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Komatsu Excavators PC490LC-11
PC490LC-11 Hydraulic Excavator
The PC490LC-11 with an operating weight of 105,670 lbs (47,930 kg) to 110,220 lbs (49,995 kg), is a large performance oriented excavator with reinforced undercarriage for high lift capacity, lateral stability and added durability. The PC490LC-11 leverages Komatsu engine technology to provide a productive, dependable and efficient Tier 4 Final emissions certified machine that does not interfere with daily operation. An enhanced Power Mode provides improved hydraulic flow, reduced cycle time and better productivity than the previous model it replaces. The PC490LC-11 is ideally sized for high production earthmoving applications while be easily transportable.
Engine
Model
Komatsu SAA6D125E-7*
Type
Water-cooled, 4-cycle, direct injection
Aspiration
Komatsu Variable Geometry Turbocharger with air-to-air aftercooled EGR
Number of cylinders
6
Bore
125 mm
4.92"
Stroke
150 mm
5.91"
Piston displacement
11.04 ltr
674 in³
Horsepower
SAE J1995 : Gross
270 kW
362 HP
ISO 9249/SAE J1349 : Net
268 kW
359 HP
Rated rpm
1900 rpm
Governor
All-speed control, electronic.
Fan drive method for radiator cooling
Hydraulic
*EPA Tier 4 Final emissions certified
Hydraulic
Type: HydrauMind (Hydraulic Mechanical Intelligence) system, closed-center system with load sensing valve and pressure compensated valves, 6 selectable working modes
Main pumps:
Pumps for
Boom, arm, bucket, swing, and travel circuits
Type
Variable displacement axial piston type
Maximum flow
780 ltr/min
206 U.S. gal/min
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
380 kgf/cm²/ 37.3 MPa
5,400 psi
Travel circuit
380 kgf/cm² / 37.3 MPa
5,400 psi
Swing circuit
285 kgf/cm²/ 27.9 MPa
4,050 psi
Pilot circuit
33 kgf/cm² / 3.2 MPa
470 psi
Hydraulic cylinders:
Number of cylinders
Bore x Stroke x Rod Diameter
Bore x Stroke x Rod Diameter
Boom / 2
160 mm x 1570 mm x 110 mm
6.3" x 61.8" x 4.3"
Arm / 1
185 mm x 1820 mm x 120 mm
7.3" x 71.7" x 4.7"
Bucket / 1
160 mm x 1270 mm x 110 mm
6.3" x 50" x 4.3"
Drives & Brakes
Steering control
Two levers with pedals
Drive method
Hydrostatic
Maximum drawbar pull
329 kN / 33510 kg
73,880 lb
Gradeability
35°
70%
Maximum travel speed: (Auto-Shift):
High
5.5 km/h
3.4 mph
Mid
4.2 km/h
2.6 mph
Low
3.0 km/h
1.9 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
9.0 rpm
Swing torque
13414 kg•m
97,024 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
650 ltr
172 U.S. gal
Coolant
47 ltr
12.4 U.S. gal
Engine
38 ltr
10.0 U.S. gal
Final drive, each side
11 ltr
2.9 U.S. gal
Swing drive
20 ltr
5.3 U.S. gal
Hydraulic tank
248 ltr
65.5 U.S. gal
Diesel Exhaust Fluid (DEF) tank
39 ltr
10.3 U.S. gal
Operating Weight (approximate)
Operating weight includes 7060 mm 23'2" one-piece HD boom, 3380 mm 11'1" arm, SAE heaped 2.25 m3 2.94 yd3 bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.
