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Komatsu Excavators PC390LC-10

 

Komatsu Excavators PC390LC-10

PC390LC-10 Hydraulic Excavator

If you are looking for an excavator with great balance for lifting and a great balance between power and speed for production and fine control for precision work, you've found it. The Komatsu Excavators PC390LC-10 answers all those questions and the answer includes Tier 4 technology that keeps you working during regeneration and can reduce your fuel consumption by up to 10%.

Engine
Model Komatsu SAA6D114E-5*
Type Water-cooled, 4-cycle, direct injection
Aspiration Turbocharged, aftercooled, cooled EGR
Number of cylinders 6
Bore 4.49" 114 mm
Stroke 5.69" 144.5 mm
Piston displacement 540 in³ 8.85 ltr
Horsepower
SAE J1995 : Gross 271 HP 202 kW
ISO 9249/SAE J1349 : Net 257 HP 192 kW
Rated rpm 1950 rpm
Fan drive type Mechanical
Governor All-speed control, electronic.
*EPA Tier 4 Interim and EU Stage 3B emissions certified.
Hydraulics
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 flow 141 U.S. gal/min 535 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 circuits 5,400 psi 380 kgf/cm²/ 37.3 MPa
Travel circuit 5,400 psi 380 kgf/cm² / 37.3 MPa
Swing circuit 4,050 psi 285 kgf/cm²/ 27.9 MPa
Pilot circuit 470 psi 33 kgf/cm² / 3.2 MPa
Hydraulic cylinders:
Number of cylinders Bore x Stroke x Rod Diameter Bore x Stroke x Rod Diameter
Boom / 2 5.5" x 58.3" x 3.9" 140 mm x 1480 mm x 100 mm
Arm / 1 6.3" 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" Arms 5.5" x 50.6" x 3.9" 140 mm x 1285 mm x 100 mm
Bucket / 1 - for 2.54 m 8'4" Arm 5.9" x 50.6" x 4.3" 150 mm x 1285 mm x 110 mm
Drives & Brakes
Steering control Two levers with pedals
Drive method Hydrostatic
Maximum drawbar pull 73,880 lb 329 kN / 33510 kg
Gradeability 35° 70%
Maximum travel speed: (Auto-Shift)
High 3.4 mph 5.5 km/h
Mid 2.7 mph 4.4 km/h
Low 1.9 mph 3.0 km/h
Service brake Hydraulic lock
Parking brake Mechanical disc brake
Swing System
Drive method: Hydrostatic
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 82,313 ft. lbs. 11386 kg•m
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 159.8 U.S. gal 605 ltr
Coolant 9.7 U.S. gal 37 ltr
Engine 9.2 U.S. gal 35.0 ltr
Final drive, each side 2.4 U.S. gal 9.0 ltr
Swing drive 3.6 U.S. gal 13.7 ltr
Hydraulic tank 49.7 U.S. gal 188 ltr
Hydraulic system 96.4 U.S. gal 365 ltr

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.

Operating Weight (approximate)
Shoes 28" 700 mm
Operating Weight 78,255 lb 35496 kg
Ground Pressure 8.31 psi 0.59 kg/cm²
Shoes 31.5'' 800 mm
Operating Weight: 79,093 lb 35876 kg
Ground Pressure 7.40 psi 0.52 kg/cm²
Shoes 33.5" 850 mm
Operating Weight: 79,930 lb 36255 kg
Ground Pressure 7.00 psi 0.50 kg/cm²
Component Weights
Arm including bucket cylinder and linkage:
3185 mm / 10'5" arm assembly 3,882 lb 1761 kg
4020 mm / 13'2" arm assembly 4,383 lb 1988 kg
One piece HD boom including arm cylinder:
6500 mm / 21'3" boom assembly 6,912 lb 3135 kg
Boom cylinders x 2 571 lb 259 kg
Counterweight 15,631 lb 7090 kg
1.96 m³ / 2.56 yd³ bucket - 54" width 3,425 lb 1554 kg

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