Komatsu Wheel Loaders WA470-7
WA470-7 Wheel Loader
The WA470-7 scores high marks for economy and power at the same time. Komatsu's Tier 4 interim technology ensures that the engine runs efficiently and saves fuel over the previous model. Selectable economy or power engine modes and SmartLoader Logic make sure the WA470-7 can be operated in the most efficient way. A large capacity torque converter with lock-up gives the WA470-7 tremendous power in the pile for filling the bucket and speed to climb ramps.
| Model | Komatsu SAA6D125E-6* | |
| Type | Water-cooled, 4-cycle | |
| Aspiration | Turbo-charged, after-cooled, cooled EGR | |
| Number of cylinders | 6 | |
| Bore x stroke | 4.9" x 5.9" | 125 mm x 150 mm |
| Piston displacement | 674 in³ | 11.04 ltr |
| Governor | All-speed, electronic | |
| Horsepower: | ||
| SAE J1995 / Gross | 273 HP | 204 kW |
| ISO 9249/SAE J1349 / Net | 272 HP | 203 kW |
| Rated rpm | 2000 rpm | |
| Fan drive method for radiator cooling | Hydraulic | |
| Fuel system | Direct injection | |
| Lubrication system: | ||
| Method | Gear pump, force-lubrication | |
| Filter | Full-flow type | |
| Air cleaner | Dry type with double elements and dust evacuator, plus dust indicator | |
| *EPA Tier 4 Interim and EU stage 3B emissions certified |
| Torque converter | 3-elements, 1-stage, 2-phase | |
| Transmission | Automatic, full-poweshift, counter-shaft type | |
| Travel speed: (Measured with 23.5-25 tires) | Forward | Reverse |
| 1st gear | 4.7 mph 7.6 km/h |
4.9 mph 7.9 km/h |
| 2nd gear | 8.1 mph 13.1 km/h |
8.4 mph 13.5 km/h |
| 2nd gear (Lock-up clutch ON) | 8.2 mph 13.2 km/h |
8.5 mph 13.7 km/h |
| 3rd gear | 14.2 mph 22.9 km/h |
14.7 mph 23.6 km/h |
| 3rd gear (Lock-up clutch ON) | 14.7 mph 23.6 km/h |
15.1 mph 24.3 km/h |
| 4th gear | 22.5 mph 36.2 km/h |
23.2 mph 37.3 km/h |
| 4th gear (Lock-up clutch ON) | 23.8 mph 38.3 km/h |
24.2 mph 39.0 km/h |
| Drive system | Four-wheel drive |
| Front | Fixed, semi-floating |
| Rear | Center-pin support, semi-floating, 26° total oscillation |
| Reduction gear | Spiral bevel gear |
| Differential gear | Conventional type |
| Final reduction gear | Planetary gear, single reduction |
| Service brakes | Hydraulically-actuated, wet disc brakes actuate on four wheels. |
| Parking brake* | Wet disc brake |
| *May be used in an emergency |
| Type | Articulated type, fully-hydraulic power steering | |
| Steering angle | 35° each direction (40° to max end stop) | |
| Minimum turning radius at the center of outside tire | 21'9" | 6630 mm |
| Steering system: | ||
| Hydraulic pump | Piston pump | |
| Capacity | 51.5 U.S. gal/min | 195 ltr/min |
| Relief valve setting | 3,555 psi | 24.5 MPa / 250 kgf/cm2 |
| Hydraulic cylinders: | ||
| Type | Double-acting, piston type. | |
| Number of cylinders | 2 | |
| Bore x stroke | 3.5" x 17.3" | 90 mm x 441 mm |
| Loader control: | ||
| Hydraulic pump | Piston pump | |
| Capacity | 68.7 U.S. gal/min | 260 ltr/min |
| Relief valve setting | 4,980 psi | 34.3 MPa / 350 kgf/cm² |
| Hydraulic cylinders: | ||
| Type | Double-acting, piston type | |
| Number of cylindersâ€â€bore x stroke: | ||
| Boom cylinder  2 | 5.5" x 30.0" | 140 mm x 764 mm |
| Bucket cylinder  1 | 6.3" x 22.6" | 160 mm x 575 mm |
| Control valve | 2-spool type | |
| Control positions: | ||
| Boom | Raise, hold, lower, and float | |
| Bucket | Tilt-back, hold, and dump | |
| Hydraulic cycle time (rated load in bucket) | ||
| Raise | 6.1 s | |
| Dump | 1.6 sec | |
| Lower (Empty) | 3.1 sec |
| Cooling system | 21.1 U.S. gal | 80 ltr |
| Fuel tank | 100.4 U.S. gal | 380 ltr |
| Engine | 10.0 U.S. gal | 38 ltr |
| Hydraulic system | 45.7 U.S. gal | 173 ltr |
| Axle front | 15.1 U.S. gal | 57 ltr |
| Axle rear | 14.8 U.S. gal | 56 ltr |
| Torque converter and transmission | 17.2 U.S. gal | 65 ltr |
