CSJ Crown Drill Bit, 4D 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 Short Description

The CSJ Crown Drill Bit (4D) is a high-performance, front-locking indexable insert drill engineered for high-speed, deep-hole drilling. Featuring an internal cooling system and a side-locking drill tip, it delivers exceptional chip evacuation, maximum rigidity, and superior hole accuracy for demanding industrial machining.

Product Introduction

Designed for heavy-duty metalworking, the CSJ Crown Drill Bit series redefines efficiency in deep-hole drilling. This 4D-depth drill body accommodates a diameter range of 28.00–28.99 mm and features an advanced front-locking mechanism paired with a side-locking drill tip. This dual-security design allows for rapid insert replacement directly on the machine, drastically minimizing downtime. Equipped with dual internal coolant channels, it pumps fluid directly to the cutting edge, effectively reducing thermal stress and ensuring seamless chip evacuation during high-speed operations.

Product Specifications (Parameters)

Key Functions & Product Benefits (Product Role)

• High-Speed Deep Drilling: Easily achieves 4D drilling depths at high RPMs without sacrificing stability or drifting off-center.

• Superior Thermal Control: Internal cooling channels deliver coolant straight to the cutting zone, extending tool life and preventing workpiece deformation.

• Rapid Insert Changing: The front-locking and side-locking architecture allows users to index or replace the drill tip quickly without removing the entire tool body from the holder.

• Excellent Chip Evacuation: Optimized flute geometry paired with high-pressure internal cooling flushes out chips effortlessly, preventing clogging and tool breakage.

Application Scenarios

The CSJ Crown Drill Bit is highly versatile and optimized for heavy industries requiring precise, large-diameter deep holes:

• Automotive & Aerospace: Machining engine blocks, transmission components, and structural frames.

• Heavy Machinery & Energy: Drilling tube sheets for heat exchangers, wind turbine components, and oil/gas valves.

• Mold & Die Manufacturing: Creating deep core cooling lines and ejector pin holes in large molds.

• Compatible Materials: Highly effective in carbon steel, alloy steel, stainless steel, cast iron, and high-temperature alloys.

• Machining Centers: Ideal for CNC Milling Machines, Lathes with live tooling, and Boring Mills.