CSJ Crown Drill Bit,10D Drill Diameter Range 31.00-31.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

CSJ Crown Drill Bit (10D) – English Product Copy

1. Short Description

The CSJ Crown Drill Bit (10D) is a high-performance indexable insert drill designed for deep-hole processing with a drilling diameter range of 31.00mm to 31.99mm. Featuring an advanced internal coolant system and a secure front-locking/side-locking mechanism, it delivers exceptional stability, high-speed chip evacuation, and ultra-high efficiency for demanding industrial machining operations.

2. Product Introduction

The CSJ Crown Drill Bit (10D) represents a cutting-edge solution for deep-hole drilling challenges. Designed for high-speed machining up to 10 times the drill diameter (10D), this tool combines high rigidity with superior chip control.

Equipped with an internal cooling design, coolant flows directly to the cutting edge, effectively dissipating heat, extending tool life, and promoting smooth chip removal during continuous high-depth drilling. The front-locking mechanism with interchangeable crown heads allows quick, precise tip replacement without removing the tool body from the machine, dramatically reducing setup times and boosting production efficiency.

3. Technical Specifications

• Product Series: CSJ Crown Drill Bit Series

• Drilling Depth Ratio: 10D (Up to 10× Diameter)

• Drilling Diameter Range: Ø 31.00 mm – Ø 31.99 mm

• Locking Mechanism: Front-Locking / Side-Locking Drill Tip

• Cooling Method: Internal Through-Coolant System (Thru-Coolant)

• Tool Type: Indexable Crown / Head Exchangeable Drill

• Shank Type: Standard CNC Cylindrical Shank (with Flat/Flatted Design)

• Key Features: High Precision, Quick Tool Change, Excellent Chip Evacuation

4. Key Functions & Benefits

• Deep-Hole Precision Drilling (10D Depth): Efficiently drills deep holes up to 10D in length with minimal deflection, maintaining straightness and high accuracy.

• Effective Internal Cooling: Direct through-coolant channels cool the cutting zone rapidly, preventing thermal deformation of the workpiece and prolonging insert edge life.

• Quick-Change Front-Locking Design: Enables rapid tip/crown replacement directly on the machine, reducing machine downtime and lowering tool inventory costs.

• Smooth Chip Evacuation: Optimized flute geometry prevents chip clogging in deep holes, ensuring stable continuous machining at high speeds.

• High Efficiency & Cost Reduction: Delivers 2–3 times higher productivity compared to conventional solid carbide or standard drills while significantly reducing tooling cost per hole.

5. Applications & Industry Scenarios

• Target Industries:

  • Automotive & Transportation Manufacturing (engine blocks, transmission components)

  • Mold & Die Industry (deep cooling channel and ejector pin hole drilling)

  • Energy, Oil & Gas Equipment (flanges, heavy machinery components, pressure vessels)

  • General Precision Mechanical Engineering & Structural Metalworking

• Applicable Materials:

  • Carbon Steels & Alloy Steels

  • Stainless Steel & Heat-Resistant Alloys

  • Cast Iron (Ductile Iron, Gray Iron)

  • Aluminum & Non-Ferrous Metals

• Machining Platforms:

  • CNC Machining Centers (VMC / HMC)

  • CNC Lathes and Turning Centers

  • Automated Production Lines