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Korloy TNMX160408R NC3120
Unlock smoother, longer-life turning with Korloy TNMX160408R NC3120 — a reliable negative triangular insert engineered for steel turning operations. #CarbideInserts #Korloy #CNCTools
Boost your machining efficiency with the Korloy TNMX160408R NC3120, a premium negative triangular turning insert designed for consistent performance in steel turning applications. Engineered with Korloy’s NC3120 grade, this insert combines a tough substrate with an advanced wear-resistant coating, ensuring longer tool life, reduced downtime, and improved surface finish.
The TNMX geometry provides a stable cutting edge with reliable chip evacuation, especially when paired with Korloy’s VM-type chip breaker, making it an excellent choice for medium to heavy cuts and even interrupted machining conditions. The NC3120 grade excels in maintaining edge sharpness under varying cutting loads, offering outstanding wear resistance, oxidation resistance, and toughness.
🔍 Key Features & Specs
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Geometry: TNMX160408R — negative, triangular (60°), with chip slot for stable chip flow
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Grade & Coating: NC3120 — a Korloy PVD/CVD grade optimized for wear resistance, oxidation resistance, and toughness
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Chip Control: Compatible with Korloy’s VM-type chip breaker design to control chips even in heavy interrupted cuts
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Cutting Application: Turning (external and face), suitable for medium-to-heavy cuts in steel (general & alloy steels)
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Cutting Conditions: Effective in ranges of feed / depth where NC3120 excels — stable turning across broad ranges
Why It’s a Best Seller:
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Lower Downtime: High wear resistance means fewer insert changes per shift
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Stable Performance: The combination of substrate + coating gives consistent tool life even under variable cutting loads
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Better Surface Finish: Smooth cutting edge retention reduces chatter and yields better finishes on turned parts
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High Chipping Resistance: Especially in semi-rough and interrupted cuts, thanks to the VM chip breaker and NC3120 robustness
🏭 Application Industries
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Automotive (shafts, housings, components)
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Aerospace (steel alloy parts)
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Die & Mold (holders, inserts, backings)
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General engineering, heavy machinery parts
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Frequently Asked Questions
It is ideal for carbon steels, alloy steels, and many general steel applications, especially in continuous and interrupted turning.
NC3120 is mainly tuned for steels. For tougher stainless or harder materials, Korloy offers other grades more optimized for those conditions.
The VM chip breaker (3-dimensional design) is commonly used to control chip flow on TNMX/turning inserts under moderate to heavy cuts.
Compared to older grades, NC3120 offers better oxidation resistance, improved wear resistance, and more stable tool life across changing cutting conditions.
Use proper cutting speeds, feeds, and depths recommended for steel turning, avoid excessive shock loads, and ensure stable clamping and coolant/fluids as needed.
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