Built for hard and unstable geological formations, MECLEAD bolt-on tricone hole opener features replaceable cutters for fast and effortless maintenance. Combining a reinforced body with a high-performance roller bit, this HDD rock hole opener minimizes downtime and maximizes drilling efficiency in tough rock conditions.
MECLEAD welded hole opener drill bit is engineered for maximum structural integrity in hard rock formations like granite and shale. Built with secure roller bit to withstand extreme torque, it serves as a reliable hole opener drilling tool for stable, step-by-step borehole enlargement.
MECLEAD welded hole opener drill bit is engineered for maximum structural integrity in hard rock formations like granite and shale. Built with secure roller bit to withstand extreme torque, it serves as a reliable hole opener drilling tool for stable, step-by-step borehole enlargement.
• Replaceable roller bit for quick on-site maintenance
• Flexible configuration for different formations
• Consistent drilling performance over long projects
When to Choose Bolt-on Hole Opener
• Long HDD projects
• Mixed or unknown formations
• When minimizing downtime is critical
• Integrated structure for high strength and durability
• Excellent performance in heavy-duty drilling
• Stable operation in demanding formations
When to Choose Welded Hole Opener
• Short-term projects
• Stable formations
• When replacement is not a concern
Choosing the right hole opener becomes more challenging in hard rock and complex ground conditions.
For a detailed selection guide, read our article on
optimal HDD hole opener selection for hard rock and complex ground conditions, where we explain formation matching, cutter selection, and drilling strategies.
| OD Size | Roller Bit Size Recommended | Rollers No. Recommended |
|---|---|---|
| 8” (203mm) | 5-7/8” | 3 |
| 10” (254mm) | 6” | 3 |
| 12” (305mm) | 8-1/2” | 3 |
| 14” (356mm) | 8-1/2” | 3 |
| 16” (406mm) | 8-1/2” | 4 |
| 18” (457mm) | 8-1/2” | 5 |
| 20” (508mm) | 8-1/2” | 5 |
| 22” (559mm) | 8-1/2” | 6 |
| 24” (610mm) | 8-1/2” | 7 |
| 26” (660mm) | 12-1/4” | 5 |
| 28” (711mm) | 12-1/4” | 5 |
| 30” (762mm) | 12-1/4” | 6 |
| 32” (813mm) | 12-1/4” | 7 |
| 34” (864mm) | 12-1/4” | 7 |
| 36” (914mm) | 12-1/4” | 8 |
| 38” (965mm) | 12-1/4” | 8 |
| 40” (1016mm) | 12-1/4” | 9 |
With more than a decade of international trade experience, we understand the logistics, regulations, and technical standards of markets around the world. Our global expertise guarantees smooth cooperation and reliable delivery.
Each drilling tool undergoes strict quality inspection - from raw materials to final delivery. Our commitment to quality ensures that it maintains high performance and durability even under the most demanding drilling conditions.
With the ability to travel frequently and meet clients in person, we gain a deep understanding of on-site conditions and project requirements. This allows us to deliver precise, customized solutions that truly meet our clients’ needs.
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