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Komatsu Excavators PC490LC-11

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.
Fixed Gauge
Shoes 700 mm 28"
Operating Weight 47930 kg 105,670 lb
Ground Pressure 0.73 kg/cm² 10.38 psi
Shoes 800 mm 31.5''
Operating Weight: 48430 kg 106,770 lb
Ground Pressure 0.65 kg/cm² 9.20 psi
Shoes 900 mm 35.5"
Operating Weight: 48920 kg 107,850 lb
Ground Pressure 0.58 kg/cm² 8.32 psi
Variable Gauge
Shoes 700 mm 28"
Operating Weight 49005 kg 108,040 lb
Ground Pressure 0.75 kg/cm² 10.61 psi
Shoes 800 mm 31.5''
Operating Weight: 49505 kg 109,140 lb
Ground Pressure 0.67 kg/cm² 9.40 psi
Shoes 900 mm 35.5"
Operating Weight: 49995 kg 110,220 lb
Ground Pressure 0.60 kg/cm² 8.50 psi

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