Purpose-built for mining and quarry
Load more by using 19-yard buckets in select applications with this pit wheel loader. Designed for performance and operator comfort, the WA900-8 features an upgraded operator seat and can load 70- to 150-ton haul trucks to help get more done at your mine.
- Up to 17% more fuel efficiency
- Up to 9% more productivity
- 5% increase in net horsepower
Note: *all comparisons and claims of improved performance made herein are made with respect to the prior Komatsu model unless otherwise specifically stated. Materials and specifications are subject to change without notice.
Engine
| Engine Model | Komatsu SAA12V140E-7* |
| Cooling Type | Water-cooled, 4 cycle |
| Aspiration | Turbo-charged, after-cooled, cooled EGR |
| Number of cylinders in engine | 12 |
| Bore x stroke of engine (in) | 5.51 x 6.50 |
| Piston displacement (in³) | 1,860 |
| Governor | All-speed, electronic |
| Lubrication system | |
| Method | Gear pump, force-lubrication |
| Filter | Full-flow type |
| Air cleaner | Dry type with double elements and dust evacuator, plus dust indicator |
| Fuel system | Direct injection |
| SAEJ1995 - Gross (HP) | 900 |
| ISO 9249 / SAE J1349 - Net (HP) | 899 |
| Rated RPM | 2,050 |
| Fan drive method for radiator cooling | Hydraulic |
Transmission
| Torque converter | Three-elements, one-stage, one-phase |
| Transmission | Full-powershift, planetary type |
| 1st, forward (mph) | 4.7 |
| 1st, reverse (mph) | 4.9 |
| 2nd, forward (mph) | 7.7 |
| 2nd, reverse (mph) | 7.5 |
| 3rd, forward (mph) | 14.5 |
| 3rd, reverse (mph) | 15 |
Hydraulic system
| Boom cylinder - 2 (in) | 10.2 x 58.9 |
| Bucket cylinder - 1 (in) | 11.8 x 39.2 |
| Control valve | Spool type |
| Hydraulic cylinder type | Double-acting, piston type |
| Hydraulic pump | Piston pump |
| Capacity (US gpm) | 4 x 60.8 |
| Relief valve setting (psi) | 4,975 |
| Hydraulic pump | Piston pump |
| Capacity (US gpm) | 2 x 58.1 |
| Relief valve setting | 4,975 |
| Hydraulic cylinders type | Double-acting, piston type |
| Number of cylinders | 2 |
| Bore x stroke (in) | 6.3 x 22.7 |
| Boom | Raise, hold, lower, and float |
| Bucket | Tilt-back, hold, and dump |
| Raise (s) | 10.1 |
| Dump (s) | 2.9 |
| Lower (Empty) (s) | 4.8 |
Steering system
| Steering system type: | Articulated type, fully-hydraulic power steering |
| Steering angle: | 40° each direction |
| Minimum turning radius at the center of outside tire (ft , in): | 32 ft. 5 in |
Service refill capacities
| Cooling system (US gal) | 97.7 |
| Fuel tank (US gal) | 410.8 |
| Engine (US gal) | 31.7 |
| Hydraulic system (US gal) | 269.5 |
| Axle front (US gal) | 97.7 |
| Axle rear (US gal) | 97.7 |
| Torque converter and transmission (US gal) | 47.6 |
Brakes
| Service brake | Hydraulically actuated, wet multiple-disc brakes actuate on four wheels |
| Parking brake | Wet multiple-disc brake |
Axles and final drives
| Drive System | Four-wheel drive |
| Front Axle | Fixed, full floating |
| Axle Rear | Center-pin support, full floating, 20° |
| Final reduction gear | Planetary gear, single reduction |
| Differential gear | Conventional type |
| Reduction gear | Spiral bevel gear |
Engine and related components
- Air Cleaner, Double Element with Dust Indicator and Evacuator
- Engine, KOMATSU SAA12V140E-7, 12 Cylinder, Turbocharged, After Cooled, Diesel
Gross HP: 900HP / 2050 RPM (SAE J1995)
Net HP: 899 HP / 2050 RPM (ISO 9249 / SAEJ1349) - Engine Pre-lubrication System
- Exhaust Pipe Glasswooled with 2 x KDPF/KDOC
- Fuel Pre-Filter with Water Separator
- Hydraulic Cooling Fan, Reversible, Swing Out
- Radiator, Modular Core, Swing Out Lattice Type Mask
Elecrical system
- Access Stair Lamps, (1 RH & 2 LH)
- Alternator, 24V (140 Ampere)
- Back-up Alarm
- Back-up Lights, Rear, LED
- Batteries, 4 x 12V, (160Ah)
- Beacon, Amber Color
- Circuit Breaker
- Emergency Stop Switches, Ground Level (RH & LH)
- Heavy Duty Wiring Harness
- Horn, Electric
- Instrument Monitor Panel, Multi Color Display
- Secondary Shutdown Switch, Engine, Cab Mounted
- Starting Motors, 11kW / 2 x 24V, Direct Electric
- Stop and Tail Lights, LED
- Turn Signals, (2 Front, 2 Rear) with Hazard Switch, LED
- Work Lamps, LED, 22:
6 Front Work Lamps (3 RH & 3 LH)
6 Rear Work Lamps (3 RH & 3 LH)
4 Side Work Lamps (2 RH & 2 LH)
2 Axle Mounted Work Lamps (Front)
4 Cab Mounted Work Lamps (2 Front & 2 Rear)
Power train and controls
- 3rd gear prohibition and speed limit control
- Brake Cooling
- Brake, Parking, Wet Multiple Disc, SAHR
- Brakes, Service, Wet Multiple Disc, Sun Gear
- Powertrain Underguard
- Secondary Steering (ISO 5010)
- Steering, Advanced Joystick Steering System (AJSS)
- Transmission, 3-speed Planetary Automatic Powershift Modulation Clutch Kickdown, Automatic and Manual Control
- Throttle Lock with Auto Deceleration
- Variable Traction Control System
Operator environment
- 45 Degree Stairways (LH & RH)
- Access Ladder (LH & RH)
- Cab, Steel, LH Entrance, ROPS/FOPS (ISO 3471/ISO 3449) 2 x DC12V Outlets, Auto Air Conditioner, Heater, Defroster (Front & Rear), Blinds, Front & Rear with Roll Curtains,Ecology Guidance, Ecology Gauge Lever, Machine Lockout
- Main Monitor - Multi Color Electronic Display Onboard Diagnostics
- Power Windows
- Radio, AM/FM with Bluetooth
- Rearview Mirrors, RH & LH, Heated
- Rearview Camera Monitoring System (Dedicated Monitor)
- Room/Spot Lamps, LED
- Seat, Air Suspension, Reclining, Heated / Ventilated
- Seat Belt, 3" Retractable, Lap Belt with Detachable Shoulder Harness
- Secondary Door, RH
- Sunvisor
- Trainer Seat with Retractable Lap Belt
- Wiper/Washer Front (Intermittent), Side, Rear (Intermittent)
Maintenance
- Anchor Points, Tie Off Type
- Battery Isolator, Lockable
- Engine Bay Lamps, LED
- Fast Fuel System
- Ground Level Service Center: Grease Gauge, Indicator Lamp, Refill Port, Centralized KOWA Sampling Fluids Ports, Transmission, Hydraulic & Engine Oil, Torque Converter & Engine Coolant
- Jump Start Receptacle
- Machine Immobilization Switch, Lockable
- Starter Isolator, Lockable)
Hydraulics and work equipment
- 2-spool Valve for Boom and Bucket with Electronic Pilot Controls
- Automatic Digging System
- Boom Positioner with Kick-Out
- Bucket Positioner with Kick-Out
- Electronically Controlled Suspension System (ECSS)
- Inline Filters, Steering and Hydraulic
- Semi-Auto Approach and Dump System
- Wall Digging Protection Control
- Work equipment Shock Reduction Control
Other standard equipment
- Auto Idle Shutdown
- Auto-Lubrication System
- Front Fenders (LH & RH)
- Komatsu SmartLoader Logic
- KOMTRAX Plus
- Load Meter System
- Platform, Counterweight with Handrails
- Platform, Front with Handrails
- Rims for 45/65-45 Tires
- Tow Hitch
Vandalism protection
- Battery Box Lock
- Cap Lock & Cover for Fuel Tank
- Radiator, Filler Lock and Cover
- 15.0 yd3 bucket
- 17.0 yd3 bucket
- 19.0 yd3 bucket
- 45/65R45 (L-5) tubeless Tires
- 45 deg Power Staircase
- Cold weather field kit (electric heaters for hydraulic oil, transmission oil, Engine oil, and coolant)
- High lift boom
- KomVision camera system
Features and benefits
Designed for harsh digging environments
If you need to improve your digging performance, this wheel loader will help provide excellent breakout force for tough digging applications with a reinforced z-bar loader linkage.
Maneuver around the mine
Help your operators stay safe with an audible or visual alert when an obstacle is detected in the working area. KomVision with radar obstacle detection features six cameras and four radar panels to provide an all-around monitoring system for operators.
Operate with precision
When agility and precision are needed, this wheel loader will provide comfortable, simple operation throughout long shifts with its Advanced Joystick Steering System (AJSS), Electronic Pilot Controls (EPC) levers, a cab featuring a trainer seat, and heated/ventilated operator seats.
Helps operators perform efficiently
Help maintain productivity, especially when V-cycle loading haul trucks, with three automated features: automatic dig, semi-auto approach and semi-auto dump systems. These features help alleviate operator fatigue and improve efficiency.
Maintain control in slippery underfoot conditions
Help prevent tire slippage for increased tire life with this wheel loader's variable traction control system. Designed to help operators maintain traction in slippery or wet conditions, machine rim pull can be adjusted between 100% and 20% tractive effort depending on conditions.
Throttle lock with auto-deceleration
Engine RPM can be set to a constant speed in the cab for fast work equipment speeds and quick cycle times. Auto-deceleration automatically reduces engine RPM to 680 if no operator command is sensed after 10 seconds for additional fuel savings.
Fast work speeds with a smooth approach
A smooth approach for your operators when loading haul trucks, as well as simple control of tire slippage and shock reduction when shifting from forward to reverse. Modulation clutch adjusts the tractive effort using the left brake pedal from 100% to 20% of the torque converter output.
Travel performance you can trust
Help manage operator fatigue and material spillage with this wheel loader’s electronically controlled suspension system (ECSS) accumulators. This feature helps absorb the shock from the boom when in load-and-carry applications or tramming around the site.
Boost awareness with improved visibility
Help improve awareness around the mine by providing your operators the visibility they need. With 22 LED lamps, your operators will have enough bright lighting to help them perform their best, even in the toughest and darkest working conditions.
Maintenance made easy
Help save time with easily accessible maintenance at the ground level service center. Drain and fill the transmission oil, hydraulic oil, engine oil and coolant on the spot to avoid lengthy preventative maintenance services.
Work smarter, not harder
Help reduce fuel consumption while maintaining you machine’s performance with Komatsu's SmartLoader Logic. This engine control system senses the power requirement of each work phase and automatically changes between 'Economy' and 'Power' mode based on the application's demand.
Help improve decision-making
Make informed decisions to help manage your fleet with Komtrax, Komatsu’s remote equipment monitoring and management system. Additional vital information at your fingertips with Komtrax Plus can help you further reduce operational costs.