CSJ Crown Drill Bit, 4D Drill Diameter Range 36.00-36.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

Product Short Description

The CSJ Crown Drill Bit (4D) is a high-performance indexable insert drill engineered for high-speed, deep-hole drilling applications. Featuring a precise front-locking body design and integrated internal cooling channels, this side-locking drill tip system ensures maximum stability, efficient chip evacuation, and exceptional hole accuracy within the 36.00mm to 36.99mm diameter range.

Product Introduction

Take your deep-hole drilling operations to the next level with the CSJ Crown Drill Bit (4D). Designed to meet the rigorous demands of modern CNC machining, this tool features an innovative front-locking mechanism coupled with a side-locking drill tip structure. This combination guarantees exceptional rigidity and minimizes runout even during high-feed, high-speed operations.

With a 4D drilling depth capability and a specialized internal cooling system that delivers coolant directly to the cutting edge, it significantly reduces thermal stress, prevents chip clogging, and drastically extends tool life. It is the ultimate solution for heavy-duty metal cutting where precision and throughput are non-negotiable.

Product Parameters

Parameter	Specification
Product Series	CSJ Crown Drill Bit Series
Drilling Depth Ratio	4D (4 $\times$ Drill Diameter)
Drilling Diameter Range	$\phi$ 36.00mm – $\phi$ 36.99mm
Locking Mechanism	Front-Locking Body / Side-Locking Drill Tip
Cooling System	Thru-Tool Internal Cooling (Thru-Spindle Coolant compatible)
Insert Type	Indexable Crown Insert / Drill Tip
Shank Type	Side-Lock Shank (Weldon Shank) / Cylindrical Shank

Product Key Functions & Benefits (产品作用)

• High-Speed Deep-Hole Penetration: The 4D depth capability allows for fast, stable, and deep drilling without sacrificing geometric accuracy.

• Advanced Internal Cooling: Dual internal coolant holes flush chips out instantly from the cutting zone, lowering temperatures and preventing tool breakage.

• Front- & Side-Locking Stability: The robust front-locking body combined with a side-locking tip ensures zero insert movement under high torque and heavy axial loads.

• Cost-Efficient Indexable Design: No need to replace the entire drill body; simply replace or index the crown drill tip, significantly reducing tooling costs per hole.

Applications & Industries (应用场景)

Target Industries

• Heavy Machinery Manufacturing: Drilling large-diameter holes in structural frames, hydraulic cylinders, and heavy equipment parts.

• Automotive & Aerospace: High-precision machining of engine blocks, drivetrain components, and structural alloys.

• Die & Mold Making: Efficient core drilling and deep-pocket roughing in tough tool steels.

• Energy & Power Generation: Machining tube sheets, wind turbine components, and oil/gas drilling equipment.

Compatible Materials

• Steels: Carbon steel, alloy steel, and die steel ($HRC \le 40$).

• Stainless Steel: Austenitic and martensitic stainless steels.

• Cast Iron: Grey cast iron and ductile iron.

• High-Temperature Alloys: Titanium and nickel-based alloys (with optimized cutting parameters).