Cutting tool・tooling

NAKASEIKI

Half-Moon Drill (HD)
🔹 Type: HD
🔹 Features: Straight edge or stepped edge
🔹 Diameter Range: d1 ~ d20
🔹 Cutting Edge & Overall Length: 45 × 100 mm (cutting edge × total length)
🛠️ High Precision – Superior Performance
Half-moon geometry reduces friction and improves chip evacuation during drilling.
Straight and stepped edges allow for standard or stepped hole machining in a single pass.
Made from ultra-hard alloy or ultra-fine grain carbide depending on the workpiece material, offering excellent durability and wear resistance.
Micron-level accuracy ensures precise dimensions and concentricity.
#2000 diamond-polished surface provides high smoothness and minimizes edge chipping.
🧰 Ordering Specifications
When placing an order, please specify blade diameter ΦD (including tolerance).
Select type and quantity according to the provided standard chart.
In addition to standard sizes, custom manufacturing is available upon request.