CSJ Crown Drill Bit, 7D Drill Diameter Range 9.50-9.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

CSJ Crown Drill Bit (7D, Ø9.50–9.99 mm)

Product Short Description

The CSJ Crown Drill Bit is a premium, high-performance 7D indexable insert drill engineered for high-speed, deep-hole drilling applications. Featuring a secure front-locking body design and advanced internal cooling channels, it delivers exceptional stability, rapid chip evacuation, and prolonged tool life in demanding machining environments.

Product Introduction

Designed for precision and high efficiency, the CSJ Crown Drill Bit bridges the gap between solid carbide drills and traditional indexable drilling systems. This tool features a robust 7D length-to-diameter ratio, allowing it to tackle deep holes without sacrificing rigidity.

Its innovative front-locking mechanism ensures that the side-locking drill tip (crown insert) can be replaced quickly right inside the machine, drastically reducing downtime. Powered by a specialized internal cooling system, the drill delivers coolant directly to the cutting edges, neutralizing heat buildup and instantly flushing out chips to prevent jamming.

Product Parameters

Product Functions (Product Role)

• High-Speed Deep Hole Execution: Achieves stable drilling depths up to 7 times the diameter without requiring a pilot hole in most standard applications.

• Efficient Thermal Management: The dual internal coolant ports deliver high-pressure fluid directly to the cutting zone, lowering temperatures during high-speed friction.

• Rapid Chip Evacuation: Maximizes chip fragmentation and forces chips out of deep cavities smoothly, preventing tool breakage.

• Cost-Efficient Tooling: Eliminates the need for regrinding; when the crown tip wears out, simply swap the insert while keeping the heavy-duty drill body intact.

Application Scenarios

This drill bit is built for heavy-duty industrial manufacturing sectors, including:

• Automotive Manufacturing: Drilling deep oil galleries, crankshaft fluid passages, and engine block components.

• Aerospace & Defense: Machining high-strength alloy components requiring tight tolerances and deep bores.

• Mold & Die Industry: Creating long water cooling lines and ejector pin holes in hardened steel blocks.

• General Mechanical Engineering: Batch production of flanges, heavy machinery frames, and hydraulic cylinders.

• Compatible Materials: Optimized for Carbon Steel, Alloy Steel, Cast Iron, and Stainless Steel.