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The MWD3.5/0.2L mining hydraulic excavator is a special electric explosion-proof underground equipment. It is equipped with a 30KW explosion-proof motor. It comes standard with a three-section arm structure, supports 180°/360° auxiliary arm rotation options, and 360° full range rotation operations. The machine body is compact and flexible, with low grounding pressure. It can adapt to complex underground steep slope working conditions. It supports the optional customization of breaker hammer and remote control system. It integrates the functions of excavation, slag cleaning and tunnel dressing. It has complete explosion-proof qualifications and is specially designed for underground construction in coal mines and metal mines.
Introduction of MWD3.5/0.2L Coal Mine Hydraulic Excavator
- Product Positioning & Application Scenarios
The MWD3.5/0.2L coal mine hydraulic excavator is a high-power, multi-functional, explosion-proof electric underground excavator. Developed with mature mining machinery R&D technology, it is suitable for various working conditions in coal mines and metal mines, including tunnel excavation, slag removal, section trimming and collapse clearing. Supporting customized functions, it serves as the core equipment for medium and small-scale precise underground construction and meets the requirements of long-term and high-intensity underground operations.
- Core Power & Hydraulic System
Equipped with a 30KW explosion-proof motor and variable pump hydraulic system, the machine features stable and controllable rated pressure, sufficient flow and smooth, efficient power output, supporting long-time continuous operation. It adopts integrated hydraulic walking and steel crawler structure, with ground pressure ≤0.08Mpa, delivering excellent adaptability to muddy and gravel underground roads. With a ground clearance of ≥210mm and a maximum climbing angle of 14°, it easily copes with complex underground terrain. The minimum turning radius is ≤1500mm, ensuring flexible steering and superior adaptability for narrow tunnel operations.
- Advantages of Three-section Boom Working Mechanism
The machine is equipped with a three-section boom working mechanism. The main boom achieves 70° swing, and the whole machine supports 360° full-range rotation with a rotating speed of 0-11r/min. The auxiliary boom is optional with 180°/360° rotation, realizing wide working coverage without blind spots. The standard bucket capacity is 0.2±0.05m³, meeting conventional excavation and slag removal demands. Fitted with a 1000(1400)×260mm wide dozer blade, it can level the ground and stabilize the machine during operation. Its excavation radius is 4200±100mm, maximum lifting height 4100±100mm, maximum unloading height 2850±100mm, and maximum digging depth 1050±100mm. The bucket digging force is ≥14KN. Weighing 3.5 tons with overall dimensions of 4300×1000(1400)×2200mm, the compact body adapts perfectly to narrow underground spaces.
- Optional Functions & Safety Advantages
The machine can be equipped with a hydraulic breaker and wireless remote control system as required, integrating excavation, hard rock breaking and remote precise operation to realize multi-purpose construction. The matched hydraulic breaker weighs 110kg with a total length of 1100mm, working hydraulic pressure of 90-120kg/cm³, oil flow of 20-60L/min and impact frequency of 700-1200bpm, delivering stable breaking performance for underground hard rock operations. The whole electrical system adopts a full explosion-proof design with multiple safety protections. It produces no exhaust emissions and low noise, safe and environmentally friendly for enclosed underground construction environments. The wireless remote control distance reaches 40 meters with wireless signal control for convenient and safe operation.
- Supporting Services
The manufacturer provides personalized customized solutions for special working conditions with sufficient product stock for fast delivery. One-stop services including professional equipment installation, commissioning and long-term after-sales maintenance are provided to ensure stable and durable operation of the equipment.
- Complete Technical Parameter Table
| Project | Unit | Parameter Value |
| Model | / | MWD3.5/0.2L |
| Working Structure | / | Three-section Arm |
| Auxiliary Arm Rotation Angle | ° | 180/360 |
| Arm Swing Angle | ° | 70 |
| Motor Power | KW | 30 |
| Working Pressure | Mpa | 18/21.5 |
| Main Pump Flow | L/min | 85 |
| Hydraulic Pump Type | / | Variable Pump |
| Walking Type | / | Chain Walking |
| Grounding Pressure | Mpa | ≤0.08 |
| Driving Speed | km/h | 0.98 |
| Ground Clearance | mm | ≥210 |
| Climbing Ability | ° | ≥14 |
| Rotation Angle | ° | 360 |
| Rotation Speed | r/min | 0-11 |
| Track Type | / | Steel Chain Track |
| Track Width | mm | 300 |
| Bucket Capacity | m³ | 0.2±0.05 |
| Excavation Radius | mm | 4200±100 |
| Maximum Tilt Height | mm | 4100±100 |
| Maximum Unloading Height | mm | 2850±100 |
| Maximum Digging Depth | mm | 1050±100 |
| Minimum Turning Radius | mm | ≤1500 |
| Bucket Digging Force | KN | ≥14 |
| Dozer Blade Size | mm | 1000（1400）×260 |
| Overall Dimensions | mm | 4300×1000（1400）×2200 |
| Vehicle Weight | T | 3.5 |
| Remote Control Distance | mm | 40000 |
| Remote Control Method | / | Wireless Signal |
| Hydraulic Breaker Total Weight | kg | 110 |
| Breaker Total Length | mm | 1100 |
| Breaker Full Width | mm | 196 |
| Driving Hydraulic Pressure | kg/cm³ | 90-120 |
| Driving Oil Quantity | l/min | 20-60 |
| Strike Frequency | bpm | 700-1200 |
| Hose Diameter | mm | 9.53/12.7 |
| Drill Rod Diameter | mm | 53 |
| Drill Rod Weight | kg | 11 |
Configuration table of mining hydraulic excavators
Standard Model Analysis of MWD / MWC / KWD / KWC Mining Hydraulic Excavators
Electric explosion-proof mini excavator for earthwork excavation and site grading in narrow underground roadways
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This mining excavator adopts foldable 3-section hydraulic arm and end hydraulic breaker, plus front dozer blade for stabilization. Its crawler chassis delivers great trafficability, ideal for scaling, roadway widening and hard rock breaking in metal mines. The compact body suits low clearance underground roadways and can get KA mining safety certification.
This mining excavator adopts rear cooling cabinet, 3-section hydraulic arm and crawler travel system with basic safety canopy. It can be fitted with hydraulic breakers for underground rock breaking and roadway maintenance. The durable steel tracks adapt to rough underground roads, the machine can obtain KA certification and is widely used in metal mine operations.
This KA-certified compact crawler mining excavator is equipped with 3-section folding hydraulic arm and hydraulic breaker. The front dozer blade stabilizes the machine and levels ground wear-resistant steel crawlers adapt to rough underground road conditions, low-profile safety canopy allows smooth passage in narrow tunnels, widely used for rock scaling, roadway widening and hard rock maintenance in metal mines.
Three-section boom with rotatable middle joint enables dead-zone-free breaking and excavation
The screen shows multiple small electric excavators of the same model that have completed factory preparation. They all use a yellow body, standard bucket, crawler chassis and roof protection structure. They are suitable for engineering construction, site leveling, material handling and other operating scenarios.