CSJ Crown Drill Bit, 5D 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

Product Overview

Short Description

The CSJ Crown Drill Bit (5D, Ø28.00–28.99mm) is a high-performance indexable insert drill designed for high-speed, deep-hole machining. Featuring an advanced front-locking mechanism and optimized internal cooling, it delivers exceptional chip evacuation, superior hole accuracy, and extended tool life in demanding industrial applications.

Product Introduction

Engineered for precision and high efficiency, the CSJ Crown Drill Bit series bridges the gap between solid carbide drills and traditional indexable drills. This 5D deep-hole drilling tool utilizes a specialized front-locking body paired with a side-locking drill tip (crown insert), ensuring maximum rigidity and seamless insert replacement directly on the machine. Equipped with dual internal coolant channels, it effectively reduces thermal buildup and forces chips out of deep cavities, making it an indispensable tool for heavy-duty manufacturing.

Technical Parameters

Core Features & Benefits (Product Action)

• High-Speed Deep-Hole Drilling: The 5D length-to-diameter ratio allows for deep penetration while maintaining excellent stability and minimal deflection at high RPMs.

• Internal Cooling System: Directs high-pressure coolant straight to the cutting edge, drastically lowering temperatures, reducing tool wear, and ensuring smooth chip evacuation.

• Secure Front-Locking Design: The robust front-locking body combined with a side-locking tip guarantees precise centering, high repeatability, and eliminates the risk of insert displacement under heavy loads.

• Cost-Efficient Indexable System: No need to regrind the entire drill; simply replace or index the crown tip, significantly reducing downtime and tooling costs.

Application Scenarios

The CSJ Crown Drill Bit is widely used across heavy industries requiring high-precision deep holes, including:

• Automotive Manufacturing: Drilling engine blocks, crankshafts, and heavy-duty transmission components.

• Aerospace & Defense: Machining high-strength alloy components and structural frames.

• Mold & Die Industry: Deep-hole drilling for mold bases, cooling lines, and ejector pin holes.

• General Engineering & Energy: Processing flanges, pressure vessels, and heavy machinery parts made of steel, cast iron, and stainless steel alloys.