Komatsu PC490LC-10MH LARGE EXCAVATORS
Product Feature
Large Digging Force
The PC490LC-10 MH is equipped with the Power Max system. This function temporarily increases digging force for 8.5 seconds of operation.
Maximum arm crowd force (ISO):
200 kN (20.4 t) → 214 kN (21.8 t) 7 % UP
(with Power Max.)
Maximum bucket digging force (ISO):
256 kN (26.1 t) → 275 kN (28.0 t) 7 % UP
(with Power Max.)
Efficient Hydraulic System
The PC490LC-10 MH uses a Closed Center Load Sensing (CLSS) hydraulic system that improves fuel efficiency and provides quick response to the operator's demands. The PC490LC-10 MH also introduces new technology to enhance the engine and hydraulic pump control. This total control system matches the engine and hydraulics at the most efficient point under any load condition. There have also been improvements in the main valve and hydraulic circuit to reduce hydraulic loss, resulting in higher efficiency and lower fuel consumption.
Pumps
Pump displacement has been increased, providing increased flow output as well as operation at the most efficient engine speed.
Idling Caution
To reduce unnecessary fuel consumption, an idling caution is displayed on the monitor if the engine idles for 5 minutes or more.
Working Mode Selection
The PC490LC-10 MH excavator is equipped with six working modes (P, E, L, B, ATT/P and ATT/E). Each mode is designed to match engine speed, pump flow, and system pressure to the application. The PC490LC-10 MH features a new mode (ATT/E) which allows operators to run attachments while in Economy mode.
Lifting Mode
When the Lifting mode is selected, the lift capacity is increased 7% by raising the hydraulic pressure.
Eco-Gauge Assists with Energy Saving Operations
The Eco-gauge and new fuel consumption gauge are viewed on the right side of the color monitor and assist the operator in maintaining low fuel consumption and environment friendly operation.
Hydraulic Variable Speed Fan
The electronic control system sets the revolution speed of the cooling fan according to the coolant, hydraulic oil, and ambient temperature; effectively uses the engine output to reduce wasteful fuel consumption; and reduces noise during low-speed fan revolution.
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.
Two Boom Mode Settings
Smooth boom mode provides easy operation for gathering blasted rock or when scraping down. Power boom mode maximizes digging force for more effective excavating.
Newly Designed Wide Spacious Cab
The newly designed wide spacious cab features a high back, fully adjustable seat with a reclining backrest. The console and seat have an integrated design so that they move together and provide additional comfort for the operator. The new higher capacity operator seat has been enhanced to provide more comfort.
Large High Resolution LCD Monitor Panel
A new large, user-friendly, high resolution LCD color monitor enables accurate and smooth work. Screen visibility and resolution are further improved compared to the previous LCD monitor panel. The switches and function keys are easy to operate and provide simple navigation through the monitor screens.
Data is displayed in 25 languages to support operators around the world.
Operational "ECO" Guidance
The monitor panel provides operational advice to the operator to help improve machine efficiency and lower fuel consumption. The operator can access the ECO guidance menu to check the Operation Records, Eco Guidance Records, and Average Fuel Consumption Logs.
Improved Attachment Control
The PC490LC-10 MH is capable of storing up to ten different attachments in the new monitor panel. The name of each attachment can be changed for better tool management. Hydraulic flow rates can be easily adjusted for one-way and two-way flow attachments.
KDPF Regeneration Notification
The LCD color monitor panel provides the operator with the status of the KDPF regeneration, without interfering with daily operation. When the machine initiates active regeneration an icon will appear to notify the operator.
Abnormalities Display with Code
When an abnormality occurs an error code is displayed on the monitor. When an important code is displayed, a caution lamp blinks and warning buzzer sounds to alert the operator to take action. The monitor also stores a record of abnormalities for more effective troubleshooting.
Advanced Monitoring System
The monitor provides advanced monitoring diagnostics to assist with troubleshooting and reduce costly downtime.
Maintenance Tracking
When the machine approaches or exceeds the oil and filter replacement interval, the monitor panel will display lights to inform the operator.
Rear-view Monitoring System (standard)
On the large LCD color monitor the operator can view the image from one camera that will display areas directly behind the machine. An optional 2-camera system is available.
Specifications
Engine
| Model | Komatsu SAA6D125E-6-A* | |
| Type | Water-cooled, 4-cycle, direct injection | |
| Aspiration | Turbocharged, aftercooled, cooled EGR | |
| Number of cylinders | 6 | |
| Bore | 4.92" | 125 mm |
| Stroke | 5.91" | 150 mm |
| Piston displacement | 674 in³ | 11.04 ltr |
| Horsepower | ||
| SAE J1995 : Gross | 362 HP | 270 kW |
| ISO 9249/SAE J1349 : Net | 359 HP | 268 kW |
| Rated rpm | 1900 rpm | |
| Fan drive type | Hydraulic | |
| 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
Drives & Brakes
| Steering control | Two levers with pedals | |
| Drive method | Hydrostatic | |
| Maximum drawbar pull | 73,987 lb | 329 kN / 33560 kg |
| Gradeability | 35° | 70% |
| Maximum travel speed: (Auto-Shift) | ||
| High | 3.4 mph | 5.5 km/h |
| Mid | 2.6 mph | 4.2 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 | 9.1 rpm | |
| Swing torque | 97,024 ft. lbs. | 13414 kg•m |
Undercarriage
| Center frame | X-frame | |
| Track frame | Box-section | |
| Seal of track | Sealed track | |
| Track adjuster | Hydraulic | |
| Number of shoes | 49 each side | |
| Number of carrier rollers | 4 each side | |
| Number of track rollers | 8 each side |
Coolant and Lubricant Capacity (refilling)
| Fuel tank | 172 U.S. gal | 650 ltr |
| Coolant | 11.6 U.S. gal | 44 ltr |
| Engine | 10.0 U.S. gal | 38.0 ltr |
| Final drive, each side | 2.9 U.S. gal | 11.0 ltr |
| Swing drive | 5.3 U.S. gal | 20 ltr |
| Hydraulic tank | 65.5 U.S. gal | 248 ltr |
| Hydraulic system | 124.7 U.S. gal | 472 ltr |
Operating Weight (approximate)
Operating weight without work tool (approximate)
Operating weight includes KO2US55 2-piece 16.8 m / 55' front,
counterweight for MH 12317 kg / 27,450 lb, widen carbody,
78" cab riser, 25kw generator, rated capacities of lubricants,
coolant, full fuel tank, operator and standard equipment.
Product Parameter
| Model | Komatsu SAA6D125E-6-A* | |
| Type | Water-cooled, 4-cycle, direct injection | |
| Aspiration | Turbocharged, aftercooled, cooled EGR | |
| Number of cylinders | 6 | |
| Bore | 4.92" | 125 mm |
| Stroke | 5.91" | 150 mm |
| Piston displacement | 674 in³ | 11.04 ltr |
| Horsepower | ||
| SAE J1995 : Gross | 362 HP | 270 kW |
| ISO 9249/SAE J1349 : Net | 359 HP | 268 kW |
| Rated rpm | 1900 rpm | |
| Fan drive type | Hydraulic | |
| Governor | All-speed control, electronic. | |
| *EPA Tier 4 Interim and EU stage 3B emissions certified |
| Number of selectable working modes | 6 | |
| Main pump: | ||
| Type | Variable displacement piston type | |
| Pumps for | Boom, arm, bucket, swing, and travel circuits | |
| Maximum flow | 184 U.S. gal/min | 695 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 | 4,055 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 | 7" x 59" x 5" | 177.8 mm x 1499 mm x 127 mm |
| Arm / 1 | 7.5" x 78" x 5" | 190.5 mm x 1981 mm x 127 mm |
| Auxiliary pump for generator: | ||
| Maximum flow | 36.7 gal/min | 139 ltr/min |
| Maximum pressure | 3,500 psi | 24.2 MPa 246 kg/cm² |
| Mounting flange | SAE-B, 2 bolt | |
| Drive spline | 15T-16/32DP |
| Steering control | Two levers with pedals | |
| Drive method | Hydrostatic | |
| Maximum drawbar pull | 73,987 lb | 329 kN / 33560 kg |
| Gradeability | 35° | 70% |
| Maximum travel speed: (Auto-Shift) | ||
| High | 3.4 mph | 5.5 km/h |
| Mid | 2.6 mph | 4.2 km/h |
| Low | 1.9 mph | 3.0 km/h |
| Service brake | Hydraulic lock | |
| Parking brake | Mechanical disc brake |
| 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 | 9.1 rpm | |
| Swing torque | 97,024 ft. lbs. | 13414 kg•m |
| Center frame | X-frame | |
| Track frame | Box-section | |
| Seal of track | Sealed track | |
| Track adjuster | Hydraulic | |
| Number of shoes | 49 each side | |
| Number of carrier rollers | 4 each side | |
| Number of track rollers | 8 each side |
| Fuel tank | 172 U.S. gal | 650 ltr |
| Coolant | 11.6 U.S. gal | 44 ltr |
| Engine | 10.0 U.S. gal | 38.0 ltr |
| Final drive, each side | 2.9 U.S. gal | 11.0 ltr |
| Swing drive | 5.3 U.S. gal | 20 ltr |
| Hydraulic tank | 65.5 U.S. gal | 248 ltr |
| Hydraulic system | 124.7 U.S. gal | 472 ltr |
| Triple-Grouser Shoes | 28" | 700 mm |
| Operating Weight | 126,530 lb | 57410 kg |
| Ground Pressure | 13.4 psi | 0.94 kg/cm² |
| Triple-Grouser Shoes | 31.5'' | 800 mm |
| Operating Weight: | 127,630 lb | 57910 kg |
| Ground Pressure | 11.8 psi | 0.83 kg/cm² |
| Triple-Grouser Shoes | 35.5" | 900 mm |
| Operating Weight: | 128,710 lb | 58400 kg |
| Ground Pressure | 10.6 psi | 0.74 kg/cm² |
| For KOUS54 3-piece 16.5 m 54' front, add weight 105 kg 230 lb |
