Komatsu PC800LC-8 MH

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Eco-gauge that Assists Energy-saving Operations

Equipped with Ecogauge for environment friendly energy-saving operations. By operating in the green range, CO2 emission and fuel consumption can be reduced.

Working Modes Selectable

Power and Economy modes have been improved.
P mode – Power or work priority mode has low fuel consumption, but fast equipment speed and maximum power.
E mode – Economy or fuel saving mode further reduces fuel consumption, but maintains P-mode work equipment speed for light-duty applications.
You can easily select Power or Economy modes using the monitor panel.

Two-mode Setting for Boom

Smooth mode provides easy operation for gathering blasted rock and scraping operations. When maximum digging force is needed, switch to Power mode for more effective excavating.

Shockless Boom Control

The PC800LC-8 MH boom circuit features a shockless valve (double-check slow return valve) to automatically minimize the amount of vibration present when operating the boom. Operator fatigue and bucket spillage, caused by vibration, is reduced.

Large Digging Force

With the addition of the one-touch Power Max. function, digging force has been increased. (8 seconds of operation)

Maximum arm crowd force (ISO):

237 kN (24.2 t) → 260 kN (26.5 t) 9.7 % UP (with Power Max.)

Maximum bucket digging force (ISO):

296 kN (30.2 t) → 324 kN (33.0 t) 9.7 % UP (with Power Max.)

Work Equipment Speed Increased

Work equipment speed becomes faster with the arm quick return circuit. This returns a portion of oil directly to the hydraulic tank during arm dump to reduce hydraulic loss and increase speed.

The Super Digger

Using two arm cylinders, the arm digging force is increased by 19%, providing additional breakout in hard digging applications. The Super Digger uses a standard length front, so there is no reduction in working range.

High-Pressure In-line Filtration

An in-line filter in the outlet port of each main hydraulic pump provides an extra level of hydraulic system protection, reducing failures caused by contamination.

Wide Newly-designed Cab

The newly designed wide spacious cab includes a highback, heated seat with a reclining backrest. The seat height and longitudinal inclination are easily adjusted using a pullup lever. You can set the appropriate operational position of the armrest together with the console. Reclining the seat enables you to place it into a fully flat position with the headrest attached.

Multi-position Controls

The multi-position, Propor tional Pressure Control (PPC) levers allow the operator to work in comfort while maintaining precise control. A doubleslide mechanism allows the seat and control levers to move together or inde pen dently, allowing the operator to position the controls for maximum productivity and comfort.

Large Multi-Lingual LCD Monitor

A large user-friendly color monitor enables accurate and smooth work. Improved screen visibility is achieved by using a TFT liquid crystal display that can be easily read at various angles and lighting conditions. All switches are simple and easy to operate. Industry-first function keys facilitate multi-function operations. The monitor displays data in 12 languages to globally support operators around the world.

Swing Priority Mode

Allows the operator to use the same easy motion for 180° loading as for 90° loading operations. By altering the oil flow, this setting allows you to select either boom or swing as the priority for increased production.

Rear-view Monitoring System standard

On the large LCD color monitor, the operator can access and view one standard camera that will display areas directly behind the machine. An optional 2-camera system is available.


EPA Tier 3 and EU stage 3A emission certified.    
Model   Komatsu SAA6D140E-5
Type   Water-cooled, 4-cycle, direct injection
Aspiration   Turbocharged, aftercooled, cooled EGR
Number of cylinders   6
Bore 5.51" 140 mm
Stroke 6.50" 165 mm
Piston displacement 930 in³ 15.24 ltr
Governor   All-speed control, electronic
SAE J1995 (Gross) 496 HP 370 kW
ISO9249 / SAE J1349 (Net) 487 HP 363 kW
Hydraulic fan at maximum speed (Net) 454 HP 338 kW
Rated rpm   1800 rpm
Fan drive type   Hydraulic
Type   EOLSS (Electronic Open-center Load Sensing System)
Number of selectable working modes   3
Main pump:    
Type   Two (2) variable capacity piston pumps
Pumps for   Boom, arm, bucket, swing, and travel circuits
Maximum flow: 2 x 130.5 U.S. gal/min 2 x 494 ltr/min
Fan drive pump   Variable capacity piston type
Hydraulic motors:    
Travel   2 x axial piston motors with parking brake
Swing   2 x axial piston motors with swing holding brake
Relief valve setting:    
Implement circuits 4,550 psi 31.4 MPa
320 kg/cm²    
Travel circuit 4,980 psi 34.3 MPa
350 kg/cm²    
Swing circuit 4,120 psi 28.4 MPa
290 kg/cm²    
Heavy lift circuit 4,980 psi 34.3 MPa
350 kg/cm²    
Pilot circuit 430 psi 2.9 MPa
30 kg/cm²    
Hydraulic cylinders / Number of cylinders: bore x stroke x rod diameter: bore x stroke x rod diameter:
Boom / 2 8" x 68" x 5" 202 mm x 1727 mm x 127 mm
Arm / 1 (55' front) 9" x 72" x 6" 229 mm x 1829 mm x 152 mm
Arm / 1 (68' front) 8.5" x 72" x 6" 216 mm x 1829 mm x 152 mm
Drives & Brakes    
Steering control   Two levers with pedals
Drive method   Fully hydrostatic
Travel motor   Axial piston motor, in-shoe design
Reduction system   Planetary double reduction
Maximum drawbar pull 125,660 lb 559 kN 57000 kg
Gradeability   70%
Maximum travel speed:    
High 2.6 mph 4.2 km/h
Low 1.7 mph 2.8 km/h
Service brake   Hydraulic lock
Parking brake   Oil disc brake
Swing System    
Drive method   Hydraulic motors (2)
Swing reduction   Planetary gear
Swing circle lubrication   Grease-bathed
Swing lock   Oil disc brake
Swing speed   6.8 rpm
Swing torque 209,461 ft. lbs. 28968 kg•m
Center frame   H-leg frame
Track frame   Box-section
Track type   Sealed
Track adjuster   Hydraulic
No. of shoes   51 each side
No. of carrier rollers   3 each side
No. of track rollers   9 each side
Coolant and Lubricant Capacity (refilling)    
Fuel tank 258.9 U.S. gal 980 ltr
Radiator 26.4 U.S. gal 100 ltr
Engine 15.3 U.S. gal 58 ltr
Final drive, each side 5.3 U.S. gal 20 ltr
Swing drive 2 x 6.5 U.S. gal 2 x 24.5 ltr
Hydraulic tank 116.2 U.S. gal 440 ltr
Operating Weight (approximate)    
Operating weight w/o Grapple: 16.8 m / 87796 kg 55' / 193,555 lb
Operating weight w/o Grapple: 20.7 m / 89339 kg 68' / 196,955 lb