Electric Rock Drills
【Power Source】 Electric
【Voltage】380 V
【Frequency】50 Hz/Variable Frequency
【Max. Drilling Diameter】50 mm
【Electrical Energy Utilization Rate】 50%–60%
【Application】 Mining, quarrying, tunneling, construction, stone processing, and rock excavation
【Drilling Material】Rock, concrete, stone, and other hard formations
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Advantages
The electric rock drill is a powerful and efficient drilling machine designed for drilling holes in rock, concrete, stone, and other hard materials. It uses an electric motor to drive the drilling mechanism, providing stable performance, high drilling efficiency, and convenient operation.
The electric rock drill is widely used in mining, quarrying, construction, tunneling, underground engineering, and other applications where reliable rock drilling is required. Heavy-duty electric rock drills are typically mounted on tripods, drill rigs, or other support systems and are designed for high-power rock drilling in mining, quarrying, and construction applications. Smaller electric drilling tools, such as portable core drills and handheld rock or concrete breakers, are used for drilling and breaking rock, concrete, and other hard materials.
【Features】
- Efficient Electric Drive: The electric motor provides stable power for the drilling mechanism, helping maintain consistent drilling performance and improving working efficiency.
- Strong Rock Drilling Capability: The drill is designed for hard and abrasive materials and can be used for drilling holes in various rock formations, concrete structures, and stone.
- Easy Operation: Compared with manually operated drilling equipment, the electric rock drill provides mechanical power that reduces operator effort and makes continuous drilling more convenient.
- Compact and Practical Design: The machine can be configured for different working environments and drilling requirements, making it suitable for mining, construction, quarrying, and underground operations.
- Wide Application: Electric rock drills can be used for blast-hole drilling, anchor-hole drilling, construction drilling, tunneling, quarrying, and other rock excavation applications.
- Reliable Performance: A robust drilling mechanism and electric drive system provide dependable operation for demanding working conditions. Proper selection of drill bits and operating parameters can further improve drilling efficiency and service life.
Product Structure
【Electric Rock Drills Structure】
The main components of an electric rock drill generally include the electric motor, drilling mechanism, drill chuck, control system, handle or support structure, and drill rod/bit assembly.
The electric motor supplies power to the drilling mechanism. The mechanism converts the motor's rotational power into the required drilling action, while the drill rod and bit transfer the energy to the rock.
Different drill bits can be selected according to the hardness, abrasiveness, and structure of the material being drilled.
【Electric Rock Drills Working Principle】
The electric motor supplies power to the rock drill. After the machine is started, the motor drives the internal drilling mechanism, which generates the required rotational and/or impact motion.
The drill bit contacts the rock surface and progressively breaks and removes the material. As the drilling operation continues, the drill rod advances into the rock to form a hole of the required depth.
The drilling performance depends on factors such as rock hardness, drill-bit type, drilling depth, motor power, feed pressure, and operating conditions.
Technical Parameters
| Model | YDT30 | YDT30A | YDT26 | |
| Power Specifications | Power Supply | 380V/50Hz | 380V, Variable Frequency Drive | 380V/50Hz |
| Electric Motor | 3 kW | 3 kW, Variable Frequency Drive | 2.2 kW | |
| Rock Drilling Performance | Impact Energy | 44 J | 46 J | 38 J |
| Torque | ≥17.6 N·m | |||
| Impact Rate
|
200–2100 blows/min | |||
| Drill Rod Rotation Speed | ≥150 rpm | |||
| Drilling Capacity | Drilling Diameter | Φ28–50 mm | Φ28–50 mm | φ26-42mm |
| Drilling Speed | ≥150 mm/min | |||
| Max Drilling Depth | 4.5 m | 4.5 m | 3.5 m | |
| Water Pressure | 0.1–0.4 MPa | |||
| Water Hose Inner Diameter | 13 mm | |||
| Leg length | 1400-2700 mm | |||
| Lubricating Oil | Summer: No. 15; Winter: No. 10 (Automotive Engine Oil) | |||
| Main Unit Weight | 30 Kg | 31 Kg | 26 Kg | |
【How to Choose an Electric Rock Drill?】
When selecting an electric rock drill, consider the following factors:
- Rock hardness: Harder formations require an appropriate drilling mechanism and high-quality drill bits.
- Hole diameter:Select the drill and bit according to the required hole diameter.
- Drilling depth: Deeper holes may require longer drill rods and a suitable support system.
- Power supply: Confirm that the motor voltage and frequency match the available electrical supply.
- Working environment: Underground, quarry, construction, and other applications may require different configurations.
- Required drilling capacity: Select the appropriate machine according to the expected drilling speed and workload.
A suitable electric rock drill should be selected according to the rock properties, hole diameter, drilling depth, required production rate, and available power supply. As a rock drill supplier, we can provide equipment selection and customized configurations according to your specific drilling requirements.
Successful Cases
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