CSJ Crown Drill Bit, 7D Drill Diameter Range 25.00-25.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

$483.0000

Short Description

The CSJ Series 7D Crown Drill Bit is a high-performance indexable drilling tool designed for high-speed, deep-hole processing. Featuring a 25.00–25.99 mm drilling range, an advanced front-locking quick-change body, and internal coolant channels, it delivers exceptional chip evacuation, high precision, and maximum productivity for demanding industrial applications.

Product Overview

Engineered for deep-hole accuracy and rapid cycling, the CSJ 7D Crown Drill combines the stability of a solid body with the cost-efficiency of indexable side-locking inserts/tips. Its self-centering tip geometry reduces thrust force and eliminates the need for center drilling, while its high-rigidity 7D body withstands heavy cutting forces. The integrated internal cooling system cools the cutting zone directly, extending tool life and guaranteeing smooth chip flow even at deep drilling depths.

Key Specifications

Specification	Value / Feature
Model Series	CSJ Crown Drill Bit
Drilling Depth Ratio	7D (7x Diameter)
Drilling Diameter Range	25.00 mm – 25.99 mm
Locking Mechanism	Front-locking body with side-locking insert/tip
Coolant Type	Internal cooling (Thru-coolant design)
Insert / Tip Style	Indexable crown drill tip
Cutting Speed Capability	High-speed, heavy-feed capable

Product Functions & Benefits

High-Speed Deep-Hole Drilling: Effortlessly drills up to 7 times the tool diameter without compromising accuracy or surface finish.
Efficient Internal Cooling: Delivers high-pressure coolant directly to the cutting edge to reduce heat buildup and blast chips out of deep holes.
Quick-Change Front Locking: Allows fast insert replacements directly on the machine, reducing setup time and tool change overhead.
Self-Centering Geometry: Minimizes hole walk, enhances positional tolerance, and cuts down operating thrust forces.
Cost Efficiency: Swap only the indexable cutting tip rather than replacing the entire drill body, significantly lowering tooling cost per hole.

Application Scenarios

Automotive Industry: Crankshaft oil holes, engine block deep channels, and heavy transmission shaft machining.
Heavy Machinery & Aerospace: Structural steel frames, landing gear components, and hydraulic manifold blocks.
Mold & Die Manufacturing: Deep water jacket cooling lines and ejection pin holes in large die blocks.
Energy & Power Generation: Turbine casings, flange drilling, and heat exchanger tube sheets.
Compatible Materials: Suitable for alloy steels, carbon steels, stainless steel, cast iron, and high-temperature alloys.