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Highlights at a glance
YG11C carbide tip (HRA≥89.5, TRS≥2200MPa) significantly extends service life in hard rock formations (UCS 80-120MPa), reducing your cost-per-hole and unplanned downtime.
Fully forged 42CrMo alloy steel body (tensile ≥1080MPa, brazing bond ≥25kN) the carbide tip stays locked and the body won't fracture, even under extreme impact loads.
Conical round shank rotates 360° freely (tolerance ±0.05mm) self-sharpening through even wear, fully interchangeable with BAUER / SANY / XCMG OEM holders for consistent penetration rate without extra fuel cost.
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About this supplier
Chongqing Dunrui Technology Co., Ltd. (Dunrui Technology) is a professional supplier specializing in the R&D and manufacturing of cutter accessories for TBM tunneling machinery, including roadheaders, shield machines, and pipe jacking machines, as well as picks and cutters for mining tunneling and rotary drilling.Leveraging a modern 20,000㎡ manufacturing base in Shandong and a team of over 200 industry experts, the company is deeply focused on TBM disc cutters, pipe jacking machine cutters, and various types of hard rock picks (for coal mining and rotary drilling).We consistently adhere to technological innovation as our core value and have obtained ISO9001 international quality management system certification.With a rigorous QC inspection process and strong R&D design capabilities, Dunrui Technology is committed to providing the global infrastructure construction industry with industrial solutions that offer greater durability and higher adaptability, ensuring construction efficiency even under extremely complex geological conditions.
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FAQs
Are you a direct manufacturer or a trading company?
We are a professional manufacturer specializing in TBM cutters and mining tools. With our own advanced CNC machining facility and specialized heat treatment lines, we maintain full control over product quality and production schedules.
What is the typical lead time for an order?
The regular model inventory products can generally be dispatched within 2 to 4 days. The lead time for custom-made and disc cutter series products is generally 10 to 20 days
Can you manufacture tools based on our specific drawings or samples?
Absolutely. We offer comprehensive OEM/ODM services. Our engineering team can optimize tool geometry and carbide grades based on your specific geological conditions (e.g., granite, limestone, or mixed ground).
Carbide tips keep detaching when drilling highly abrasive sandstone (UCS > 70 MPa). How do you solve this?
We apply 100% vacuum brazing with zero micro-voids to secure our premium YG11C/YG13C carbide tips.This achieves a superior shear strength of 60-90 MPa (30% higher than traditional induction welding), guaranteeing up to 50 meters of drilling without tip detachment to minimize your downtime.
Hard-to-soft rock transitions often cause shank breakage on our bullet teeth. How do you prevent this?
Our teeth bodies are forged from premium 42CrMo, precisely quenched and tempered to create a strict hardness gradient: HRC 58-62 at the head for wear resistance, and HRC 28-32 at the shank core for high impact toughness. This structural gradient absorbs violent torque shocks, preventing catastrophic shear failure in complex geologies.
