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Komatsu PC390LCi-11 LARGE EXCAVATORS

Komatsu PC390LCi-11 LARGE EXCAVATORS

BucketCapacityMax:
2.91
BucketCapacityMin:
0.89
Horsepower:
257 @1950 rpm
OperatingWeightMax:
90441
OperatingWeightMin:
87867
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Product Feature

intelligent Machine Control

Intelligent Machine Control excavator with semi-automatic control allows the operator to improve work efficiency as compared to conventional aftermarket machine guidance (indicate only) or manual operation. Rough digging to finish grading, intelligent Machine Control minimizes over-excavation to make every pass count.

Auto Grade Assist

With the auto grade assist function, the operator moves the arm, the boom adjusts the bucket height automatically, tracing the target surface and minimizing digging too deep. This allows the operator to perform rough digging without worrying about the design surface, and to perform fine digging by operating the arm lever only. The working range is expanded by holding the lever to move the boom downward.

Auto Stop Control

During boom or bucket operation, the work equipment automatically stops when the bucket edge reaches the design surface, thus minimizing damage to the design surface.

Minimum Distance Control

The intelligent Machine Control excavator controls the bucket by automatically selecting the point on the bucket closest to the target surface. Should the machine not be facing a sloped surface at a right angle, it will still follow the target surface and minimize digging below it.

Komatsu intelligent Machine Control Components

Standard factory installed intelligent Machine Control system for 3D GNSS machine guidance and semi-automatic control. Sensor package includes stroke sensing hydraulic cylinders, inertial measurement units, and GNSS antennas.

Stroke Sensing Hydraulic Cylinder

Sensor package with stroke sensing hydraulic cylinders provides real time position, immediately displayed to the operator. This is in contrast to conventional aftermarket machine guidance (indicate only) systems with tilt sensors that require time to stabilize.

Control Box

The monitor of the Komatsu intelligent Machine Control (control box) uses a large 12.1" (30.7 cm) touch screen for visibility and ease of use. The screen layout is customizable to display information in an easily understood fashion with a variety of views including 3D, plan, and section.

Facing Angle Compass

The orientation and color of the facing angle compass’s arrow shows the operator the facing angle of the bucket edge relative to the target surface. This allows the bucket edge to be accurately positioned square with the target surface, which is useful when finishing slopes.

Engine

Model
Komatsu SAA6D114E-6*
Type
Water-cooled, 4-cycle, direct injection
Aspiration
Variable Geometry Turbocharger with air-to-air aftercooler and EGR
Number of cylinders
6
Bore 114 mm 4.49"
Stroke 144.5 mm 5.69"
Piston displacement 8.85 ltr 540 in³
Horsepower:

    SAE J1995 - Gross 202 kW 271 HP
    ISO 9249/SAE J1349 - Net 192 kW 257 HP
    Rated rpm
1950
Governor
All-speed control, electronic.
Fan drive method for radiator cooling
Mechanical
*EPA Tier 4 Final emissions certified

Hydraulics

Type: HydrauMind (Hydraulic Mechanical Intelligence) system, closed-center system with load sensing valve and pressure compensated valves, 6 selectable working modes

Drives & Brakes

Steering control Two levers with pedals
Drive method Hydrostatic
Maximum drawbar pull 329 kN  33510 kgf 73,880 lb
Gradeability 70% 35°
Maximum travel speed: (Auto-Shift):
    High 4.3 km/h 2.7 mph
    Mid 3.5 km/h 2.2 mph
    Low 2.8 km/h 1.7 mph
Service brake Hydraulic lock
Parking brake Mechanical disc brake

Swing System

Drive method Hydrostatic motor
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 11386 kg•m 82,313 ft. lbs.

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 Capacity (refilling)

Fuel tank 605 ltr 159.8 U.S. gal
Coolant 37 ltr 9.7 U.S. gal
Engine 39 ltr 10.2 U.S. gal
Final drive, each side 10.5 ltr 2.8 U.S. gal
Swing drive 14 ltr 3.7 U.S. gal
Hydraulic tank 188 ltr 49.7 U.S. gal
Diesel Exhaust Fluid (DEF) tank 39 ltr 10.3 U.S. gal

Operating Weight (approximate)

Operating weight includes 6500 mm 21'3" one-piece HD boom, 3185 mm 10'5" arm, SAE heaped 1.96 m3 2.53 yd3 bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.

Product Parameter

Model
Komatsu SAA6D114E-6*
Type
Water-cooled, 4-cycle, direct injection
Aspiration
Variable Geometry Turbocharger with air-to-air aftercooler and EGR
Number of cylinders
6
Bore 114 mm 4.49"
Stroke 144.5 mm 5.69"
Piston displacement 8.85 ltr 540 in³
Horsepower:

    SAE J1995 - Gross 202 kW 271 HP
    ISO 9249/SAE J1349 - Net 192 kW 257 HP
    Rated rpm
1950
Governor
All-speed control, electronic.
Fan drive method for radiator cooling
Mechanical
*EPA Tier 4 Final emissions certified


Main Pump:
    Pumps for   Boom, arm, bucket, swing, and travel circuits
    Type Variable displacement piston type
    Maximum flow 535 ltr/min 141 U.S. gal/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 37.3 MPa 380 kgf/cm²
5,400 psi
    Travel circuit 37.3 MPa 380 kgf/cm² 5,400 psi
    Swing circuit 27.9 MPa 285 kgf/cm²
4,050 psi
    Pilot circuit 3.2 MPa 33 kgf/cm²
470 psi
Hydraulic cylinders:
Number of cylinders Bore x Stroke x Rod Diameter Bore x Stroke x Rod Diameter
    Boom / 2 140 mm x 1480 mm x 100 mm 5.5" x 58.3" x 3.9"
    Arm / 1 160 mm x 1825 mm x 110 mm 6.3" x 71.9" x 4.3"
    Bucket / 1 - for 3.2 m 10'5" and 4.0 m 13'2" Arms 140 mm x 1285 mm x 100 mm 5.5" x 50.6" x 3.9"
    Bucket / 1 - for 2.54 m 8'4" Arm 150 mm x 1285 mm x 110 mm 5.9" x 50.6" x 4.3"

Steering control Two levers with pedals
Drive method Hydrostatic
Maximum drawbar pull 329 kN  33510 kgf 73,880 lb
Gradeability 70% 35°
Maximum travel speed: (Auto-Shift):
    High 4.3 km/h 2.7 mph
    Mid 3.5 km/h 2.2 mph
    Low 2.8 km/h 1.7 mph
Service brake Hydraulic lock
Parking brake Mechanical disc brake

Drive method Hydrostatic motor
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 11386 kg•m 82,313 ft. lbs.

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

Fuel tank 605 ltr 159.8 U.S. gal
Coolant 37 ltr 9.7 U.S. gal
Engine 39 ltr 10.2 U.S. gal
Final drive, each side 10.5 ltr 2.8 U.S. gal
Swing drive 14 ltr 3.7 U.S. gal
Hydraulic tank 188 ltr 49.7 U.S. gal
Diesel Exhaust Fluid (DEF) tank 39 ltr 10.3 U.S. gal

Shoes 700 mm 28"
Operating Weight 39856 kg 87,867 lb
Ground Pressure 0.61 kg/cm² 8.61 psi
Shoes 800 mm 31.5''
Operating Weight: 40359 kg 88,976 lb
Ground Pressure 0.54 kg/cm² 7.63 psi
Shoes 900 mm 35.5"
Operating Weight: 40796 kg 89,940 lb
Ground Pressure 0.48 kg/cm² 6.86 psi

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