CSJ Crown Drill Bit, 7D Drill Diameter Range 28.00-28.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

High-performance 7D indexable crown drill bit engineered for high-speed, deep-hole drilling. Features a front-locking body, side-locking tip, and internal coolant channels for superior stability and efficient chip evacuation.

Product Overview

The CSJ Crown Drill Bit is designed for heavy-duty, high-precision metal removal. Featuring a 7D drilling depth ratio (up to 7x diameter) and a front-locking structural design with side-locking crown tips, it ensures maximum stability, high rigid clamping, and rapid tip replacement without removing the tool body from the machine. Internal cooling holes feed coolant directly to the cutting edge, drastically reducing thermal wear and optimizing chip removal in deep-hole applications.

Product Parameters

Key Functions & Features

• Deep-Hole Precision: Capable of drilling high-aspect-ratio holes (7D) while maintaining tight tolerances and high straightness.

• Rapid Tip Replacement: Front/side-locking mechanism allows quick head changes, reducing downtime and increasing overall machining efficiency.

• Efficient Heat & Chip Management: Internal coolant passages flush chips out smoothly and protect the cutting edges from heat buildup.

• Cost Efficiency: Only the crown insert/tip needs replacement upon wear, preserving the durable drill body long-term.

Applications

• Machining Operations: High-speed deep-hole drilling, roughing, and semi-finishing operations on CNC lathes, milling machines, and machining centers.

• Target Industries: Heavy machinery manufacturing, automotive, aerospace, oil & gas equipment, structural steel processing, and mold/die fabrication.

• Workpiece Materials: Carbon steel, alloy steel, stainless steel, cast iron, and high-temperature alloys.