Products Description
When it comes to hard rock drilling, efficiency and reliability matter most. That's why I designed the RCZ412B-1 rock blasting drilling rig as a lightweight yet powerful DTH (Down-The-Hole) solution. With a drilling diameter range of 90–115mm, this rig is purpose-built for demanding formations like granite and basalt, even those with compressive strength up to 300MPa. Compared to conventional drilling, it improves efficiency by 50%, helping you save both time and cost on site.
The RCZ412B-1 uses high-pressure air to power the DTH hammer, transferring shock energy directly to the rock face for fast penetration. With its independent rotation mechanism and optimized hammer design, it adapts to both vertical and inclined drilling tasks-suitable for projects such as slope pre-splitting, anchor cable holes, and blast holes in open-pit mines.
Why choose the RCZ412B-1?
- Smarter drilling control – The intelligent control system automatically adjusts drilling parameters, protecting the drill bit and ensuring longer tool life.
- Energy-efficient performance – Optimized shock energy transmission and an advanced slag removal system cut energy use by more than 20% in hard rock drilling.
- Built for tough geology – From medium-hard to extremely hard rock (f≥8), the rig consistently delivers stable, high-penetration drilling results.
- Proven DTH technology – First developed in 1932, DTH drilling has become the standard for hard rock, and this rig builds on decades of innovation to give you a more efficient and durable solution.
Technical data
|
Product Name |
RCZ412B-1 Separated DTH Surface drill Rig |
|
Power |
58KW |
|
Hole Depth |
20m |
|
Drill pipe Sizes |
60*2,000 mm |
|
Hole Diameter |
90-115 mm |
|
Climbing angles(°) |
25° |
|
Rotation torque ( Max.) |
1,650 N.m |
|
Rotation Speed |
100-220 rpm |
|
Feed Type |
Cylinder/Chain |
|
Total Weight |
3850KG |
|
Transportation Dimensions(L×W×H) |
4450x2080x2460mm |
Technology upgrading
Stronger, longer-lasting pumps – Upgraded from aluminum housing to a combination of tandem hydraulic pumps and a steel-shell pump, boosting dust collection efficiency and extending service life.
High-speed rotary head – The dual-motor design has been upgraded to a 490cc single-motor rotary head, delivering higher speed and reliability for demanding operations.
Stable machine layout – A redesigned structure lowers the center of gravity, while single-grouser track shoes improve mobility on rough terrain.
Hydraulic system upgrades – Larger filtration area, improved precision, and enlarged oil suction/return lines double the lifespan of hydraulic components.
Durable connections – The rotary head spindle now uses a threaded connection instead of a parallel key, ensuring greater durability under heavy loads.
Reinforced structure – Stronger dust collection slide seat and positioning sleeve, plus larger chain pin diameters, provide higher reliability and longer service life.
Improved dust control & rod storage – Dust cover travel has been extended from 200mm to 300mm, and the rod rack capacity increased from 6 to 9 rods for more efficient drilling operations.
Recommended Specifications & Operational Guidelines
-
Recommended Operating Conditions:
- Optimal for hard rock formations with compressive strength ≥200MPa
- Suitable for hole diameters ranging from 90mm to 200mm
-
Operating Limitations:
Not recommended for soft rock formations (<200MPa compressive strength) due to:
- Reduced energy efficiency
- Accelerated drill bit wear
-
Maintenance Recommendations:
Regular maintenance:
- Clean rock discharge channels periodically
- Inspect DTH hammer seal integrity
System optimization:
- Maintain optimal air compressor output efficiency
- Monitor pneumatic system performance
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