CSJ Crown Drill Bit, 7D Drill Diameter Range 9.00-9.49, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

CSJ Crown Drill Bit (7D, ∅9.00–9.49mm)

High-Performance Indexable Deep-Hole Drilling System

Short Description

The CSJ Crown Drill Bit (7D) is a premium indexable insert drilling tool engineered for high-speed, deep-hole machining. Featuring a front-locking body design and advanced internal cooling channels, it delivers exceptional stability, superior chip evacuation, and extended tool life for hole diameters ranging from 9.00mm to 9.49mm.

Product Overview

Designed for maximum efficiency in demanding manufacturing environments, the CSJ Crown Drill Bit combines the structural rigidity of a solid carbide drill with the cost-effectiveness of an indexable system.

Its front-locking body mechanism ensures secure, rigid clamping of the side-locking drill tip, eliminating micro-vibrations even at high rotational speeds. Optimized for 7D depth-to-diameter ratios, this tool utilizes a specialized geometry and through-tool internal cooling to maximize productivity and achieve precise, repeatable hole tolerances without the need for frequent tool changes.

Product Specifications

Key Features & Product Benefits (Product Functions)

• Superior Chip Evacuation: Dual internal cooling channels deliver high-pressure coolant directly to the cutting edge, flushing out chips instantly and preventing heat buildup.

• High-Rigidity Front-Locking: The robust front-locking design paired with a side-locking tip provides maximum clamping force, minimizing runout and preventing tool deflection during deep-hole entry.

• Cost-Efficient Indexable Design: No need to regrind the entire drill body. Simply replace the precision crown tip when worn, significantly reducing tooling costs and downtime.

• High-Speed Stability: Engineered to maintain structural integrity under high feed rates ($V_f$) and cutting speeds ($V_c$).

Applications & Target Industries

This deep-hole drilling system is ideal for high-precision, high-volume production across various demanding sectors:

• Automotive Manufacturing: Drilling engine blocks, crankshafts, and transmission components.

• Aerospace Engineering: Machining high-strength alloys, structural components, and landing gear.

• Mold & Die Industry: Creating deep water cooling lines and ejector pin holes in mold bases.

• General Engineering: High-efficiency drilling in medium-to-hard steels, stainless steel, and cast iron.