Komatsu WA800-3 MINING WHEEL LOADERS
Product Feature
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.
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.
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.
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.
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.
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.
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.
Large Dumping Clearance
The WA800-3 was designed with ample dumping clearance for dump truck matching.
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.
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.
Product Parameter
| 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 |
| Service brakes | Hydraulically actuated, wet disc brakes actuate on four wheels | |
| Parking brake | Dry disc brake | |
| Secondary brake | Parking brake is commonly used |
| Model | Komatsu SAA12V140E-3 | |
| Type | Water-cooled, 4 cycle | |
| Aspiration | Turbocharged, air-to-air aftercooled | |
| Number of cylinders | 12 | |
| Bore x stroke | 5.51'' x 6.50'' | 140 mm x 165 mm |
| Piston displacement | 1,860 in³ | 30.48 ltr |
| Governor | all-speed, electronic | |
| Flywheel horsepower: | ||
| SAE J1995 - Gross | 853 HP | 636 kW |
| ISO 9249/SAE J1349 - Net | 808 PS | 603 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. |
| Steering system: | ||
| Hydraulic pump | Piston pump | |
| Capacity / at rated rpm | 81 U.S. gal/min | 307 ltr/min |
| Relief valve setting | 4,550 psi | 31.4 MPa 320 kgf/cm² |
| Hydraulic cylinders: | ||
| Type | Double-acting, piston type | |
| Number of cylinders | 2 | |
| Bore x stroke | 6.3" x 19.8" | 160 mm x 503 mm |
| Loader control: | ||
| Hydraulic pump | Piston pump | |
| Capacity / at rated rpm | 107 U.S. gal/min | 405 ltr/min |
| Relief valve setting | 4,550 psi | 31.4 MPa 320 kgf/cm² |
| Hydraulic cylinders: | ||
| Type | Double-acting, piston type | |
| Number of cylinders—bore x stroke: | ||
| Boom cylinder - 2 | 10.2" x 53.9" | 260 mm x 1368 mm |
| Bucket cylinder - 1 | 11.8" 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 |
|
The cab is mounted on viscous damping mounts and is well insulated. |
| Cooling system | 89.0 U.S. gal | 337 ltr |
| Fuel tank | 410.8 U.S. gal | 1555 ltr |
| Engine | 34.3 U.S. gal | 130 ltr |
| Hydraulic system | 191.5 U.S. gal | 725 ltr |
| Axle (each front and rear) | 95.1 U.S. gal | 360 ltr |
| Torque converter and transmission | 37.0 U.S. gal | 140 ltr |
| Type | Articulated type, full-hydraulic power steering | |
| Steering angle | 40° each direction | |
| Minimum turning radius at the center of outside tire | 30'2" | 9200 mm |
| Torque converter - Type | 3-element, single-stage, single-phase | |
| Transmission - Type | Full-powershift, planetary type | |
| Travel Speed* | ||
| 1st Forward | 4.3 mph | 7.0 km/h |
| 1st Reverse | 4.4 mph | 7.1 km/h |
| 2nd Forward | 7.6 mph | 12.3 km/h |
| 2nd Reverse | 7.7 mph | 12.4 km/h |
| 3rd Forward | 17.4 mph | 28.0 km/h |
| 3rd Reverse | 17.6 mph | 28.3 km/h |
| *Measured with 45/65-45, 46PR (L-5) |
