CSJ Crown Drill Bit, 7D Drill Diameter Range 22.00-22.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

CSJ Crown Drill Bit (7D, Ø 22.00–22.99 mm)

Short Description

The CSJ 7D Crown Drill Bit is a high-performance indexable insert drill featuring a front-locking design and integrated through-spindle cooling. Built for high-speed, deep-hole applications within a 22.00–22.99 mm diameter range, it delivers exceptional chip evacuation and rigid side-locking tip stability for maximum productivity and hole accuracy.

Product Introduction

Engineered for demanding machining environments, the CSJ Crown Drill Bit redefines efficiency in deep-hole drilling. This tool utilizes an advanced indexable crown/insert system that allows for rapid tip replacement directly inside the machine, drastically reducing downtime and eliminating the need for regrinding.

With a substantial 7D (7x Diameter) drilling depth capability, it utilizes a highly secure front-locking body combined with a side-locking tip mechanism to combat high torsional forces. The internal cooling channels direct high-pressure coolant straight to the cutting edges, instantly cooling the workpiece and flushing out chips to ensure flawless surface finishes and extended tool life.

Product Parameters

Key Functions (Product Benefits)

• Eliminates Regrinding Downtime: The indexable “crown” tip structure allows operators to swap worn cutting edges in seconds without removing the tool body from the holder.

• Superior Chip Evacuation: Dual internal cooling channels deliver high-pressure coolant directly to the cutting zone, lifting chips out of deep 7D bores effortlessly and preventing chip clogging.

• High Rigidity & Minimal Runout: The combination of front-locking geometry and side-locking tip alignment absorbs heavy radial forces, keeping the drill perfectly centered.

• Lower Cost-Per-Hole: Crafted from high-strength tool steel, the drill body outlasts dozens of insert changes, making it highly cost-effective compared to solid carbide drills.

Application Scenarios

This 7D deep-hole drill is designed for heavy-duty CNC machining centers, gantry mills, and lathe setups.

• Heavy Machinery & Energy: Drilling deep structural bores in wind turbine hubs, heat exchangers, and heavy machinery frames.

• Automotive & Aerospace: High-speed processing of engine blocks, transmission shafts, and aerospace structural components.

• Mold & Die Manufacturing: Creating long water cooling lines and ejector pin holes in deep mold bases.

• Material Compatibility: Highly optimized for Carbon Steel, Alloy Steel ($1100\text{ N/mm}^2$ or less), Stainless Steel, Cast Iron, and Aluminum alloys.