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Komatsu PC390LC-11 LARGE EXCAVATORS

Komatsu PC390LC-11 LARGE EXCAVATORS

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

Enhanced Productivity

The PC390LC-11's enhanced P Mode provides improved performance in demanding applications.

Robust Undercarriage

The undercarriage is designed using larger size class components to provide improved reliability, good over the side lift capacity and long component life.

Large digging force

With the one-touch Power Max. function, digging force is increased for 8.5 seconds of operation.

Faster arm cycle speeds

Two return hoses improve arm cylinder hydraulic flow for faster arm out performance.

Two-mode settings for boom

  • Smooth boom mode provides easy operation for gathering material or scraping down
  • Power boom mode maximizes digging force for more effective excavating

Lifting mode

When the Lifting mode is selected, lifting capacity is increased 7% by raising hydraulic pressure.

Wide spacious cab

Wide spacious cab includes seat with reclining backrest. The seat height and longitudinal inclination are easily adjusted using a pull-up lever. You can set the appropriate operational posture of armrest together with the console. Reclining the seat further enables you to place it into the fully flat state with the headrest attached.

Diesel Exhaust Fluid (DEF) tank

A large tank volume extends operating time before refilling and is installed on the right front platform for easy access.

Working Mode Selection

The PC390LC-11 excavator is equipped with six working modes (P, E, L, B, ATT/P and ATT/E). An enhanced Power Mode provides improved performance in demanding applications. Each mode is designed to match engine speed, pump flow, and system pressure to the application. The PC390LC-11 features an attachment mode (ATT/E) that allows operators to run attachments while in Economy mode.

Engine

Model
Komatsu SAA6D114E-6*
Type
Water-cooled, 4-cycle, direct injection
Aspiration
Komatsu 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

Working Mode Application Advantage
P Power Mode
Maximum production/power
Fast cycle times
E
Economy mode Good cycle times
Better fuel economy
L
Lifting mode Increases hydraulic pressure
B Breaker mode Optimum engine rpm, hydraulic flow
ATT/P
Attachment
Power mode
Optimum engine rpm, hydraulic flow, 2-way
Power mode
ATT/E
Attachment
Economy mode
Optimum engine rpm, hydraulic flow, 2-way
Economy mode

Model
Komatsu SAA6D114E-6*
Type
Water-cooled, 4-cycle, direct injection
Aspiration
Komatsu 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 8.66 psi
Shoes 800 mm 31.5''
Operating Weight: 40359 kg 88,976 lb
Ground Pressure 0.54 kg/cm² 7.67 psi
Shoes 850 mm 33.5"
Operating Weight: 40796 kg 89,940 lb
Ground Pressure 0.49 kg/cm² 6.90 psi

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