CSJ Crown Drill Bit, 7D Drill Diameter Range 16.00-16.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

CSJ Crown Drill Bit (7D) | 16.00–16.99mm Range | Front-Locking Body with Internal Cooling | High-Speed Deep-Hole Indexable Insert & Side-Locking Drill Tip

Short Description

Engineered for high-efficiency machining, the CSJ Crown Drill Bit (7D) features a specialized front-locking body with an advanced internal cooling system. Designed for a 16.00–16.99mm diameter range, this indexable insert drill utilizes a secure side-locking tip mechanism to ensure maximum stability, rapid chip evacuation, and exceptional precision during high-speed, deep-hole drilling operations.

Product Features & Overview

• High-Speed Deep-Hole Drilling (7D): Designed with a 7D (7 times the diameter) length-to-diameter ratio, allowing for stable, high-speed deep-hole penetration without compromising on accuracy.

• Front-Locking Body & Side-Locking Tip: The unique front-locking mechanism combined with a side-locking insert design guarantees rapid tip replacement, exceptional clamping rigidity, and zero radial runout under high torque.

• Optimized Internal Cooling System: Dual internal coolant channels deliver high-pressure fluid directly to the cutting edges. This drastically lowers cutting temperatures, prevents thermal deformation, and forces chips out of deep holes effortlessly.

• Indexable Efficiency: Eliminates the need for regrinding. When the crown insert wears out, simply swap the tip on the machine, minimizing downtime and maximizing productivity.

Technical Parameters

Product Functions (How it Works)

• Friction & Heat Reduction: The pressurized internal coolant pathways wash away frictional heat, significantly extending the lifespan of both the tool body and the carbide insert.

• Force Balance & Stability: The crown-style design distributes cutting forces symmetrically, preventing drill deflection (wandering) and ensuring excellent hole straightness and surface finish.

• Quick-Change Tooling: The side-locking mechanism allows operators to change the crown tip in seconds without removing the drill body from the machine spindle.

Applications & Target Industries

This high-performance drill is built for heavy-duty, high-precision manufacturing.

Commonly Used In:

• Automotive Manufacturing: Drilling engine blocks, crankshafts, and transmission shafts.

• Aerospace & Defense: Machining high-strength structural components and landing gears.

• Heavy Machinery & Energy: Processing tube sheets, heat exchangers, wind turbine components, and pressure vessels.

• General Die & Mold Making: Deep-hole drilling for cooling lines in large injection molds.

Compatible Materials:

• Carbon Steels & Alloy Steels

• Stainless Steels (300/400 series)

• Cast Iron & Ductile Iron

• High-Temperature Alloys (Titanium/Inconel)