Product Overview

The 30606L-22 Wear-Resistant Rotary Drilling Bullet Tooth is a high-performance foundation drilling wear part designed for abrasive geological conditions, hard soil, cobble layers, and demanding rotary drilling applications.

As part of the Wear-Resistant Rotary Drilling Teeth series, the 30606L-22 combines an enlarged Ø60mm reinforced head structure, advanced circumferential hardfacing protection, and a large-diameter tungsten carbide insert to achieve excellent wear resistance and extended service life.

Built with a standard Ø30mm shank system and Ø38mm step collar, this rotary drilling tooth features a 75mm gauge length and 135mm overall length, providing improved cutting clearance and stable drilling performance.

The tooth is equipped with an upgraded Ø22mm coarse-grain tungsten carbide insert, delivering enhanced impact resistance and a larger brazing surface area. Combined with circumferential hardfacing rings around the conical head, the 30606L-22 effectively reduces steel body wash, abrasive wear, and premature tooth replacement.

Manufactured from drop-forged 42CrMo alloy steel, this wear-resistant rotary drilling bullet tooth provides reliable performance for foundation piling, bridge construction, wind turbine foundations, and other civil engineering applications.

Technical Specifications

Key Features & Performance Advantages

1. Ø60mm Reinforced Wear-Resistant Head Design

The enlarged Ø60mm head structure provides additional steel support around the carbide insert area.

This reinforced design improves:

• Wear resistance
• Structural stability
• Carbide seat protection
• Resistance against abrasive body erosion

The wide head design helps maintain consistent drilling performance during long operating cycles.

2. Ø22mm High-Performance Tungsten Carbide Insert

The upgraded Ø22mm tungsten carbide tip provides a larger cutting surface and increased carbide volume compared with smaller drilling teeth.

Advantages include:

• Higher impact resistance
• Improved wear durability
• Stronger carbide retention
• Longer service intervals

The coarse-grain carbide structure provides reliable performance in:

• Abrasive rock
• Gravel layers
• Weathered formations
• Hard soil conditions

3. Circumferential Hardfacing Wear Protection

The key feature of the 30606L-22 is the circumferential hardfacing ring protection applied around the conical head.

The wear-resistant overlay creates a protective barrier against:

• Steel body wash
• Abrasive cutting erosion
• Carbide seat wear
• Premature tooth failure

This design significantly extends service life in abrasive drilling environments.

4. Optimized 75mm Gauge Length Design

The 75mm gauge length with 135mm total length provides an ideal balance between cutting clearance and structural durability.

Benefits include:

• Faster chip evacuation
• Reduced cutting resistance
• Improved drilling efficiency
• Stable operation in continuous drilling

5. Forged 42CrMo Steel Body & 360° Self-Rotation

Manufactured from drop-forged 42CrMo alloy steel and precision heat-treated to HRC 48-52, the tooth body provides excellent mechanical strength.

The self-rotating design inside standard Ø30mm holders ensures:

• Uniform wear distribution
• Self-sharpening cutting action
• Lower drilling resistance
• Extended operating life

Applications & Compatible Equipment

The 30606L-22 Wear-Resistant Rotary Drilling Bullet Tooth is designed for professional foundation drilling and construction applications.

Typical Applications:

• Bridge foundation piling
• Offshore wind turbine foundations
• Railway infrastructure projects
• Large-diameter bored piles
• Deep foundation engineering
• Abrasive soil and rock excavation

Compatible Equipment:

Suitable for:

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

Why Choose 30606L-22 Wear-Resistant Rotary Drilling Tooth?

✔ Ø60mm reinforced head for improved wear protection
✔ Ø22mm tungsten carbide insert for longer service life
✔ Circumferential hardfacing rings against steel wash
✔ Forged 42CrMo alloy steel body for durability
✔ Designed for abrasive drilling conditions
✔ Reduced maintenance frequency and operating costs
✔ Compatible with standard Ø30mm rotary drilling holders