Selecting proper rock drilling tools is vital to the operation of the mines. The two main streams are Mining Tricone Bit and DTH (Down-The-Hole) Drill Bit.
While DTH drilling bits perform excellently in small to medium-sized holes and extremely hard grounds, tricone bits maintain an irreplaceable position when drilling in large open-pit mining due to its unique design and superior compatibility.
What are Mining Tricone Bit and DTH Drill Bit?
Mining Tricone Bit: Driven by pulldown and rotation, it rolls on the hole bottom to break rock via crushing, impact and shearing.
DTH Drill Bit: Used in conjunction with a drilling hammer, it strikes rock directly through high-frequency impact energy.
Comparison
| Mining Tricone Bit | DTH Drill Bit | |
| Common Sizes | 152mm – 406mm Larger diameter means fewer holes and higher blasting efficiency. | 76mm – 203mm |
| Hole Deviation Rate | Extremely Low. The balanced cutting structures ensure superior verticality in various grounds. | High. Prone to hole deviation when facing complex formations such as variable hardness, fractured zones, or faults |
| Compatibility | Extremely soft to extremely hard rock. | Medium to extremely hard rock. |
| Service Life | Longer. Significantly reducing downtime caused by frequent bit changes. | Shorter. Parts, especially the piston, are sensitive to heat and lubrication. |
Conclusion: How to Make the Choice?
- If your mining project is related to homogeneous and hard rocks and pursues smaller diameters, DTH drill bit is a good choice.
- However, if you seek high output for large-scale operations, face variable rock hardness, and require large-diameter blasthole drilling, then Mining Tricone Bit is undoubtedly the best solution to ensure progress and reduce total drilling costs (TDC).
Looking for quality Mining Tricone Bits? We at DANV TOOLS can tailor tricone bits to help you maintain high efficiency in harsh drilling environments.