Mechanical
Governor
All-speed control, electronic.
*EPA Tier 4 Interim and EU Stage 3B emissions certified.


Hydraulic System
Type . . HydrauMind (Hydraulic Mechanical Intelligence New Design) system, closed-center system with load sensing valves and pressure compensated valves
Number of selectable working modes
6
Main pump:

Type
Variable displacement piston type
Pumps for
Boom, arm, bucket, swing, and travel circuits
Maximum flow141 U.S. gal/min535 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 circuits5,400 psi380 kgf/cm²/ 37.3 MPa
Travel circuit5,400 psi380 kgf/cm² / 37.3 MPa
Swing circuit4,050 psi285 kgf/cm²/ 27.9 MPa
Pilot circuit470 psi33 kgf/cm² / 3.2 MPa
Hydraulic cylinders:

Number of cylindersBore x Stroke x Rod DiameterBore x Stroke x Rod Diameter
Boom / 25.5" x 58.3" x 3.9"140 mm x 1480 mm x 100 mm
Arm / 16.3" 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" Arms5.5" x 50.6" x 3.9"140 mm x 1285 mm x 100 mm
Bucket / 1 - for 2.54 m 8'4" Arm5.9" x 50.6" x 4.3"150 mm x 1285 mm x 110 mm

Swing System
Steering control
Two levers with pedals
Drive method
Hydrostatic
Maximum drawbar pull73,880 lb329 kN / 33510 kg
Gradeability35°70%
Maximum travel speed: (Auto-Shift)

High3.4 mph5.5 km/h
Mid2.7 mph4.4 km/h
Low1.9 mph3.0 km/h
Service brake
Hydraulic lock
Parking brake
Mechanical disc brake

Drives and Brakes
Steering control
Two levers with pedals
Drive method
Hydrostatic
Maximum drawbar pull73,880 lb329 kN / 33510 kg
Gradeability35°70%
Maximum travel speed: (Auto-Shift)

High3.4 mph5.5 km/h
Mid2.7 mph4.4 km/h
Low1.9 mph3.0 km/h
Service brake
Hydraulic lock
Parking brake
Mechanical disc brake

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 and Lubricant Capity (refilling)
Fuel tank159.8 U.S. gal605 ltr
Coolant9.7 U.S. gal37 ltr
Engine9.2 U.S. gal35.0 ltr
Final drive, each side2.4 U.S. gal9.0 ltr
Swing drive3.6 U.S. gal13.7 ltr
Hydraulic tank49.7 U.S. gal188 ltr
Hydraulic system96.4 U.S. gal365 ltr

Operating Weight (Aproximate)
Operating weight includes 6500 mm / 21'3" one-piece HD boom, 3185 mm / 10'5" arm, SAE heaped 1.96 m³ / 2.56 yd³ bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.
Shoes28"700 mm
Operating Weight86,998 lb39461 kg
Ground Pressure8.31 psi0.59 kg/cm²
Shoes31.5''800 mm
Operating Weight:88,107 lb39965 kg
Ground Pressure7.36 psi0.52 kg/cm²
Shoes33.5"850 mm
Operating Weight:89,071 lb40402 kg
Ground Pressure6.62 psi0.46 kg/cm²
Component Weights

Arm including bucket cylinder and linkage:

3185 mm / 10'5" arm assembly3,882 lb1761 kg
4020 mm / 13'2" arm assembly4,383 lb1988 kg
One piece HD boom including arm cylinder:

6500 mm / 21'3" boom assembly6,912 lb3135 kg
Boom cylinders x 2571 lb259 kg
Counterweight15,631 lb7090 kg
1.96 m³ / 2.56 yd³ bucket - 54" width3,425 lb1554 kg


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