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Korloy TNMX160404R NC3120
Korloy TNMX160404R NC3120 is a 60° triangle turning insert in NC3120 grade (CVD coated: TiCN + TiC + Al₂O₃) optimized for medium to rough turning of steels. Offers excellent fracture resistance, chip control, and long tool life. A trusted go-to insert for automotive, die & mold, general engineering. Stock and pricing available at CNC Tools Depot — DM / WhatsApp us now!
Boost Your Turning Productivity with Korloy TNMX160404R NC3120
When it comes to steel turning, machinists need inserts that deliver consistent performance, wear resistance, and reliability. The Korloy TNMX160404R NC3120 is engineered to meet those demands — combining Korloy’s trusted insert geometry with the advanced NC3120 grade for maximum efficiency on the shop floor.
Key Features & Specifications:
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Geometry / designation: TNMX160404R (60° triangle insert)
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Grade / coating: NC3120 (CVD coating: TiCN + TiC + Al₂O₃)
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Insert shape: 60° triangle with a 0.4 mm (≈0.016") nose radius (the “404” in 160404)
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Cutting applications: Primarily for turning / internal turning. While its geometry is optimized for turning, it can also serve in light boring or finishing tasks where triangular inserts are used.
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Material compatibility: Best suited for steels (medium to roughing operations) using the NC3120 grade for balanced wear and toughness.
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The NC3120 grade is known for combining fracture resistance, chip control, and thermal stability under moderate to aggressive conditions
Why It’s a Best Seller:
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Less downtime: With excellent edge stability and toughness, insert changeouts are less frequent.
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Consistent surface finish: Stable edges reduce chatter and lead to better part surfaces.
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High wear resistance: The multi-layer CVD coating (TiCN / TiC / Al₂O₃) provides wear and oxidation resistance under moderate to high cutting speeds.
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Balanced toughness: The NC3120 grade is engineered to resist chipping and fracture, which is critical in real shop conditions with fluctuations in feed or interrupted cuts
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Trusted by users: Many machinists prefer triangular inserts for their versatility in turning, and this particular model delivers reliability in routine production.
Application Industries
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Automotive & auto components (shafts, hubs, gears)
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Aerospace structural parts (steel components)
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Die & mold (steel mold cores, inserts)
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General engineering / machine building
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Oil & gas / heavy equipment (steel turning operations)
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Frequently Asked Questions
NC3120 is Korloy’s CVD-coated grade designed for medium to rough turning of steels. It provides a good balance between wear resistance and toughness, making it reliable in typical shop conditions.
Yes — the NC3120 grade has good fracture resistance, making it more tolerant to moderate interruptions and cross-cuts without premature chipping.
Exact parameters depend on workpiece material, stiffness, and setup. As a reference, Korloy often uses VM breaker data showing stable performance for NC3120 in steel turning at typical turning speeds (e.g. 200–300 m/min in steel) and moderate depths of cut. Start conservatively, then optimize in your setup.
The insert is designed to work well with Korloy’s VM-style chip breakers (or similar) that promote stable chip curling even at higher feed rates and deeper cuts. Good chip control helps reduce built-up edge and vibration.
This insert is commonly packaged in boxes of 10 pieces per pack. Yes — CNC Tools Depot handles both small and bulk orders — reach out to us to get bulk pricing and confirm stock today.
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