Three-fold diameter external-cooling drill for difficult-to-machine materials

DA212321
DA212321
Integral cemented carbide three-fold diameter external-cooling drill for difficult-to-machine materials
The new H-edge geometry achieves exceptional chip-breaking performance, which can inhibit rapid wear of the drill bit. The unique surface smoothing treatment reduces cutting resistance and ensures excellent chip evacuation. A special flute design with shot-peened flute bottom further enhances chip removal capabilities.
Technical Diagram
Product Data
Number of cutting edges (Z)
2
Drill point angle
140°
Cutting edge diameter (d1)
3–20 mm
Slot length (L2)
20–28 mm
Shank length (L4)
28–36 mm
Overall length (L1)
54–66 mm
Shank diameter (d2)
4–6 mm
Cutting edge diameter tolerance
h7
Material (GRADE)
Cemented Carbide
COATING
PVD TIALSIN
Part weight (WT)
0.024kg
Release Date (ValFrom20)
2025/2/28
Cutting Parameters
Application Cases
2-flute standard round nose end mill
RHU110-2