POWER & PERFORMANCE
- EU Stage V engine
- Komatsu Hydraulic Mechanical Transmission (K‑HMT)
- High engine torque, at lower rpm
- Reduced fuel consumption & emissions
- Aggregate Handling specification
SAFETY
- High-Definition rear view camera
- Coloured steps and handrails
- Full LED working lights
- Front window cleaning steps
- Rear object detection system as option
COMFORT
- Remastered cab
- Full digital dashboard
- Comfort operator seat
- Keyless starting system
MAXIMISED EFFICIENCY
- Smart eco- & power modes
- Komatsu traction control system (K-TCS)
- Massive lifting power and break-out force
- Load Pilot weighing system with efficiency guidance
STATE OF THE ART CONTROLS
- Independent control of driveline and work equipment
- Improved cab ergonomics
- New feedback joystick steering system (optional)
- Travel speed control dial
MAINTENANCE
- Tiltable one-piece engine hood
- Wide core radiator with auto reverse fan
- Factory fitted automatic lubrication system
- Daily service points easily accessible from ground
BUCKETS AND ATTACHMENTS
- Wide range of high efficiency buckets
- Either raised or flat bottom buckets
- Hydraulic quick-coupler as option
- High dump- & light material buckets as option
Hydraulic system
| Steering System | |
| Hydraulic pump | Piston pump |
| Capacity (US gpm) | 41.7 |
| Cylinder type | Double-acting, piston type |
| Number of cylinders | 2 |
| Bore x stroke (in) | 3.7 x 1.5 |
| Loader Control | |
| Cylinder type | Double-acting, piston type |
| Hydraulic pump | Piston pump |
| Relief valve setting (psi) | 5,120 |
| Control System | |
| Control valve | 2-spool type |
| Boom | Raise, hold, lower, and float |
| Bucket | Tilt-back, hold, and dump |
| Hydraulic Cycle Time | |
| Raise (s) | 6.1 |
| Dump (s) | 2.1 |
| Lower (empty) (s) | 3.2 |
Transmission
| Transmission footnote | Measured with 26.5R25 tires |
| Type | Hydraulic Mechanical planetary type |
| Forward speed (mph) | 1.9 - 23.6 |
| Reverse speed (mph) | 1.9 - 17.4 |
Service refill capacities
| Cooling system (US gal) | 17.4 |
| Fuel tank (US gal) | 94.8 |
| Engine (US gal) | 10.8 |
| Hydraulic system (US gal) | 34.9 |
| Axle front (US gal) | 14.9 |
| Axle rear (US gal) | 14.9 |
| DEF tank (US gal) | 15.9 |
| Transfer case (US gal) | 10.6 |
Brakes
| Service brake | Hydraulically actuated, wet multiple-disc brakes actuate on four wheels |
| Parking brake | Wet multiple-disc brake |
| Secondary brake | One of dual service brake circuits is commonly used |
Engine
| Engine model | Komatsu DBA127 |
| Aspiration | Turbo-charged, after-cooled |
| Number of cylinders | 6 |
| Bore x stroke (in) | 5.1 x 6.3 |
| Governor | All-speed, electronic |
| Model footnote | Net horsepower at maximum radiator fan speed is 347 HP (259 kW). U.S. EPA Tier 4 Final and EU Stage V emissions certified. |
Axles and final drives
| Drive system | Four-wheel drive |
| Front axle | Fixed, semi-floating |
| Rear axle | Center-pin support, semi-floating, 26° total oscillation |
| Final reduction gear | Planetary gear, single reduction |
| Differential gear | Conventional type |
| Reduction gear | Spiral bevel gear |
Steering system
| Steering system type | Articulated type, full-hydraulic power steering |
| Steering angle | 35° each direction (40° to max end stop) |
| Minimum turning radius (ft, in) | 21 ft. 9 in |
Features and benefits
Increased engine power and efficiency
Komatsu DBA127 engine is compliant with U.S. EPA Tier 4 Final emissions. Redesigned and optimized with many advancements, such as proprietary technology to eliminate exhaust gas recirculation (EGR). This engine is designed for lower fuel consumption, and more power and torque at lower engine speeds.
Newly designed cab
A pressurized, large, four-pillar cab is designed to provide a quiet operator environment and features a new intuitive console design. Visibility was increased by 21% compared to the previous model by adding a lower glass area and eliminating the two rear pillars.
Komatsu Hydraulic Mechanical Transmission (KHMT)
Continuously variable transmission designed for high efficiency. Combining HST and the mechanical transmission in a dual power path allows excellent controllability and high transmission efficiency while promoting low fuel consumption. Dynamic braking of the transmission eliminates a separate brake cooling system.
Available yard loader (YL) configuration
Built for quarry and aggregate applications, the YL configuration is designed as a 3-pass match option for loading aggregate and other materials into on-highway trucks. The package includes a heavier counterweight, wide low-profile tires and rims, reinforced frame and optimized bucket size of 7.2 yd3 (5.5 m3).
Lower maintenance cost
Compared to WA480-8, this machine can help reduce maintenance costs by up to 21% due to an extended change interval for hydraulic oil and oil filters from 2,000 to 6,000 hours and an extended KDPF cleaning interval from 4,500 to 8,000 hours. Also, oil drain intervals can be extended up to 1000 hours.
Angle feedback joystick steering
AFJS articulates the vehicle body according to the tilt angle of the joystick. The joystick operation is converted into electrical signals for a smooth steering feel with less operating force, which may reduce wrist strain. Operators can adjust this low-effort drive-by-wire system. A steering wheel option is still available.
Independent work equipment control
Work equipment speed can be controlled with levers. Engine speed is automatically optimized based on lever operation without pressing an accelerator pedal. This separates the transmission control from work equipment, simplifies operation and reduces brake wear during hopper or truck loading.
Rear object detection system
Two rear-side radars are designed to detect objects and working machines approaching in the direction of travel while reversing the machine. A warning buzzer and indicator light alert the operator of a potential collision. False detection reduction functions help maintain uptime while promoting zero harm.
High-performance bucket
The optimized cross-sectional shape is designed for digging efficiency. The material is scooped and rolled up along the inclined floor of the bucket. Combining this redesigned bucket and the auto digging system can help boost productivity, especially for newer operators.