Crown Drills for Wind Power

HDK Crown Drills for Cast Iron 

HDP Crown Drills for Steel

Features of Halnn Crown Drill for Superior Hole Processing Precision

1. Low-Resistance Design for Enhanced Hole Accuracy

The unique S-curve cutting edge of the Crown Drill minimizes cutting resistance and suppresses vibrations during tool insertion, leading to improved machining precision.

2. Increased Core Thickness for Reduced Deformation

Compared to other manufacturers, the Crown Drill features a 20% thicker core, which reduces torsional deformation and enhances hole accuracy.

Cutting Conditions: Vc=120 m/min, f=0.25 mm/rev, Diameter ø14, D=5, Depth 45 mm, Wet, Material: S50C

Cutting Conditions: Vc=120 m/min, f=0.3 mm/rev, Diameter ø14, D=5, Depth 55 mm, Wet, Material: S50C

3. Superior Chip Evacuation in Deep Hole Machining

The extended auxiliary grooves (5D, 8D) on the shank ensure efficient chip evacuation, even in deep hole drilling applications.

Cutting Conditions: Vc=60 m/min, f=0.2 mm/rev, Diameter ø14, D=5, Depth 70 mm, Wet, Material: SUS304

4. Easy Drill Bit Replacement

The design of the Crown Drill allows for simple and quick drill bit changes, enhancing operational efficiency.