CoroMill® 390 is your go-to cutter—a highly versatile tool capable of milling a wide variety of component features across diverse materials. With a broad selection of inserts, CoroMill 390 delivers excellent chip control, produces clean corner radii, and supports varying cutting depths. It’s engineered to mill almost any shape your application requires. This high-performance milling platform enables numerous operations with one tool, reducing tool changes, shortening cycle times, and streamlining inventory. Whether your focus is high-precision, optimized processes or the flexibility of mixed production, CoroMill® 390 delivers exceptional results across a wide range of materials and operations.
The Steiner Metalworking application team is here to help. We’ll assist you in selecting the ideal high-feed milling tools for your operation and provide expert guidance on process improvements to boost productivity, reduce costs, and extend tool life.
Wide Range of Products
CoroMill® 390 covers many applications with a large, versatile program that includes versions for shoulder milling and long edge milling. These cutters generate a 90-degree shoulder and are ideal for ramping and helical interpolation.
Light-Cutting Geometries
CoroMill® 390 features light-cutting insert geometries and high-performance grades designed for low-cutting forces and vibration-free machining. These attributes ensure secure milling across a wide range of materials. The popular GC1130 grade is an ideal match for these cutters.
Optimized Cutter Bodies
New CoroMill® 390 cutter bodies provide enhanced heat resistance and are available in L, M, or H pitch. Several models feature differential pitch for vibration-prone applications. Internal coolant systems cool the cutting zone and flush chips, minimizing the risk of jamming and improving tool life.
Features & Benefits
- CoroMill® 390 is a highly versatile cutter designed for shoulder milling, slotting, ramping, and helical interpolation across a wide range of materials.
- Its light-cutting insert geometries and differential pitch options minimize vibration and cutting forces for stable, efficient performance.
- The cutter bodies are optimized for heat resistance and chip evacuation, helping extend tool life and ensure consistent surface quality.
- Available with internal coolant options, it supports high-precision applications while reducing tooling inventory and setup time.
CoroMill® 390 Applications Overview
CoroMill® 390 is engineered for versatility across a wide range of milling operations. Its advanced insert geometry, high-performance cutting capabilities, and stability-enhancing design features make it an ideal solution for various machining challenges. Below is a breakdown of how CoroMill® 390 addresses key application demands:
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