CSJ Crown Drill Bit, 4D Drill Diameter Range 12.00-12.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

CSJ Crown Drill Bit (4D, Ø12.00–12.99mm)

Front-Locking High-Speed Indexable Drill Body with Internal Cooling

1. Short Description

The CSJ Crown Drill Bit (4D) is a premium high-speed, deep-hole indexable drill body designed for a diameter range of 12.00mm to 12.99mm. Featuring an innovative front-locking system and integrated internal cooling, this side-locking drill tip holder delivers maximum stability, efficient chip evacuation, and exceptional precision for demanding industrial machining.

2. Product Introduction

Engineered for excellence in deep-hole operations, the CSJ Crown Drill Bit bridges the gap between solid carbide drills and traditional indexable drills. Its 4D length-to-diameter ratio allows for deep penetration without sacrificing rigidity.

The standout feature is its front-locking design, which enables quick and secure insert replacement directly on the machine, drastically minimizing downtime. Combined with high-pressure internal cooling channels, it ensures the cutting edge stays cool while aggressively flushing out chips from the hole cavity, preventing tool breakage and extending tool life.

3. Product Specifications (Parameters)

4. Key Functions & Benefits (Product Action)

• High-Speed Deep Drilling: Easily achieves 4D depth with superior hole straightness and excellent surface finish.

• Efficient Chip Evacuation: Dual internal coolant holes deliver targeted fluid directly to the cutting zone, blasting chips out of deep holes.

• Rigid Front-Locking Mechanism: The side-locking crown tip stays securely anchored under high torque, preventing micro-vibrations.

• Cost-Efficient Indexable Design: No need to replace or regrind the whole drill body; simply swap out the crown insert when worn out, significantly lowering tooling costs.

5. Target Application Scenes

• Heavy Machinery Manufacturing: Drilling deep positioning and assembly holes in structural steel and castings.

• Automotive & Aerospace Industry: Precision drilling of engine blocks, manifolds, and high-strength alloy components.

• Mold & Die Making: Creating deep coolant lines and ejector pin holes in hardened mold steels.

• General Engineering: High-efficiency batch production on CNC machining centers, turning centers, and high-speed drilling machines.

• Compatible Materials: Ideal for Carbon Steel, Alloy Steel, Stainless Steel, Cast Iron, and High-Temperature Alloys.