Product Overview

The 3050F-22B Hard Rock Rotary Drilling Bullet Tooth is a high-performance rock cutting tooth designed for medium to hard rock formations, unweathered bedrock, limestone, and high-strength geological conditions.

Engineered for demanding foundation drilling and rotary excavation applications, the 3050F-22B features a large Ø22mm coarse-grain tungsten carbide insert that delivers excellent impact resistance, fracture toughness, and stable penetration performance.

Built with a standard Ø30mm shank system and Ø38mm step collar, this rotary drilling tooth features a Ø50mm streamlined head design, 75mm extended gauge length, and 135mm overall length.

The optimized cutting geometry reduces side friction, improves cutting efficiency, and enhances chip evacuation during drilling operations. Combined with a forged 42CrMo alloy steel body, the 3050F-22B provides reliable performance and extended service life in challenging rock conditions.

Designed for professional drilling contractors worldwide, this hard rock rotary drilling bullet tooth is ideal for bridge foundations, wind turbine projects, high-rise foundations, and heavy civil construction applications.

Technical Specifications

Key Features & Performance Advantages

1. Ø22mm High-Impact Tungsten Carbide Tip

The 3050F-22B features a premium Ø22mm coarse-grain tungsten carbide insert designed for hard rock penetration.

The enlarged carbide tip provides:

• Higher impact resistance
• Improved fracture toughness
• Greater cutting force
• Reduced carbide breakage

It performs reliably in:

• Limestone
• Granite
• Hard sandstone
• Unweathered bedrock
• High-strength rock formations

2. Optimized Ø50mm Streamlined Head Design

The streamlined Ø50mm head contour provides an ideal balance between strength and penetration efficiency.

Benefits include:

• Reduced side friction
• Faster rock cutting
• Improved drilling speed
• Lower torque requirements

The optimized geometry helps maintain efficient operation under continuous rotary drilling.

3. Extended 75mm Gauge Length

The 75mm extended gauge height improves cutting clearance and drilling stability.

Advantages include:

• Increased penetration depth
• Faster chip evacuation
• Reduced cutting resistance
• Improved drilling efficiency

This design is suitable for deep foundation and rock excavation projects.

4. Forged 42CrMo Alloy Steel Body

The tooth body is manufactured from high-strength 42CrMo alloy steel and precision heat-treated.

The forged structure provides:

• Excellent fatigue resistance
• High bending strength
• Superior torque resistance
• Long operating life

It ensures reliable performance under demanding drilling conditions.

5. 360° Self-Rotating & Self-Sharpening Performance

Designed for standard Ø30mm rotary drilling holders, the 3050F-22B allows smooth 360° rotation during operation.

The self-rotating design provides:

• Uniform wear distribution
• Continuous self-sharpening effect
• Stable cutting performance
• Extended tooth service life

Applications & Compatible Equipment

The 3050F-22B Hard Rock Rotary Drilling Bullet Tooth is widely used in professional foundation and rock drilling projects.

Typical Applications:

• Bridge pier foundations
• Wind turbine foundations
• High-rise building foundations
• Deep piling projects
• Rock excavation
• Hard ground drilling

Compatible Equipment:

Suitable for:

• Rotary drilling rigs
• Core barrels
• Rock drilling buckets
• Reaming tools
• Foundation drilling attachments

Why Choose 3050F-22B Hard Rock Rotary Drilling Tooth?

✔ Ø22mm large carbide tip for powerful rock penetration
✔ Designed for hard rock and high-strength formations
✔ Streamlined Ø50mm head reduces drilling resistance
✔ Forged 42CrMo steel body for excellent durability
✔ 75mm extended gauge length for efficient cutting clearance
✔ Smooth self-rotation for uniform wear
✔ Compatible with standard Ø30mm drilling holders