Product Overview

The 3050N8-19 Wear-Resistant Hardfaced Rotary Drilling Bullet Tooth is an advanced foundation drilling wear part engineered for highly abrasive sandstone, weathered granite, gravel formations, and hard rock foundation applications.

Also known as an N8 hardfaced piling tooth or reinforced rotary drilling tooth, the 3050N8-19 features a unique 8-stripe hardfacing protection design around the conical head, providing superior resistance against steel body erosion and abrasive wear.

Built with a standard Ø30mm shank system and a reinforced Ø38mm step collar, this rotary drilling tooth features a maximum head diameter of Ø50mm, a 70mm gauge length, and an overall length of 130mm.

Equipped with a high-toughness Ø19mm tungsten carbide insert and a forged 42CrMo alloy steel body, the 3050N8-19 delivers excellent impact resistance, stable penetration performance, and extended service life in demanding drilling conditions.

Designed for professional foundation drilling contractors worldwide, this hardfaced rotary drilling bullet tooth is ideal for bridge piling, wind farm foundations, deep foundation engineering, and heavy civil construction projects.

Technical Specifications

Key Features & Performance Advantages

1. 8-Stripe Hardfacing Armour Protection

The 3050N8-19 features eight longitudinal hardfacing wear-resistant stripes strategically welded around the conical head.

This reinforced protection layer creates an effective barrier against:

• Steel body wash
• Abrasive rock cutting erosion
• Premature body wear
• Reduced tooth performance

The 8-stripe hardfacing design significantly improves wear resistance and maintains stable drilling efficiency in highly abrasive formations.

2. Optimized 70mm Gauge Length Design

The 70mm gauge length with 130mm overall length provides an excellent balance between cutting performance and structural strength.

Advantages include:

• Improved drilling stability
• Higher bending resistance
• Better impact absorption
• Reduced risk of tooth deformation

This design is suitable for continuous rotary drilling operations under heavy loads.

3. High-Toughness Ø19mm Tungsten Carbide Insert

Equipped with a premium Ø19mm tungsten carbide tip, the 3050N8-19 provides reliable cutting performance in challenging geological conditions.

The optimized carbide grade delivers:

• High impact toughness
• Excellent wear resistance
• Strong fracture resistance
• Reduced carbide chipping

It maintains effective cutting performance in:

• Sandstone
• Weathered granite
• Gravel layers
• Hard rock formations

4. Forged 42CrMo Alloy Steel Body

The tooth body is manufactured from high-strength forged 42CrMo alloy steel and precision heat-treated to HRC 48-52.

The robust steel structure provides:

• High shear strength
• Excellent bending resistance
• Strong fatigue durability
• Reliable performance under high torque loads

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

Designed for standard Ø30mm rotary drilling tooth holders, the 3050N8-19 allows smooth 360° rotation during operation.

The self-rotating design ensures:

• Uniform carbide wear
• Continuous self-sharpening effect
• Stable penetration speed
• Extended tooth service life

Applications & Compatible Equipment

The 3050N8-19 Wear-Resistant Rotary Drilling Bullet Tooth is widely used in foundation construction and hard ground drilling applications.

Typical Applications:

• Bridge foundation piling
• Wind turbine foundation projects
• Deep foundation engineering
• Large-scale civil construction
• Hard rock drilling
• Abrasive soil excavation

Compatible Equipment:

Suitable for:

• Rotary drilling rigs
• Rock drilling buckets
• Core barrels
• Rock augers
• Reamers
• Foundation drilling attachments

Why Choose 3050N8-19 Rotary Drilling Bullet Tooth?

✔ 8-stripe hardfacing protection for maximum wear resistance
✔ Designed for abrasive rock and harsh geological conditions
✔ Premium Ø19mm tungsten carbide cutting performance
✔ Forged 42CrMo steel body with high strength and durability
✔ Reduced steel wash and extended service intervals
✔ Stable drilling performance under high torque conditions
✔ Compatible with standard Ø30mm drilling holders