Home / Knowledge / Sandvik Coromant CoroMill 390 vs Guhring RF 100 Diver
Sandvik Coromant CoroMill 390 vs Guhring RF 100 Diver
Sandvik Coromant CoroMill 390 and Guhring RF 100 Diver are documented milling systems with different product architecture and application priorities. CoroMill 390 is a broad Sandvik Coromant indexable milling system for square-shoulder, profile, ramping, and related operations. Guhring RF 100 Diver is a multi-application solid-carbide end-mill family built for ramping, drilling, slotting, roughing, and finishing.
Side-by-side comparison
| Category | Sandvik Coromant CoroMill 390 | Guhring RF 100 Diver |
|---|---|---|
| System architecture | Official records distinguish cutter bodies such as size 07 and insert platforms such as 1704. | Official Series 6798 is a three-flute carbide RF 100 Diver with center cutting, a special drill face, Signum coating, and 41/43/45-degree unequal helix. |
| Documented application focus | Square-shoulder and edging operations using the correct cutter and insert size. | Ramping, helical entry, plunging, slotting, roughing, and finishing with one family. |
| Technical selection detail | Insert codes retain geometry and grade, including ML, PM, and other application-specific chipbreakers. | Series 6736 is a four-flute metric carbide family with center cutting, neck clearance, Signum nano-Si coating, right-hand cutting, HB Weldon-flat shank, and 36/37/38-degree unequal helix. |
| Primary documented constraint | CoroMill 390 spans multiple cutter and insert sizes that are not cross-compatible. | RF 100 Diver is not one interchangeable item; verify series, EDP number, diameter, flute count, corner geometry, reach, coating, and shank. |
| Manufacturer-guided selection | Capture body and insert ordering codes separately, including size, geometry, grade, corner radius, pitch, connection, and hand. | Store Guhring series, EDP number, and code number separately, then attach the current catalog page and cutting-data document to the operational product record. |
Best fit by application
Sandvik Coromant CoroMill 390
- Square-shoulder and edging operations using the correct cutter and insert size.
- Capture body and insert ordering codes separately, including size, geometry, grade, corner radius, pitch, connection, and hand.
Guhring RF 100 Diver
- Ramping, helical entry, plunging, slotting, roughing, and finishing with one family.
- Store Guhring series, EDP number, and code number separately, then attach the current catalog page and cutting-data document to the operational product record.
Selection notes
Use CoroMill 390 when its documented application focus and technical configuration match the operation more closely; use RF 100 Diver when its documented architecture and constraints provide the better fit.
Compare complete configured assemblies and current manufacturer data rather than treating either family name as one universal item.
Variables to validate
- CoroMill 390: CoroMill 390 spans multiple cutter and insert sizes that are not cross-compatible.
- RF 100 Diver: RF 100 Diver is not one interchangeable item; verify series, EDP number, diameter, flute count, corner geometry, reach, coating, and shank.
- Normalize diameter or cutter size, reach, interface, work material, machine conditions, coolant, and acceptance criteria before comparing performance or cost.
Official product references
We work to keep this information reliable, but specifications and availability can change. Verify critical details with the manufacturer through the official resources above.