Product Specifications:
This 39mm U drill operates at a low speed range (700‑900 RPM) but accepts a wide feed rate (0.06‑0.10 mm/r), making it perfect for soft steel, cast iron, and non‑ferrous materials. The C40 shank provides maximum rigidity for large‑diameter drilling, and the 3D depth (117mm) is suitable for pump housings, valve bodies, and large gear blanks.
SPMG110408 inserts have a larger cutting geometry that improves chip breaking in gummy materials like low‑carbon steel or aluminum. Double helix cooling ensures effective chip evacuation at higher feed rates. This drill is a top choice for high‑volume aluminum machining because the low RPM reduces heat buildup and built‑up edge. For gray cast iron, the same geometry provides stable performance. Typical applications include automotive drivetrain components, industrial fans, and large molding bases. Customize with DLC coating for aluminum to achieve mirror finishes. Unlike solid carbide drills, this indexable U drill offers lower cost per hole and fast insert change. Upgrade your large‑hole drilling process with this versatile 39mm U drill.
Standard sizes shown above. Custom diameters (12–60 mm), drilling depths (2D‑5D), and shank types available. Request non‑standard sizes →
| Name: | Indexable U Drill | Material: | Solid Carbide/High Carbon Steel/Tool Steel |
| Flute: | 1-6 | HRC: | HRC45°,HRC50°,HRC55° |
| Insert: | SPMG SPGT | Length: | 2D 3D 4D 5D |
| Customization | OEM/ODM | Precision: | Finishing, Semi-Finishing, Roughing |
| Coolant | Yes | Package: | Inner Plastic Box, Carton Outside |
| Process Equipment : | CNC Tooling | Suitable For: | CNC Lathe Machine |
✅ Inserts can be customized separately.
We offer SPMG, WCMX, and other insert types with tailored coatings (TiN, TiAlN, AlCrN) and carbide grades for your specific material. Request non‑standard inserts →
