CSJ Crown Drill Bit, 5D Drill Diameter Range 39.00-39.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

 Product Overview

Short Description

The CSJ Crown Drill Bit (5D, 39.00–39.99mm) is a high-performance indexable insert drill engineered for high-speed, deep-hole machining. Featuring an innovative front-locking body and an internal cooling system, this side-locking drill tip ensures exceptional stability, rapid chip evacuation, and superior precision for demanding industrial drilling applications.

Product Introduction

Designed to meet the rigorous demands of modern manufacturing, the CSJ Crown Drill Bit delivers a perfect blend of efficiency and longevity. Its 5D drilling depth capacity combined with a robust front-locking mechanism eliminates vibration, allowing for high-speed penetration without sacrificing hole accuracy. Equipped with advanced internal cooling channels, it delivers coolant directly to the cutting edge, drastically reducing thermal wear and optimizing chip evacuation in deep cavities. The interchangeable crown/insert design minimizes downtime, making it a cost-effective powerhouse for heavy-duty operations.

 Product Functions & Benefits

• High-Speed Deep Hole Drilling: Effortlessly achieves a 5D depth-to-diameter ratio with maximum stability.

• Advanced Internal Cooling: Dual internal coolant holes flush out chips instantly and lower cutting temperatures, significantly extending tool life.

• Front-Locking & Side-Locking Design: Secures the drill tip firmly to withstand high torque, ensuring excellent concentricity and surface finish.

• Indexable Cost Efficiency: Eliminates the need for regrinding; simply replace the crown insert to maintain peak performance, reducing operational costs.

 Technical Parameters

Parameter	Specification
Brand / Series	CSJ Crown Drill Bit
Drilling Depth Ratio	5D (5 x Diameter)
Diameter Range	$\phi$ 39.00mm – $\phi$ 39.99mm
Locking Mechanism	Front-Locking Body / Side-Locking Drill Tip
Cooling System	Thru-Tool Internal Cooling (Oil/Coolant Holes)
Insert Type	Indexable Crown Insert
Shank Type	Side-Lock Weldon Shank / Round Shank (Standard Industrial)

 Target Applications & Industries

The CSJ 5D Crown Drill is highly versatile and optimized for drilling medium-to-large diameter holes in carbon steel, alloy steel, cast iron, and stainless steel.

Key Application Scenarios:

• Mold & Die Manufacturing: Drilling deep core cooling lines and ejector pin holes.

• Heavy Machinery & Automotive: Processing large engine blocks, transmission components, and structural frames.

• Energy & Power Generation: Machining tube sheets, heat exchangers, and wind turbine components.

• Aerospace & Shipbuilding: High-efficiency structural hole making in tough, high-strength alloys.