CSJ Crown Drill Bit, 7D 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 (7D, Ø12.00–12.99 mm)

Front-Locking Indexable Deep-Hole Drill with Internal Cooling

Short Description

The CSJ Crown Drill Bit (7D) is a high-performance, indexable insert deep-hole drill engineered for high-speed precision machining. Featuring a robust front-locking body, a versatile side-locking drill tip, and an integrated internal cooling system, this drill excels at delivering chip evacuation and superior surface finish in deep-hole applications up to 7 times the drill diameter (7D) within the 12.00–12.99 mm range.

Product Overview

Designed for modern CNC machining centers, the CSJ Crown Drill Bit bridges the gap between solid carbide drills and traditional indexable drills.

• Rigid Front-Locking Body: The advanced front-locking mechanism ensures maximum clamping rigidity, minimal runout, and high structural stability, even under extreme axial cutting forces.

• 7D Deep-Hole Capability: Effortlessly drills holes up to seven times its diameter without sacrificing accuracy or tool life.

• Dual Cooling Channels: Internal coolant channels deliver high-pressure fluid directly to the cutting edges, drastically lowering temperatures and rapidly flushing chips out of deep cavities.

• Interchangeable Side-Locking Crown Tips: Features a secure side-locking mechanism for quick, on-machine insert replacement. Swap worn tips in seconds without losing setup reference points, reducing downtime.

Product Specifications (Parameters)

Key Functions (Product Roles)

• High-Speed Chip Evacuation: Dual internal cooling channels prevent chip nesting, ensuring continuous, uninterrupted deep drilling.

• Cost-Efficient Tooling: Instead of discarding the entire tool when worn, you only replace the crown insert, significantly reducing your cost-per-hole.

• High-Precision Hole Quality: The high rigidity of the front-locking body minimizes vibration, yielding excellent hole cylindricity, alignment, and dimensional tolerance.

Applications & Industry Scenarios

This 7D crown drill is ideal for heavy-duty, high-production environments requiring precise, deep-hole drilling:

• Automotive Industry: Machining engine blocks, crankshaft oil holes, and transmission shafts.

• Mold & Die Manufacturing: Drilling deep cooling/water lines in large mold bases.

• Aerospace & Defense: Drilling structural components and high-strength alloy parts.

• Heavy Machinery: Production of hydraulic cylinders, valves, and heavy gear shafts.