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MWD's full range of underground electric explosion-proof hydraulic excavators, covering a variety of narrow body models, the 1.6-meter narrow tunnel model is suitable for narrow mine tunnels, and the three-section jib supports 180°/360° Rotating, steel crawler with strong climbability and low grounding specific pressure. The whole machine is purely electric and has no exhaust gas. It can be equipped with a breaker and remote control system to meet the needs of coal mines and metal mines for excavation and slag removal and roadway dressing construction. The manufacturer supports customized sizes and configurations on demand, and can be exported directly from stock.
Main Technical Parameters of MWD Series Coal Mine Hydraulic Excavator
- Product Introduction
The MWD series underground hydraulic excavator is dedicated explosion-proof electric excavation equipment specially developed for coal mine underground operations. Featuring a lightweight compact body, it delivers excellent passability for narrow and low-clearance mine roadways.
The MWD6/0.3L(A) 1.6m narrow-body rotary boom excavator is the mainstream standard model, perfectly matching small & medium coal mines and confined low-narrow working tunnels. It is equipped with a flameproof motor and variable-displacement hydraulic system with optimized pressure-flow matching logic. The design effectively avoids overheating during long-duration continuous heavy-duty work, lowers running noise, and greatly improves safety inside enclosed underground spaces.
The machine is factory-fitted with a 3-section rotary working arm. Its auxiliary boom supports 180° and 360° free rotation, while the whole upper body can rotate 360° without dead working zones. Adopting a heavy-duty steel crawler chassis, the unit boasts high minimum ground clearance and powerful climbing performance, running steadily on muddy and gravel tunnel floors and effectively reducing vehicle trapping risks.
A reserved hydraulic quick connector is pre-installed on the machine, enabling fast matching with supporting hydraulic breakers to fulfill multi-scenario construction tasks including excavation, muck removal, rock crushing and roadway expansion.
Benefiting from compact overall dimensions and ultra-small turning radius, the excavator can easily access narrow mine drifts. The front dozer blade and large-capacity digging bucket jointly boost overall construction efficiency. All electrical components adopt full explosion-proof design with multi-layer leakage and overload protection mechanisms.
We provide customized solutions: machine width, power output and attachment configurations can be adjusted according to customers’ actual tunnel width, slope gradient and construction requirements. Every unit undergoes complete factory debugging before delivery, accompanied by standard spare parts and on-site after-sales technical guidance.
The drawings are paired with side operation views and top top views to completely list the dimensions of the entire machine, maximum excavation extension distance, and height difference parameters, which can be used for tunnel space verification and equipment selection verification for overseas projects.
- Complete Technical Parameter Table
| Category | Parameter Item | Unit | MWD6/0.3L(A) Specification |
| Basic Model | Equipment Model | — | MWD6/0.3L(A) |
| Working Arm Structure | Arm Configuration | — | 3-section rotary boom |
| Auxiliary Arm Rotation Angle | Swing Range of Auxiliary Arm | ° | 180 / 360 |
| Hydraulic System | Rated Working Pressure | MPa | 22 |
| Main Pump Flow Rate | L/min | 120 | |
| Hydraulic Pump Type | — | Variable Displacement Pump | |
| Travel Hydraulic Form | — | Integrated Hydraulic Travel Motor | |
| Travel Chassis | Travel Mode | — | Steel Crawler Track |
| Track Ground Contact Pressure | MPa | ≤0.1 | |
| Travel Speed | km/h | 0.98 | |
| Minimum Ground Clearance | mm | 300 | |
| Maximum Climbing Gradient | ° | ≥20 | |
| Upper Body Rotation | Full Machine Rotation Angle | ° | 360 |
| Rotation Speed | r/min | 0–9 | |
| Crawler Accessories | Track Type | — | Heavy-Duty Steel Track |
| Single Track Width | mm | 300 | |
| Digging Performance | Standard Bucket Capacity | m³ | 0.28 |
| Maximum Digging Radius | mm | ≥3906 | |
| Maximum Dumping Height | mm | ≥4450 | |
| Maximum Unloading Height | mm | ≥1700 | |
| Maximum Digging Depth | mm | ≥1200 | |
| Mobility Index | Minimum Turning Radius | mm | ≤1600 |
| Digging Force | Bucket Digging Force | kN | 15 |
| Hydraulic Supporting Flow | Working Hydraulic Flow | L/min | 4.9 |
| Front Stabilizer | Dozer Blade Size (W×H) | mm | 1600×270 |
| Overall Machine | Overall Dimensions (L×W×H) | mm | 3750×1600×2250 |
| Total Operating Weight | t | 6 | |
| Matching Hydraulic Breaker | Breaker Model | — | AR68 |
| Total Breaker Weight | kg | 189 | |
| Breaker Overall Length | mm | 1382 | |
| Breaker Width | mm | 271 | |
| Working Hydraulic Pressure Range | kg/cm² | 100–130 | |
| Matching Oil Flow Range | L/min | 500–1000 | |
| Standard Chisel Diameter | mm | 68 |
Analysis of Standard Models for Mining Excavators
Tracked mining excavator fitted with hydraulic breaker, ideal for underground rock breaking jobs
High-flexibility rotary breaking arm for underground hard rock demolition and roadway widening construction
High-power milling head adapts to hard rock roadway tunneling and roadway renovation
Heavy-duty mining breaker excavator engineered for underground hard rock breaking and roadway rehabilitation
Medium-sized explosion-proof mining excavator for underground roadway excavation and surrounding rock breaking maintenance