CSJ Crown Drill Bit, 4D Drill Diameter Range 38.00-38.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

Product Description

The CSJ Crown Drill Bit (4D, Ø38.00–38.99mm) is a high-performance, front-locking indexable insert drill engineered for high-speed, deep-hole drilling applications. Featuring an advanced internal cooling system and a secure side-locking drill tip, this tool delivers exceptional chip evacuation, superior hole accuracy, and extended tool life in demanding industrial environments.

Product Overview

Designed for maximum efficiency and rigidity, the CSJ Crown Drill Bit bridges the gap between solid carbide drills and standard indexable drills. Its 4D drilling depth capability allows it to handle deep-hole operations with ease, while the front-locking design ensures quick and precise insert replacement directly on the machine, minimizing downtime. Supported by internal coolant channels, it directs fluid straight to the cutting edge to effectively lower temperatures and flush out chips, preventing work-hardening and tool wear.

Technical Parameters

Parameter	Specification
Brand / Series	CSJ Crown Drill Bit
Drilling Depth Ratio	4D (4 $\times$ Diameter)
Diameter Range	Ø38.00 mm – Ø38.99 mm
Locking Mechanism	Front-Locking Body / Side-Locking Drill Tip
Cooling System	Thru-Spindle Internal Cooling (Thru-Coolant)
Insert Type	Indexable / Replaceable Crown Insert

Product Functions & Benefits

Efficient Deep-Hole Drilling: The 4D length-to-diameter ratio enables stable, high-speed deep-hole machining without compromising rigidity.
Superior Thermal Management: Dual internal cooling channels deliver high-pressure coolant directly to the cutting zone, dramatically reducing heat buildup.
Rapid Tool Changes: The front-locking mechanism allows operators to change the drill tip quickly without removing the entire tool body from the holder.
Enhanced Stability & Precision: The side-locking drill tip configuration ensures maximum clamping force, eliminating micro-vibrations for perfect hole cylindricity.

Applications & Target Industries

This indexable drill is ideal for heavy-duty metal cutting operations requiring large-diameter, deep-hole drilling across various sectors:

Heavy Machinery & Automotive: Machining engine blocks, large flanges, and structural frames.
Oil & Gas / Energy: Drilling specialized components, valves, and high-pressure piping.
Mold & Die Manufacturing: Creating deep core cooling channels in massive mold bases.
Suitable Materials: Optimized for medium-to-high carbon steels, alloy steels, stainless steel, and cast iron.