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Two Wing PDC Anchor Drill Bit for Hard Rock | Super Strength Mining Roof Bolt Bit

Standard Sizes & Threads

  • Bit Diameters: 25mm, 27mm, 28mm, 29mm, 30mm, 32mm, 36mm, 42mm
  • Common Connection Threads: M14×1.5, M16×2, M14×2, M12×2
  • Customization: Non-standard sizes and threads available upon request.

Core Advantages

  • ✔ High strength and wear resistance for extended service life
  • ✔ Excellent impact resistance reduces chipping risk
  • ✔ Stable drilling performance and high hole quality
  • ✔ Suitable for fractured and interlayered complex formations
  • ✔ Customizable specifications and structures

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Super Strong Hard Rock PDC Anchor Drill Bit | 8<F<12 Ultra-Hard Formations | Chenghui Drilling Tools

Super Strong Hard Rock PDC Anchor Drill Bit

For 8<F<12 Ultra-Hard Complex Formations · High Impact Resistance · Stable & Wear-Resistant · Efficient Small-Diameter Drilling
8<F<12 Ultra-Hard High Impact Resistance Spherical PDC Cutters Small Diameter 25-42mm

Product Overview

The Super Strong Hard Rock PDC Anchor Drill Bit features a two-wing full-face design, specifically developed for high-hardness, fractured, and complex rock formations. It is ideal for small-diameter rock drilling applications such as coal mine support and tunnel engineering.

Designed for formations with Protodyakonov coefficient 8<F<12, this bit utilizes premium spherical polycrystalline diamond compact (PDC) cutters to enhance impact resistance and wear resistance, ensuring stable drilling performance under complex working conditions.

Note: F is the Protodyakonov coefficient, a key indicator of rock hardness in the mining industry.

Technical Specifications

1️⃣ Product Type

Structure: Two-wing full-face

Grade: Super Strong

Cutter Type: Spherical PDC cutters

2️⃣ Applicable Rock Formations

GradeAdapted Formation
Super Strong8<F<12 high-hardness fractured rock

3️⃣ Standard Specifications

Bit Diameters: 25mm, 27mm, 28mm, 29mm, 30mm, 32mm, 36mm, 42mm

Common Connection Threads: M14×1.5, M16×2, M14×2, M12×2

👉 Non-standard customization available

PDC Cutter Type Comparison

To adapt to different rock structures, two types of diamond composite cutters are available:

🔹 Flat Face (Full-Face)

  • ✓ Fast penetration rate
  • ✓ High cutting efficiency
  • ✓ Suitable for intact uniform formations
  • ✓ Recommended for F≤12 formations

🔹 Spherical Face (Full-Face)

  • ✓ Strong impact resistance
  • ✓ Low risk of chipping
  • ✓ Suitable for fractured & complex formations
  • ✓ Recommended for 8<F<12 formations
👉 For complex rock formations, spherical cutters are the preferred choice.

Product Grade & Application Comparison

Product NameGradeCutter TypeAdapted Rock
PDC 2-Wing Anchor BitSuper StrongFull-face (Spherical)F≤12
PDC 2-Wing Anchor BitHigh StrengthFull-face (Flat)F≤12
PDC 2-Wing Anchor BitReinforcedHalf-faceF≤10
PDC 2-Wing Anchor BitStandardHalf-faceF≤8

Core Advantages

High wear resistance, long service life
Superior impact resistance, reduced chipping risk
Stable drilling, high borehole quality
Ideal for fractured and interbedded complex formations
Support for size and structure customization

Applications

Coal Mine Roadway Support Drilling
Engineering Tunnel Construction
Underground Support Anchoring
Small-Diameter Rock Drilling Projects

Customization Available

We offer custom diameters, thread types, and cutter configurations to meet your specific project requirements. Contact us for a tailored solution.

Our Manufacturing Excellence

From precision machining to final assembly — every drill bit is crafted in our ISO 9001 certified facility.

📬 Let’s talk about your hard rock drilling project

Whether you need a standard super strong hard rock PDC anchor bit or a fully customized solution, our engineering team is ready to support you with fast quotes and technical advice.

  • Response within 24h — guaranteed
  • 🔧 OEM / custom diameters, thread types, cutter configurations
  • 📦 Global shipping & export documentation
  • 📄 Free technical datasheet & performance report

Speak directly with Nancy

Senior Sales Engineer — 10+ years in PDC anchor bit solutions

📱 WhatsApp direct: +86 189 4499 5320

📧 Email address: Nancy@drillmfg.com

🕒 Business hours: Monday–Friday, 8:00–18:00 (GMT+8)

⏱️ Typical response time: 2–12 hours | Urgent projects: mark as “URGENT” in subject

Super Strong Hard Rock PDC Anchor Drill Bit – For 8<F<12 Ultra-Hard Formations

PDC anchor drill bit, hard rock drilling, small diameter anchor bit, coal mine support drilling, tunnel engineering, spherical PDC cutters, high impact resistance, wear-resistant, 25-42mm drill bit, Protodyakonov coefficient F<12, China PDC anchor bit manufacturer, custom rock drilling tools

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