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Construction Machinery. Loader-Digger Komatsu WB70A-1
Sizes
| Transport width | 1850 mm |
| Transport height | 3091 mm |
| Height to cab upper part | 2660 mm |
| Wheelbase | 2150 mm |
| Clearance | 440 mm |
Operation
| Working weight 4wd | 5650 kg |
| Maximum weight | 6400 kg |
| Fuel Capacity | 70 l. |
| Hydraulic system fluid volume | 65 l. |
| Oil system fluid volume | 10 l. |
| Cooling system fluid volume | 15 l. |
| Front axle fluid volume | 4 l. |
| Rear axle fluid volume | 5.2 l. |
| Front tyres size 2wd / 4wd | 12.5 x 20 |
| Rear tyres size 2wd/4wd | 12.5 x 20 |
| Operating voltage | 12 V |
| Generator current strength | 60 amperes |
Motor
| Manufacturer | Komatsu |
| Model | 4D98E-1FA |
| Effective power | 52.8 kW |
| Displacement | 3.3 l. |
| Power measured at | 2500 rev / min |
| Torque measured at | 1200 rev / min |
| Cylinders number | 4 |
| Maximum effective torque | 251 Nm |
Load-transfer device
| Bucket volume | 0.7 m3 |
| Shovel width | 1850 mm |
| Bucket breakout force | 43.1 kN |
| Lifting capacity at full height | 2110 kg |
| Ground clearance at maximum unloading height | 2480 mm |
| Radius at max unloading height | 870 mm |
| Digging depth | 110 mm |
Hydraulic system
| Pump bandwidth | 116 l/min |
| Overflow valve pressure | 20000 kPa |
| Type of pump | Pump with double gear |
Gear box
| Transmission type | Hydro-Static Transmission |
| Forward gears number | 4 |
| Reverse gears number | 4 |
| Maximum forward speed | 39 km/h |
| Maximum reverse gear | 39 km/h |
Backdigger
| Digging depth in unfolded state | 4390 mm |
| Hinge joint radius in folded state | 4665 mm |
| Hinge joint radius in unfolded state | 5316 mm |
| Bucket digging force in folded state | 4200 kg |
| Loading height in folded state | 3100 mm |
| Loading height in unfolded state | 3611 mm |
| Radius at high-altitude loading in folded state | 1095 mm |
| Radius at high-altitude loading in unfolded state | 1551 mm |
| Digging depth in folded state | 3675 mm |
Images
Sizes
| 2. Transport width | 1850 mm |
| 3. Transport height | 3091 mm |
| 4. Wheelbase | 2150 mm |
| 5. Clearance | 440 mm |
| 6. Height to cab upper part | 2660 mm |
Load-transfer device
| 7. Ground clearance at maximum unloading height | 2480 mm |
| 8. Radius at max unloading height | 870 mm |
| 9. Digging depth | 110 mm |
Backdigger
| 10. Loading height in folded state | 3100 mm |
| 11. Hinge joint radius in folded state | 4665 mm |
| 12. Digging depth in folded state | 3675 mm |
| 13. Radius at high-altitude loading in folded state | 1095 mm |