CSJ Crown Drill Bit, 7D Drill Diameter Range 33.00-33.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

The CSJ Series 7D Crown Drill Bit features a front-locking body design with high-pressure internal cooling, engineered specifically for high-speed deep-hole drilling (up to 7xD). Designed for insert diameter ranges from 33.00 mm to 33.99 mm, this indexable side-locking drill tip system ensures superior rigidity, efficient chip evacuation, and quick tip replacement to minimize production downtime.

Product Overview

Engineered for heavy-duty industrial applications, the CSJ 7D Crown Drill Bit delivers exceptional performance in demanding deep-hole drilling operations. Its advanced front-locking mechanism securely anchors the replaceable side-locking crown tip, providing maximum dynamic stability and reducing vibration under high feed rates. Integrated internal coolant channels direct fluid precisely to the cutting edge, effectively controlling temperature, extending insert life, and driving swift chip removal from 7xD depth holes.

Product Specifications

• Product Series: CSJ Crown Drill Bit

• Drilling Depth Ratio: 7D (7 × Nominal Diameter)

• Diameter Range: 33.00 mm – 33.99 mm

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

• Cooling System: Internal Through-Coolant Channels

• Tool Type: Indexable Replaceable-Head Crown Drill

• Compatibility: CNC Lathes, Machining Centers (VMC/HMC), Gantry Milling Machines

Product Function

• High-Speed Deep Hole Penetration: Achieves accurate 7xD depth ratio drilling with minimal deflection or runout.

• Rapid Tool Changes: Front-locking side-pin setup allows head replacements directly on the machine without removing the tool body, cutting setup times significantly.

• Effective Thermal & Chip Control: Internal coolant flow flushes chips directly out of deep cavities while cooling the active cutting edge.

• Cost Efficiency: Replaceable crown tip design eliminates shank wear and drastically reduces tool inventory costs compared to solid carbide drills.

Applications & Industries

• Heavy Machinery: Valve bodies, flanges, manifold blocks, and structural steel connections.

• Energy & Power Generation: Wind turbine hubs, heat exchanger tube sheets, and oil/gas drill collars.

• Automotive & Aerospace: Transmission shafts, landing gear components, and large engine blocks.

• General Mold & Die Making: Deep ejector pin holes, cooling channels, and heavy mold bases.