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Powered by a Doosan DE12TIS engine delivering 210 kW at 2000 rpm, this 2020 DH420LC-7 combines proven hydraulic architecture with exceptional digging performance. Operating at 41,200 kg working weight with dual 315 L/min main pumps, the machine generates bucket digging force up to 264.6 kN and rod force reaching 218.5 kN—engineered for high-production quarrying, deep foundation work, and mass excavation.
- Hydraulic System: Parallel inclined axial piston pumps, 34.3 MPa boost circuit, water-cooled efficiency
- Reach Capability: 11,520 mm maximum digging radius, 7,725 mm digging depth
- Bucket Range: 1.44–2.18 m³ capacity with multiple rod configurations (2600/3250/4000 mm)
- Mobility: 5.5 km/h travel speed, 3,660 mm rear swing radius, 600 mm track plates
- Location: Wenzhou, Zhejiang Province
Built at Doosan's Yantai facility, the DH420LC-7 represents joint-venture manufacturing standards with consistent component sourcing. Current availability in Zhejiang offers regional buyers reduced logistics costs and faster deployment timelines.
| Specifications | Value |
|---|---|
| No. | 1044097 |
| Tonnage (tons) | 42 |
| Working weight (kg) | 41200 |
| Bucket capacity (m³) | 1.44-2.18 |
| Boom length (mm) | 6700 |
| Rod length (mm) | 2600/3250/4000 |
| Country of origin | Yantai, Shandong Province |
| power | Traditional power |
| manufacturer | Joint venture/Import |
| bucket | backhoe |
| Engine type | Doosan DE12TIS |
| Rated power (kw/rpm) | 210/2000 |
| Cooling mode | water-cooling |
| Rotation speed (rpm) | 9.5 |
| Bucket digging force (kN) | 242.1/264.6 |
| Rod digging force (kN) | 218.5/139.1; 176.4/193.1; 152.9/166.6 |
| Travel speed (km/h) | 3.3-5.5 |
| Maximum flow of main pump (l/min) | 2 x 315 |
| Traveling Hydraulic Circuit (Mpa) | 26.5 |
| Rotary Hydraulic Circuit (Mpa) | 26.5 |
| Main pump type | Parallel inclined axial piston pump |
| Working Hydraulic Circuit (Mpa) | Standard 31.4/ Supercharged 34.3 |
| Pilot pump flow (L/min) | 24 |
| Total transport length (mm) | 11690 |
| Total transport width (mm) | 3350 |
| Total transport height (mm) | 3575 |
| Full cab height (mm) | 3150 |
| Counterweight ground clearance (mm) | 1277 |
| Minimum ground clearance (mm) | 540 |
| Back end turning radius (mm) | 3660 |
| Onboard width (mm) | 2990 |
| Total track length (mm) | 5215 |
| Track gauge (mm) | 2750 |
| Track plate width (mm) | 600 |
| Total track width (mm) | 3350 |
| Track ground length (mm) | 4250 |
| Maximum digging radius (mm) | 11520 |
| Maximum digging depth (mm) | 7725 |
| Maximum excavation height (mm) | 11000 |
| Maximum unloading height (mm) | 7845 |
| Maximum vertical digging depth (mm) | 4400 |
| Maximum excavation radius of stop surface (mm) | 11310 |
| Maximum effective digging depth (mm) | 7570 |
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