CSJ Crown Drill Bit, 5D Drill Diameter Range 21.00-21.99, 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 (5D, Ø21.00–21.99mm) is a high-performance indexable insert drill engineered for high-speed, deep-hole machining. Featuring an innovative front-locking body, side-locking drill tip, and an advanced internal cooling system, it delivers exceptional stability, rapid chip evacuation, and prolonged tool life in demanding industrial applications.

Product Introduction

Take your deep-hole drilling efficiency to the next level with the CSJ Crown Drill Bit. Designed for precision and high-speed operations, this 5D indexable drill body bridges the gap between solid carbide drills and standard indexable drills.

Its cutting-edge front-locking mechanism paired with a side-locking drill tip ensures maximum rigidity and minimal runout, even at high feed rates. Equipped with dual internal cooling channels, it delivers coolant directly to the cutting edge, drastically reducing thermal stress and ensuring seamless chip evacuation. With an interchangeable crown insert design, this tool maximizes cost-efficiency by eliminating the need for regrinding.

Product Parameters

Parameter	Specification
Brand / Series	CSJ Crown Drill Series
Drill Depth Ratio	5D (5 x Diameter)
Diameter Range ($\emptyset$)	21.00 mm – 21.99 mm
Locking Type	Front-Locking Body / Side-Locking Drill Tip
Insert Type	Replaceable Crown / Indexable Drill Tip
Cooling System	Dual Internal Through-Coolant Channels
Shank Type	Side-Lock / Weldon Shank (standard high-rigidity fit)
Compatibility	High-speed CNC Machining Centers, Lathes

Product Key Functions (Product Features)

• 5D Deep-Hole Capability: Effortlessly drills depths up to 5 times the diameter while maintaining excellent hole straightness and surface finish.

• Front & Side Double-Locking System: The secure front-locking body and side-locking tip offer superior clamping force, preventing insert movement under heavy cutting loads.

• Advanced Internal Cooling: Through-body coolant holes plunge fluid directly into the cutting zone, lowering temperatures, preventing work hardening, and blasting chips out of deep holes.

• Cost-Efficient Indexable Design: Easily replace worn crown tips without removing the drill body from the machine, reducing downtime and tooling costs.

Application Scenarios

The CSJ Crown Drill Bit is optimized for heavy-duty, high-precision industries, including:

• Automotive Manufacturing: Drilling engine blocks, crankshafts, and heavy-duty powertrain components.

• Aerospace & Defense: High-speed machining of landing gears, structural frames, and heat-resistant alloys.

• Mold & Die Making: Creating deep coolant lines, core pins, and ejection holes in large mold bases.

• Heavy Machinery & Energy: Machining tube sheets, wind turbine hubs, and oil/gas pipeline flanges.

• Compatible Materials: Highly effective in Carbon Steel, Alloy Steel, Stainless Steel, Cast Iron, and Aluminum alloys.