Komatsu PC490LC-11 LARGE EXCAVATORS
Product Feature
New Tier 4 Final Engine
The Komatsu SAA6D125E-7 engine is EPA Tier 4 Final emissions certified and provides exceptional performance while reducing fuel consumption. Based on Komatsu proprietary technologies developed over many years, this new diesel engine reduces nitrogen oxides (NOx) by more than 80% when compared to Tier 4 interim levels. Through the in-house development and production of engines, electronics, and hydraulic components, Komatsu has achieved great advancements in technology, providing high levels of performance and efficiency in virtually all applications.
Heavy-duty aftertreatment system
This new system combines a Komatsu Diesel Particulate Filter (KDPF) and Selective Catalytic Reduction (SCR). The SCR NOx reduction system injects the correct amount of Diesel Exhaust Fluid (DEF) at the proper rate, thereby decomposing NOx into non-toxic water vapor (H2O) and nitrogen gas (N2).
Komatsu Auto Idle Shutdown
Komatsu auto idle shutdown automatically shuts the engine down after idling for a set period of time to reduce unnecessary fuel consumption and exhaust emissions. The amount of time before the engine is shutdown can be easily programmed from 5 to 60 minutes.
Enhanced Productivity
The PC490LC-11's enhanced P Mode provides more
hydraulic flow and increases productivity.
Productivity
Up to 13% increase
(compared to the PC490LC-10 in standard P Mode)
Hydraulic Variable Speed Fan
The electronic control system sets the rotation speed of the cooling fan according to the coolant, hydraulic oil, and ambient temperatures; effectively uses the engine output to reduce wasteful fuel consumption; and reduces noise during low-speed fan operation.
Variable Track Gauge (option)
Lateral stability is significantly increased when operating with the gauge extended (compared to fixed gauge). With track frames retracted, overall width complies with many local transportation regulations.
Large Displacement High Efficiency Pump
Large displacement hydraulic implement pumps provide high flow output at lower engine RPM as well as operation at the most efficient engine speed.
High Rigidity Work Equipment
Booms and arms are constructed with thick plates of high tensile strength steel. In addition, these structures are designed with large cross sectional areas and large one piece castings in the boom foot, the boom tip, and the arm tip. The result is work equipment that exhibits long term durability and high resistance to bending and torsional stress. A standard HD boom design provides increased strength and reliability.
Wide spacious cab
The wide spacious cab includes a heated air suspension seat with reclining backrest. The seat height and position are easily adjusted using a pull-up lever. The armrest position is easily adjusted together with the console. Reclining the seat further enables it to be fully laid back with the headrest attached.
New Monitor Panel Interface Design
An updated large high resolution LCD color monitor enables accurate and smooth work. The interface has been redesigned to display key machine information in a new user friendly interface. A rear view camera and an DEF level gauge display have been added to the default main screen. The interface has a function that enables the main screen mode to be switched, thus enabling the optimum screen information for the particular work situation to be displayed.
Centralized engine check points
Locations of the engine oil check and filters are integrated into one side to allow easy maintenance and service.
Battery disconnect switch
A standard battery disconnect switch allows a technician to disconnect the power supply and lock out before servicing the machine.
Long-life oils, filters
High performance filters are used in the
hydraulic circuit and engine. By increasing
the oil and filter replacement intervals,
maintenance costs can be significantly
reduced.
Engine oil & Engine oil filter - every 500 hours
Hydraulic oil - every 5000 hours
Hydraulic oil filter - every 1000 hours
Large capacity air cleaner
Large capacity air cleaner is comparable to that of larger machines. The larger air cleaner can extend air cleaner life during long-term operation and helps prevent early clogging, and resulting power loss. A reliable seal design is used for reliability.
Diesel Exhaust Fluid tank
A large tank volume extends operating time before refilling and is installed on the right front stairway for ease of access.
ROPS Cab (ISO 12117-2)
The machine is equipped with a ROPS cab that conforms to ISO 12117-2 for excavators as standard equipment. It also satisfies the requirements for Level 1 Operator Protective Guard (OPG) and top guard (ISO 10262).
Product Parameter
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 | |
|
Main pump: | ||
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" |
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 |
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. |
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 | 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 |
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 |