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