Product Description
Built around a 4-cylinder Yanmar 4TNV98 engine producing 42.4 kW at 2,100 rpm, this 2020 Hitachi ZX70-5A delivers 236 N·m of peak torque through a water-cooled, direct-injection 4-stroke system — engineered for consistent output across demanding duty cycles. Three variable axial piston main pumps supply dual 63 L/min circuits, keeping hydraulic response precise under full load.
- Bucket digging force: 55 kN / Rod digging force: 38 kN
- Maximum digging depth: 4,170 mm | Maximum digging radius: 6,320 mm
- Working hydraulic circuit: 26 MPa | Travel circuit: 31.4 MPa
- Climbing ability: 70% | Maximum tractive force: 47.8 kN
- Operating weight: 6,700 kg | Ground pressure: 31 kPa
- 450 mm track plates across 2,200 mm total track width for stable footing
- Transport dimensions: 6,080 × 2,260 × 2,600 mm — road-legal without permits in most regions
Sourced from Zhejiang, China, this joint-venture/import unit represents the ZX-5A series at its most capable in the 7-ton class. Hydraulic system capacity of 100 L and a 135 L fuel tank reduce service interruptions on extended shifts.
| Specifications | Value |
|---|---|
| No. | 1082609 |
| Tonnage (tons) | 7 |
| Working weight (kg) | 6700 |
| Bucket capacity (m³) | 0.33-0.38 |
| Boom length (mm) | 3720 |
| Rod length (mm) | 1620 |
| power | Traditional power |
| manufacturer | Joint venture/Import |
| bucket | backhoe |
| Engine type | 4TNV98 |
| Rated power (kw/rpm) | 42.4/2100 |
| Cooling mode | water-cooling |
| Cylinder diameter × stroke (mm) | 98 x 110 |
| Maximum torque (N.m) | 236/1350 |
| Number of cylinders (PCS) | 4 |
| Displacement (L) | 3.318 |
| Working form | 4 stroke - Water cooled - direct injection |
| Ground specific pressure (Kpa) | 31 |
| Rotation speed (rpm) | 10.7 |
| Climbing ability (%) | 70 |
| Bucket digging force (kN) | 55 |
| Rod digging force (kN) | 38 |
| Maximum tractive force (kN) | 47.8 |
| Travel speed (km/h) | 3.4-5.0 |
| Turning torque (Nm) | 12.9 |
| Rotary hydraulic motor type | 1 axial plunger motor |
| Type of walking hydraulic motor | 2 variable axial piston motors |
| Maximum flow of main pump (l/min) | 2 x 63/1 x 52.5 |
| Traveling Hydraulic Circuit (Mpa) | 31.4 |
| Rotary Hydraulic Circuit (Mpa) | 22.6 |
| Main pump type | 3 variable axial piston pumps |
| Working Hydraulic Circuit (Mpa) | 26 |
| Pilot Oil Circuit (MPa) | 3.9 |
| Pilot pump flow (L/min) | 21 |
| Bucket cylinders - Number × diameter × stroke (mm) | 1*85*55 |
| Bucket rod cylinders - Number × diameter × stroke (mm) | 1*95*60 |
| Boom cylinders - Number × diameter × stroke (mm) | 1*115*65 |
| Pilot pump type | 1 gear pump |
| Fuel Tank (L) | 135 |
| Hydraulic Tank (L) | 60 |
| Engine Oil changes (L) | 12.3 |
| Coolant (L) | 8 |
| Hydraulic System (L) | 100 |
| Total transport length (mm) | 6080 |
| Total transport width (mm) | 2260 |
| Total transport height (mm) | 2600 |
| Full cab height (mm) | 2600 |
| Counterweight ground clearance (mm) | 760 |
| Minimum ground clearance (mm) | 360 |
| Minimum turning radius of front working device (mm) | 1720 |
| Back end turning radius (mm) | 1750 |
| Onboard width (mm) | 2260 |
| Track gauge (mm) | 1750 |
| Track plate width (mm) | 450 |
| Total track width (mm) | 2200 |
| Track ground length (mm) | 2140 |
| Number of sprockets (single side) (each) | 1 |
| Number of wheels (single side) (each) | 5 |
| Number of track plates (single side) (PCS) | 38 |
| Maximum digging radius (mm) | 6320 |
| Maximum digging depth (mm) | 4170 |
| Maximum excavation height (mm) | 7150 |
| Maximum unloading height (mm) | 5060 |
| Maximum vertical digging depth (mm) | 3730 |
| Bulldozer lift or depth (mm) | 400/280 |
| Dodging plate width × height (mm) | 2320*435 |
| Maximum excavation radius of stop surface (mm) | 6170 |
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