CSJ Crown Drill Bit, 7D 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

The CSJ Crown Drill Bit (7D) is a high-speed, high-performance indexable insert drill engineered for deep-hole machining. Featuring a front-locking body with internal cooling and side-locking drill tip geometry, it delivers maximum rigid clamping, efficient chip evacuation, and superior hole accuracy across a 36.00mm to 36.99mm diameter range.

Product Overview Designed to tackle demanding deep-hole operations up to 7 times its diameter (7D), the CSJ Crown Drill combines high rigidity with thermal control. Its innovative front-locking system allows for quick, high-precision insert changes directly on the machine, drastically reducing downtime. Coupled with high-pressure internal coolant channels, the bit maintains low cutting temperatures, flushes chips smoothly from deep cavities, and significantly extends tool life in heavy-duty industrial applications.

Product Specifications

• Product Series: CSJ Crown Drill Bit

• Drilling Depth Ratio: 7D (7× Diameter)

• Drill Diameter Range: 36.00mm – 36.99mm

• Locking Mechanism: Front-Locking Body / Side-Locking Drill Tip

• Cooling System: Internal Through-Coolant

• Tool Type: Indexable Insert / Crown Drill

• Clamping System: Flanged Shank / Side-Locking Design

Key Functions & Advantages

• High-Speed Deep-Hole Drilling: Easily achieves 7D depth capacity without loss of stability or hole straightness.

• Efficient Chip Evacuation: Internal cooling delivers lubricant directly to the cutting edge, breaking chips and flushing them out smoothly.

• Rapid Tool Swaps: Front-locking interface enables quick tip replacement without removing the tool holder from the spindle.

• Enhanced Tool Life & Surface Finish: Reduces thermal stress on cutting edges and minimizes chatter, yielding finer hole surface finishes.

Applications

• Heavy Machinery & Energy: Machining turbine components, valve bodies, power generation parts, and pressure vessels.

• Automotive & Commercial Vehicles: Deep-hole boring for engine blocks, drive shafts, heavy axle components, and hydraulic cylinders.

• Mold & Die Manufacturing: Drilling deep cooling channels and ejector pin holes in large mold bases.

• Aerospace & General Engineering: Precision deep drilling in structural steel, alloy steel, cast iron, and high-temperature alloys.