CSJ Crown Drill Bit, 7D Drill Diameter Range 18.00-18.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

Here is a clear, professional product profile for your CSJ Crown Drill Bit.

Product Profile: CSJ Crown Drill Bit (7D)

Product Short Description

The CSJ Crown Drill Bit (7D) is a premium high-speed indexable insert drill engineered for deep-hole applications. Featuring a robust front-locking body and an advanced internal cooling system, it delivers exceptional stability, superior chip evacuation, and precision drilling across a diameter range of 18.00–18.99 mm.

Product Introduction

The CSJ Crown Drill Bit sets a new standard for high-efficiency deep-hole drilling up to 7 times the drill diameter ($7\text{D}$). Designed with a unique front-locking body and a side-locking drill tip, this system ensures maximum rigidity and minimal runout under high torque. Its state-of-the-art internal cooling channels deliver coolant directly to the cutting edge, drastically reducing thermal wear and extending tool life. By using indexable crown inserts, it eliminates the need for regrinding, significantly lowering operating costs and machine downtime.

Product Parameters

Product Function (Product Action)

• High-Speed Deep Drilling: Easily achieves stable $7\text{D}$ depth ratios without sacrificing speed or precision.

• Thermal Regulation: Direct internal coolant delivery rapidly dissipates heat at the cutting zone, protecting both the tool body and the workpiece.

• Rigid Insert Clamping: The dual action of the front-locking body and side-locking tip prevents insert movement, ensuring precise hole geometry and excellent surface finish.

• Seamless Chip Evacuation: Optimized flute geometry combined with internal coolant pressure forces chips out smoothly, preventing clogging and breakage.

Application Scenarios

This industrial-grade drill bit is ideal for heavy-duty manufacturing environments that require deep precision holes, including:

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

• Aerospace & Defense: High-precision deep-hole boring in tough alloys and structural components.

• Mold & Die Making: Creating deep ejector pin holes and complex internal cooling fluid lines in large molds.

• Heavy Machinery & Energy: Machining flanges, pressure vessels, and wind turbine components.

• Compatible Materials: Optimized for carbon steel, alloy steel, stainless steel, cast iron, and high-temperature alloys.