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Sandvik CoroMill 390 vs Seco Turbo
CoroMill 390 and Seco Turbo are broad 90-degree shoulder-milling systems for shoulder, side, slot and cavity work. Both emphasize low cutting forces and versatile body/insert choices. Selection normally turns on the exact cutter diameter, insert size, pitch, overhang, coolant arrangement and the shop's existing grade inventory.
Side-by-side comparison
| Category | Sandvik CoroMill 390 | Seco Turbo |
|---|---|---|
| Primary role | Established square-shoulder platform for shoulder, side, face, slot and cavity milling. | High-performance square-shoulder family covering roughing through finishing across common materials. |
| Cutting behavior | Light-cutting geometries and low cutting forces support stability and long reach. | Positive geometries target free cutting, wall quality and productive shoulder milling. |
| Body assortment | Cylindrical, arbor, long-edge, lightweight and damped body options with several insert sizes. | Multiple diameters, pitches, shank/arbor styles and Turbo generations sized around operation and machine power. |
| Coolant and reach | Internal coolant is available on most cutters, including specialized long-reach bodies. | Coolant delivery and body style vary by cutter; exact Turbo body selection controls access and chip evacuation. |
| Inventory fit | Strong fit where Sandvik grades, interfaces and Silent Tools options are standardized. | Strong fit where Seco grades and shoulder-milling bodies are already established. |
Best fit by application
Sandvik CoroMill 390
- Choose CoroMill 390 when long-reach, damped/lightweight bodies or its established light-cutting platform solve the setup constraint.
- Its body assortment is particularly useful for cavities and overhang-sensitive work.
Seco Turbo
- Choose Seco Turbo when a specific Turbo cutter and Seco insert grade match the material, wall requirement and available machine power.
- It can be operationally preferable in a shop already standardized around Seco milling grades.
Selection notes
These are close architectural alternatives. Body configuration, local support and the exact insert geometry are more meaningful than a universal brand-level winner.
Variables to validate
- Cutter generation and insert size materially change both systems.
- Normalize diameter, pitch, radius, overhang, engagement and grade before comparing performance.