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The PC490LC-11 is designed for high-production jobs, offering a balance of size, portability, and durability. Here are some key features:

  • Large high-strength steel castings on the boom, arm, and bucket link for robust construction.
  • Closed-center load-sensing hydraulics that enable precise and fine control.
  • Large displacement high-efficiency pumps to provide optimal attachment flow.
  • A spacious and quiet cab featuring a standard air suspension seat for operator comfort.

Product Features and benefits:

Efficient Hydraulic Pump

Large displacement hydraulic implement pumps deliver high flow output at lower engine RPM, ensuring operation at the most efficient engine speed.

Closed-Center Load-Sensing Hydraulic System

The closed-center load-sensing hydraulic system ensures smooth operation, quick cycle times, and versatile multi-functionality. It also contributes to lower fuel consumption.

Built for Durability

The equipment is meticulously designed for long-term durability, featuring high resistance to bending and torsional stress. Booms and arms are constructed with thick plates of high-tensile-strength steel, designed with large cross-sectional areas.

Cleaner Emissions Technology

Incorporating a heavy-duty aftertreatment system, the excavator adopts a Komatsu Diesel Particulate Filter (KDPF) and selective catalytic reduction (SCR). This system injects the correct amount of diesel exhaust fluid, effectively decomposing nitrogen oxide for cleaner emissions.

Easy Maintenance Access

The excavator facilitates easy access to engine oil check and filter locations, integrated into one side for convenient maintenance.

Advanced Ergonomic Design

The wide and spacious cab includes a heated air suspension seat with a reclining backrest. Seat height and position are easily adjusted using a pull-up lever, and the armrest position is effortlessly controlled with the console.

Information-Rich Interface

An updated, large, high-resolution LCD color monitor provides operators with accurate and smooth work experience. Key machine information is displayed in a user-friendly interface, with additional features like a rearview camera and DEF level gauge.

Rollover Protection

Standard equipment includes a Rollover Protection System (ROPS) cab conforming to ISO 12117-2 standards. It satisfies requirements for Level 1 Operator Protective Guard (OPG) and top guard (ISO 10262).

Multi-Operator Productivity

The excavator supports multi-operator productivity by allowing the setup of an operator identification ID for each user. This information is then used to manage operation data through Komtrax, analyzing the operational status by both operator and machine.

Fuel Consumption Reduction

The auto idle shutdown feature automatically turns off the engine after idling for a set period, effectively reducing unnecessary fuel consumption and exhaust emissions. The shutdown time can be programmed from 5 to 60 minutes.

Designed for Durability (2)

Large heavy-duty revolving frame guards and a swivel guard help protect vital components from damage and debris build-up.

Ease of Maintenance and Serviceability (2)

The excavator provides a convenient and secure work area in front of the engine, with a new step for easier access when filling the AdBlue/DEF tank.

Product Specifications for PC490LC-11:

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 x stroke: 4.92 x 5.91 in
  • Piston displacement: 674 in³
  • Horsepower:
    • SAE J1995 – Gross: 362 HP
    • ISO 9249/SAE J1349 – Net: 359 HP
  • Rated rpm: 1,900 rpm
  • Governor: All-speed control, electronic.
  • Fan drive method for radiator cooling: Hydraulic
  • EPA Tier 4 Final emissions certified

Hydraulics:

  • Type: HydrauMind (Hydraulic Mechanical Intelligence) system, closed-center system with load sensing valve and pressure compensated valves, 6 selectable working modes
  • Main pump:
    • Pumps for: Boom, arm, bucket, swing, and travel circuits
    • Type: Variable displacement axial piston type
    • Maximum flow: 206 US gpm
  • 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
    • Travel circuit: 5,400 psi
    • Swing circuit: 4,050 psi
    • Pilot circuit: 470 psi
  • Hydraulic cylinders:
    • Boom / 2: 6.3 x 61.8 x 4.3 in
    • Arm / 1: 7.3 x 71.7 x 4.7 in
    • Bucket / 1: 6.3 x 50 x 4.3 in

Drives and Brakes:

  • Steering control: Two levers with pedals
  • Drive method: Hydrostatic
  • Maximum drawbar pull: 73,880 lbs.
  • Gradeability: 70%
  • Maximum travel speed (Auto-Shift):
    • High: 3.4 mph
    • Mid: 2.6 mph
    • Low: 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: 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 & Lubricant Capacity (Refilling):

  • Fuel tank: 172 US gal
  • Coolant: 12.4 US gal
  • Engine: 10.0 US gal
  • Final drive, each side: 2.9 US gal
  • Swing drive: 5.3 US gal
  • Hydraulic tank: 65.5 US gal
  • Diesel Exhaust Fluid (DEF) tank: 10.3 US gal

Operating Weight (Approximate): Fixed Gauge:

  • Shoes: 28 in
    • Operating Weight: 105,670 lbs
    • Ground Pressure: 10.38 psi
  • Shoes: 31.5 in
    • Operating Weight: 106,770 lbs
    • Ground Pressure: 9.20 psi
  • Shoes: 35.5 in
    • Operating Weight: 107,850 lbs
    • Ground Pressure: 8.32 psi

Variable Gauge:

  • Shoes: 28 in
    • Operating Weight: 108,040 lbs
    • Ground Pressure: 10.61 psi
  • Shoes: 31.5 in
    • Operating Weight: 109,140 lbs
    • Ground Pressure: 9.40 psi
  • Shoes: 35.5 in
    • Operating Weight: 110,220 lbs
    • Ground Pressure: 8.50 psi

Further information on this machine can be viewed by visiting this link https://www.komatsu.com/products/excavators/large-excavators/pc490lc-11

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DISCLAIMER: The information that has been provided in this article is sourced from https://www.komatsu.com. The author does not assume any responsibility or liability for the accuracy, completeness, or usefulness of the information provided. The author shall not be held liable for any loss or damage resulting from the use of this content. For further information please contact the manufacturer directly.