Komatsu PC390LC-11 LARGE EXCAVATORS
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 |
