• 87,867 - 90,441 lbs Operating Weight
  • 257 @1950 rpm Horsepower
  • 0.89 - 2.91 yd¬≥ Bucket Capacity

PC390LCi-11 Large Excavator

The PC390LCi-11 features factory integrated 3D GNSS machine control, increasing productivity and efficiency while providing exceptional stability in applications from utility trenching to mass excavation.

The technology and performance combined in this machine increases your production while reducing material costs, to help you keep moving FORWARD.


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.



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

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


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

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"

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.


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.

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


  • 3 speed travel with auto shift
  • Alternator, 90 Ampere, 24V
  • AM/FM radio
  • Arm holding valve
  • Automatic engine warm-up system
  • Automatic climate control/air conditioner/heater/defroster
  • Auto idle
  • Auto idle shut down, programmable
  • Auxiliary input (3.5mm jack)
  • Batteries, large capacity (2 x 12V)
  • Battery master disconnect switch
  • Boom holding valves
  • Carrier rollers, (2 each side)
  • Converter, (2) x 12V
  • Counterweight, 6920 kg 15,255 lb
  • Dry type air cleaner, double element
  • Electric horn
  • Engine, Komatsu SAA6D114E-6
  • Engine coolant to -25°C -13°F
  • EMMS monitoring system
  • Engine overheat prevention system
  • Extended work equipment grease interval
  • Fan guard structure
  • Fuel priming pump
  • Fuel system pre-filter 10 micron
  • Grease sealed track chain
  • High back air suspension seat, with heat
  • Hydraulic cooling fan (reversible)
  • Hydraulic track adjusters
  • KOMTRAX® Level 5.0
  • Large LCD color monitor, high resolution
  • Lock lever
  • Mirrors, (LH and RH)
  • Operator Protective Top Guard (OPG), Level 1
  • Operator identification system
  • Pattern change valve (ISO to BH control)
  • Power maximizing system
  • PPC hydraulic control system
  • Pump/engine room partition cover
  • Radiator and oil cooler dustproof net
  • Rear reflectors
  • Rearview monitoring system (1 camera)
  • Revolving frame deck guard
  • Revolving frame undercovers
  • ROPS cab (ISO12117-2)
  • Seat belt indicator
  • Seat belt, retractable, 76mm 3"
  • Secondary engine shutoff switch
  • Service valve
  • Skylight
  • Slip resistant foot plates
  • Starter motor, 11.0kW/24V x 1
  • Suction fan
  • Thermal and fan guards
  • Track frame swivel guard
  • Track roller guards, center section
  • Track rollers, 8 (each side)
  • Track shoes, triple grouser, 800mm 31.5"
  • Travel alarm
  • Two boom mode settings
  • Working lights, 2 (boom and RH front)
  • Working mode selection system     


  • Arms
    – 3185 mm 10'5" arm assembly
    – 3185 mm 10'5" arm assembly with piping
    – 4020 mm 13'2" arm assembly
  • Booms
    – 6500 mm 21'3" HD boom assembly
    – 6500 mm 21'3" HD boom assembly with piping
  • Cab guards
    – Lower front window guard
    – Full front guard, OPG Level 1
    – Full front guard, OPG Level 2
    – Bolt-on top guard, OPG Level 2
  • High pressure in-line hydraulic filters
  • Hydraulic control unit, 1 actuator
  • Rain visor
  • Revolving frame undercovers, heavy duty
  • Revolving frame undercovers, severe duty
  • Sun visor
  • Straight travel pedal
  • Track roller guards, full length
  • Track shoes, triple grouser, 700 mm 28"
  • Track shoes, triple grouser, 900 mm 35.5"
  • Working lights, front, two additional cab mounted