Product Description
Engineered with Hitachi's precision hydraulic architecture, this 2016 ZX70-5A delivers 7-ton class performance through a triple variable axial piston pump system flowing 2×63 + 1×52.5 L/min. The 4TNV98 engine generates 42.4 kW at 2100 rpm with 236 N·m maximum torque, providing reliable water-cooled power for demanding excavation tasks. Working hydraulic pressure reaches 26 MPa, translating to 55 kN bucket digging force and 38 kN arm digging force—substantial capability for compact earthmoving operations.
Operational specifications demonstrate balanced engineering: 6,320 mm maximum dig reach, 4,170 mm dig depth, and 7,150 mm working height cover versatile job site requirements. The undercarriage features 2,140 mm track ground contact with 450 mm shoe width, delivering 31 kPa ground pressure for stable performance across varied terrain. Compact transport dimensions of 6,080×2,260×2,600 mm facilitate easy relocation between sites.
Currently located in Luzhou, Sichuan, this joint-venture manufactured excavator represents proven ZX-5A series reliability with comprehensive hydraulic integration and efficient fuel management through its 135-liter tank capacity.
| Specifications | Value |
|---|---|
| No. | 1031224 |
| 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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