CSJ Crown Drill Bit, 7D Drill Diameter Range 29.00-29.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

The CSJ Crown Drill Bit is a high-performance, indexable deep-hole drilling tool designed for $7\text{D}$ depth-to-diameter applications. Featuring a front-locking side-mount drill tip, internal cooling, and a precision-engineered drill body, it delivers exceptional chip clearance, tool stability, and high-efficiency machining in heavy-duty metal cutting.

Product Introduction

Engineered for deep-hole drilling demanding structural strength and superior surface finishes, the CSJ Crown Drill Bit simplifies insert replacement with its secure front-locking indexable tip mechanism. The integrated internal coolant channels directly deliver high-pressure fluid to the cutting zone, effectively lowering thermal load, reducing insert wear, and ensuring smooth chip evacuation during high-speed operations.

Product Parameters

Product Functions

• High-Speed Deep Hole Drilling: Capable of penetrating up to 7D depth without sacrificing hole straightness or drill body rigidity.

• Efficient Heat & Chip Management: Internal coolant passages force high-pressure fluid directly to the cutting edge, breaking chips into manageable sizes and preventing thermal deformation.

• Quick Insert Indexing: The front-locking side-mounted design allows operators to quickly index or replace drill tips directly on the machine, minimizing setup downtime.

• Vibration Suppression: Balanced body structure minimizes chatters during initial entry and deep penetration, increasing tool lifespan.

Application Scenarios

• Heavy Machinery & Power Generation: Deep-hole boring for turbines, pressure vessels, and large valve bodies.

• Automotive & Transportation: Machining engine blocks, crankshaft passages, and heavy drive axles.

• Aerospace & Defense: Precision deep-hole drilling in high-strength alloys and heat-resistant metals.

• General Engineering & Die/Mold Manufacturing: Production drilling of mold bases, hydraulic blocks, and structural steel components.