Komatsu WA800-3 Wheel Loader

Komatsu WA800-3 Wheel Loader

Operating Weight
Rated power 853 HP 636 kW
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Durable Buckets

Komatsu buckets are manufactured using high-tensile strength steel with replaceable welded wear plates for extended bucket life. Additional strength has been added to the bucket bottom corners, side edges, and spill guard ends for increased durability.

 

Bucket capacities:

14.4 yd³ / 11.0 m³ Standard boom

16.1 yd³ / 12.3 m³ Standard boom

10.0 m³ / 13.1 yd³ High-lift boom

18.3 yd³ / 14.0 m³  Short boom


Dual-Mode Active Working System

The machine is equipped with a two mode active working system. This system provides the most efficient hydraulic flow for your operation. The active working switch has two modes: Powerful Loading or Normal Loading.

WA900_DE1L9787  

Large Dumping Clearance

The WA800-3 was designed with ample dumping clearance for dump truck matching.

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High Breakout Force

Komatsu wheel loaders have high-tensile steel Z-bar loader linkages for maximum rigidity and maximum breakout force. Sealed loader linkage pins extend greasing intervals.

152,120 lb / 69000 kg Breakout force

14.4 yd³ / 11.0 m³ Excavating spade nose bucket with teeth


Excellent Stability

The WA800-3 has the widest tread in its class 11'0" / 3,350 mm and a long 17'11'' / 5,450 mm wheelbase, for maximum machine stability.

 


Static tipping load

(with 45/65-45, 46PR (L-5) tires / bucket 14.4 yd³/ 11.0 m³)

134,680 lb / 61090 kg  Straight

118,480 lb / 53740 kg  40° full turn


Adjustment-Free Braking System

Wet multi-disc service brakes and fully hydraulic braking system mean lower maintenance costs and higher reliability. Wet disc brakes are fully sealed, helping keep contaminants out, reducing wear and maintenance. Brakes are adjustment-free, meaning even lower maintenance. Reliability is designed into the braking system by the use of two independent hydraulic circuits. This provides hydraulic backup should one of the circuits fail. Fully hydraulic brakes mean no air system to bleed, or the condensation of water in the system that can lead to contamination, corrosion, and freezing.

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High-rigidity Frames and Loader Linkage

The front and rear frames and the loader linkage have more torsional rigidity to secure resistance against increased stress. Frame and loader linkage are designed to accommodate actual working loads, and simulated computer testing proves its strength.

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Simple Checks - Easy Maintenance

The main monitor and the maintenance monitor (EDIMOS II) are neatly arranged for a quick, clear reading of machine functions. The main monitor also has a diagnostic function.

WA900_DE1L9762  

Rear Access Stairs

For the purpose of boarding and exiting the machine, rear access stairs with handrail are provided. The step width clearance and the step angle have been designed for easy entry and exit. A step light is provided for night boarding.

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Advanced Joystick Steering System

AJSS is a feedback steering system which has been incorporated to allow steering and forward and reverse selection to be controlled by wrist and finger control. With the feedback function, the machine steering angle is exactly the same angle as the lever tilt angle.

WA600_AJSS  

Engine

Model
Komatsu SAA12V140E-3
Type
Water-cooled, 4 cycle
Aspiration
Turbocharged, air-to-air aftercooled
Number of cylinders
12
Bore x stroke5.51'' x 6.50''140 mm x 165 mm
Piston displacement1,860 in³30.48 ltr
Governor
all-speed, electronic
Flywheel horsepower

SAE J1995 - Gross853 HP636 kW
ISO 9249/SAE J1349 - Net808 PS603 kW
Rated rpm
2000 rpm
Fan drive method for radiator cooling
Mechanical
Fuel system
Direct injection
Lubrication system

Method
Gear pump, force-lubrication
Filter
Full-flow and bypass combined
Air cleaner
Dry type with automatic dust ejector and pre-cleaner, cyclopac with vacuator
EPA Tier 2 emissions certified.

Transmission

Torque converter - Type
3-element, single-stage, single-phase
Transmission - Type
Full-powershift, planetary type
Travel Speed*

1st Forward4.3 mph7.0 km/h
1st Reverse4.4  mph7.1 km/h
2nd Forward7.6 mph12.3 km/h
2nd Reverse7.7 mph12.4 km/h
3rd Forward17.4 mph28.0 km/h
3rd Reverse17.6 mph28.3 km/h
*Measured with 45/65-45, 46PR (L-5)

Axles and Final Drives

Drive system
Four-wheel drive
Front
Fixed, full-floating
Rear
Center-pin support, full-floating, 22° total oscillation
Reduction gear
Spiral bevel gear
Differential gear
Straight bevel gear
Final reduction gear
Planetary gear, single reduction, oil bath

Brakes

Service brakes
Hydraulically actuated, wet disc brakes actuate on four wheels
Parking brake
Dry disc brake
Secondary brake
Parking brake is commonly used

Steering System

Type
Articulated type, full-hydraulic power steering
Steering angle
40° each direction
Minimum turning radius at the center of outside tire30'2"9200 mm

Hydraulic System

Steering system:

Hydraulic pump
Piston pump
Capacity / at rated rpm81 U.S. gal/min307 ltr/min
Relief valve setting4,550 psi31.4 MPa 320 kgf/cm²
Hydraulic cylinders:

Type
Double-acting, piston type
Number of cylinders
2
Bore x stroke6.3" x 19.8"160 mm x 503 mm
Loader control:

Hydraulic pump
Piston pump
Capacity / at rated rpm107 U.S. gal/min405 ltr/min
Relief valve setting4,550 psi31.4 MPa
320 kgf/cm²
Hydraulic cylinders:

Type
Double-acting, piston type
Number of cylinders—bore x stroke:

Boom cylinder - 210.2" x 53.9"260 mm x 1368 mm
Bucket cylinder - 111.8" x 35.7"300 mm x 906 mm
Control valve
Spool type
Control positions:

Boom
Raise, hold, lower, and float
Bucket
Tilt-back, hold, and dump
Hydraulic cycle time (rated load in bucket):

Raise
11.2 sec
Dump
2.0 sec
Lower (Empty)
4.8 sec

ROPS and Cab

The cab is mounted on viscous damping mounts and is well insulated.

Service Refill Capacities

Cooling system89.0 U.S. gal337 ltr
Fuel tank410.8 U.S. gal1555 ltr
Engine34.3 U.S. gal130 ltr
Hydraulic system191.5 U.S. gal725 ltr
Axle (each front and rear)95.1 U.S. gal360 ltr
Torque converter and transmission37.0 U.S. gal140 ltr

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