DTH drilling machine is a surface drilling rig designed for down-the-hole drilling applications. The YG420 series includes the YG420B-1 and YG420TA-1 models, with different hole diameter ranges, feed forces, rotation torque, engine configurations, and machine weights.
Both models use a hydraulic cylinder and chain feeding system. The equipment can be configured with drill rods, DTH hammers, drill bits, and steel wire hoses. Dust collectors are available for the YG420B-1 and YG420TA-1 configurations.
The two YG420 models provide different drilling configurations, allowing customers to select equipment according to required hole diameter, drilling conditions, and project requirements.
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DTH Drilling Machine Technical Parameters
YG420B-1 DTH Drilling Machine
The YG420B-1 is a compact configuration in the YG420 series. It provides a 90- 127 mm hole range, 15kN maximum feed force, and 25kN maximum pullback force.
| Parameter | Specification |
|---|---|
| Feeding Method | Hydraulic cylinder + chain |
| Feed Total Length | 5,500mm |
| Feed Extension | 970mm |
| Feed Travel Length | 3,670mm |
| Maximum Feed Force | 15kN |
| Maximum Feed Speed | 26m/s |
| Maximum Pullback Force | 25kN |
| Hole Range | 90-127mm |
| Optimum Hole Depth | 21m |
| Drill Pipe | 76mm x 3m |
| Hammer | 4in |
| Rotation Torque | 2,200N.m |
| Rotation Speed | 0-150rpm |
| Fuel Tank Capacity | 70L |
| Maximum Traveling Speed | 2.5km/h |
| Maximum Gradeability | 25° |
| Ground Clearance | 310mm |
| Maximum Traction Force | 40kN |
| Weight | 4,620kg |
| Dimensions | 5,700 x 2,130 x 2,300mm |
| Dust Collection | Available |
The YG420B-1 is equipped with a 4-inch DTH hammer configuration and can be supplied with a dust collector. The documented engine configurations include different Yuchai engine options depending on the selected configuration and emission standard.
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YG420TA-1 DTH Drilling Machine
The YG420TA-1 provides a larger hole range and higher listed feed and pullback forces than the YG420B-1.
| Parameter | Specification |
|---|---|
| Feeding Method | Hydraulic cylinder + chain |
| Feed Total Length | 5,880mm |
| Feed Extension | 970mm |
| Feed Travel Length | 3,670mm |
| Maximum Feed Force | 20kN |
| Maximum Feed Speed | 30m/s |
| Maximum Pullback Force | 45kN |
| Hole Range | 115-138mm |
| Optimum Hole Depth | 21m |
| Drill Pipe | 76mm x 3m |
| Hammer | 4in |
| Rotation Torque | 3,200N.m |
| Rotation Speed | 60-110rpm |
| Fuel Tank Capacity | 70L |
| Maximum Traveling Speed | 3km/h |
| Maximum Gradeability | 25° |
| Ground Clearance | 310mm |
| Maximum Traction Force | 54kN |
| Weight | 5,500kg |
| Dimensions | 5,600 x 2,308 x 2,500mm |
| Dust Collection | Available |
The YG420TA-1 uses a 70kW engine configuration according to the supplied specifications. Its maximum feed force, pullback force, and rotation torque are higher than those of the YG420B-1.
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DTH Borewell Machine Core Features
1. Hydraulic Cylinder and Chain Feeding
The DTH drilling machine uses a hydraulic cylinder and chain feeding system. The YG420B-1 provides a 3,670mm feed travel length, while the YG420TA-1 uses the same feed travel length with a longer total feed length.
The hydraulic feeding structure provides the mechanical movement required for drill pipe advancement and pullback.
2. Different Hole Diameter Ranges
The DTH drilling machine series provides two different hole ranges.
The YG420B-1 covers 90- 127 mm, while the YG420TA-1 covers 115- 138 mm.
Customers can therefore select the model according to the required drilling diameter.
3. DTH Hammer Configuration
Both YG420 configurations use a 4-inch DTH hammer specification. The drilling package can also include drill rods, drill bits, and steel wire hoses.
This configuration is designed around the down-the-hole drilling method specified for the equipment.
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Down Hole Drilling Equipment Components
The equipment can be supplied with the main drilling components required for operation.
Standard configuration includes:
- 76mm drill pipe
- 3m drill pipe length
- 4-inch DTH hammer
- Drill bit
- Steel wire hose
- Dust collector for applicable configurations
The YG420B-1 and YG420TA-1 both support dust collection according to the supplied product information.
Customers should confirm the required drilling tools and auxiliary equipment before ordering.
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Down the Hole Drilling Rig Model Comparison
| Feature | YG420B-1 | YG420TA-1 |
|---|---|---|
| Hole Range | 90-127mm | 115-138mm |
| Feed Force | 15kN | 20kN |
| Pullback Force | 25kN | 45kN |
| Rotation Torque | 2,200N.m | 3,200N.m |
| Traveling Speed | 2.5km/h | 3km/h |
| Traction Force | 40kN | 54kN |
| Weight | 4,620kg | 5,500kg |
| Dust Collector | Available | Available |
The YG420B-1 has a smaller minimum hole diameter, while the YG420TA-1 provides higher listed mechanical forces and a larger maximum hole diameter.
This comparison can help buyers quickly identify the more suitable DTH drilling machine according to drilling diameter and machine performance requirements.
DTH Borewell Machine Selection and Support
Choose the suitable DTH drilling machine according to hole diameter, drilling depth, ground conditions, drilling tools, and auxiliary equipment.
The YG420 series provides two documented configurations:
- YG420B-1: 90- 127 mm hole range
- YG420TA-1: 115- 138 mm hole range
Both models use a hydraulic cylinder and chain feeding system and support a 4-inch DTH hammer configuration.
Contact the technical team for complete specifications, drilling tool configuration, air compressor requirements, dust collector configuration, and model selection support.
