Product Overview

The L3060CF-22B Extended Gage Fluted Hard Rock Rotary Drilling Bullet Bit is a heavy-duty rock cutting tool designed for deep foundation drilling, hard rock excavation, and demanding rotary drilling applications.

Engineered for medium to hard geological formations, this rotary drilling bullet bit delivers excellent penetration performance in granite, limestone, sandstone, weathered rock, and abrasive mixed ground conditions.

The model designation represents its key design features:

• “L”indicates the Long Extended 85mm Gauge Length, providing improved cutting clearance and drilling stability.
• “CF”represents the Clearance Fluted body design with a reinforced Ø60mm protective shoulder, optimized for debris removal and holder protection.
• “22B”refers to the Ø22mm high-toughness tungsten carbide cutting tip, designed for high impact resistance and long service life.

With an extended 85mm gauge length and 145mm overall length, the L3060CF-22B improves drilling efficiency by reducing torque resistance, enhancing rock chip evacuation, and maintaining stable rotation performance during heavy-duty operations.

The reinforced Ø60mm fluted shoulder structure protects the tooth holder from abrasive wear while promoting smooth self-rotation and uniform cutting performance.

Technical Specifications (L3060CF-22B)

Key Features and Performance Advantages

1. Extended 85mm Gauge Length for Deep Drilling Performance

The optimized 85mm extended gauge length provides increased cutting clearance and improved drilling stability.

Compared with standard-length drilling teeth, the extended design helps:

• Reduce drilling torque and machine resistance
• Improve rock cutting efficiency
• Enhance debris flow around the cutting head
• Maintain stable drilling performance in deep holes
• Increase overall penetration rate

This design is especially suitable for demanding foundation projects requiring continuous drilling efficiency.

2. Clearance Fluted Body Design for Efficient Chip Removal

The longitudinal clearance flute structure creates optimized channels for rapid rock chip evacuation.

The improved debris removal system helps:

• Prevent mud ring formation
• Reduce material buildup around the tooth body
• Minimize body wash caused by abrasive particles
• Maintain consistent cutting performance
• Improve drilling speed in mixed formations

The fluted body design ensures smooth operation even in challenging geological conditions.

3. Ø60mm Reinforced Protective Shoulder for Holder Protection

The enlarged Ø60mm reinforced shoulder provides additional protection for the tooth holder and mounting system.

Key benefits:

• Reduces abrasive wear on the holder
• Improves structural support around the cutting area
• Extends tool replacement intervals
• Enhances reliability during high-load drilling operations

This reinforced structure is ideal for heavy-duty rotary drilling applications where wear resistance is critical.

4. High-Toughness Ø22mm Tungsten Carbide Insert

The premium Ø22mm tungsten carbide tip delivers an excellent balance of hardness, toughness, and impact resistance.

Performance advantages:

• Superior wear resistance
• Strong rock penetration capability
• Reduced carbide cracking risk
• Stable cutting performance under heavy loads
• Longer service life in abrasive formations

The carbide insert is optimized for drilling:

• Granite
• Limestone
• Sandstone
• Hard soil-rock mixtures
• Weathered rock layers

5. Forged 42CrMo Alloy Steel Body for Maximum Durability

Manufactured from high-strength 42CrMo forged alloy steel, the L3060CF-22B body provides excellent mechanical performance.

The heat-treated steel construction offers:

• High tensile strength
• Superior bending resistance
• Excellent fatigue performance
• Improved impact durability
• Long operational lifespan

This robust body design ensures reliable performance under demanding drilling conditions.

Applications and Compatible Equipment

The L3060CF-22B Extended Gage Rotary Drilling Bullet Bit is designed for professional foundation drilling and heavy construction applications.

Typical Applications:

• Deep foundation piling
• Bridge construction projects
• Highway and infrastructure engineering
• Hard rock excavation
• Underground construction
• Mixed geological drilling
• Large-scale civil engineering projects

Compatible Equipment:

Suitable for installation on:

• Rotary drilling rigs
• Rock core barrels
• Heavy-duty drilling buckets
• Cleaning buckets
• Foundation drilling attachments

Why Choose L3060CF-22B Extended Gage Rotary Drilling Tooth?

The L3060CF-22B combines extended reach, efficient debris removal, and reinforced wear protection to deliver reliable performance in difficult drilling environments.

Main advantages:

• Extended 85mm gauge length for improved drilling efficiency
• Fluted clearance design for faster chip evacuation
• Ø60mm protective shoulder for longer holder life
• Ø22mm tungsten carbide tip for powerful rock cutting
• Forged 42CrMo steel body for superior durability
• Self-rotating design for balanced wear distribution
• Designed for hard rock and deep foundation drilling applications

The L3060CF-22B Extended Gage Fluted Hard Rock Rotary Drilling Bullet Bit is an ideal solution for contractors seeking higher productivity, longer tool life, and consistent performance in challenging rock formations.