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Korloy WNMG080408-VM NC3120
The Korloy WNMG080408‑VM NC3120 is a premium turning insert designed for medium-cutting of steels and alloy steels. Featuring Korloy’s NC3120 grade and VM chip breaker geometry, it delivers high wear resistance, excellent chip control and consistent surface finish—ideal for automotive, aerospace, die & mold and general engineering applications.
When productivity matters, Korloy WNMG080408-VM NC3120 delivers unmatched consistency in steel turning. Designed with advanced NC3120 grade technology and the VM chip breaker geometry, this insert is a powerhouse for machinists who demand longer tool life, stable cutting, and superior surface finish across medium cutting conditions.
Hook / Attention Line
Cut more parts. Spend less time on tool changes. The Korloy WNMG080408-VM NC3120 insert gives you longer tool life, faster cutting and a lower cost per component.
Key Features & Specs
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Geometry: WNMG 08 04 08-VM — 12.7 mm inscribed circle (IC), cutting edge length ~8.3 mm, thickness ~4.76 mm (standard for WNMG080408)
Grade: NC3120 — designed for general steel and alloy steel applications, combining good wear and shock resistance. -
Coating / substrate: Korloy’s NC3120 grade uses a special Al₂O₃ film + intermediate film and MT-CVD columnar film for strong bonding, high hardness and mechanical wear and shock resistance.
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Chip breaker: VM chip breaker — 3D design for stable cutting performance even with high feed, deep depth of cut. Low cutting resistance and strong chip control.
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Recommended applications: Medium cutting operations for steels, alloy steels with interrupted cuts or general turning duties. For example, Korloy data show excellent performance on SCM440 (alloy steel) with depth of cut ~2.0 mm, feed ~0.3–0.45 mm/rev.
Why It’s a Best Seller
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Less downtime: With its tough substrate + strong coating + VM chip breaker geometry, this insert holds up longer under demanding turning operations, reducing tool change frequency and interrupting production less.
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Better surface finish: The combination of stable cutting edge and optimal chip control means consistent surface quality on turned components—important for close‐tolerance engineering work.
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High wear resistance + shock resistance: The NC3120 grade is specifically engineered for balanced performance of wear resistance and shock resistance, so it handles both continuous and moderately interrupted cuts.
Cost per component drops: Because the tool lasts longer and produces parts with fewer rejects or reworks, your real cost per part comes down. -
Proven in the field: The VM chip breaker + NC3120 grade combination has documented case studies showing doubled insert life vs competitor grades under similar conditions.
🏭 Application Industries
Perfect for:
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Automotive (engine blocks, shafts, housings)
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Aerospace (structural steel components, fixtures)
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Die & Mould (steel tool blocks, pre-machining)
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General engineering (shafts, gear blanks, valve bodies, heavy machinery parts)
Anywhere you need reliable, high‐performance turning of steels and alloy steels
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Frequently Asked Questions
It is designed primarily for turning operations on steels and alloy steels (P-group ISO materials). The NC3120 grade gives you a good mix of wear and shock resistance suitable for these materials.
The ‘VM’ denotes the chip breaker geometry. In this case, a three-dimensional VM chip breaker, designed for stable chip control, especially under higher feed and deeper depth-of-cut conditions.
NC3120 incorporates a special Al₂O₃ film, intermediate film layers and columnar MT-CVD structure to improve bonding strength, hardness and mechanical wear & shock resistance. This translates into longer insert life and more stable performance.
Yes — the NC3120 grade and VM chip breaker are engineered for both continuous and moderately interrupted cutting. The tough substrate and geometry help withstand shock loads and maintain edge integrity
At CNC Tools Depot we keep stock of high-demand Korloy inserts. You can DM or WhatsApp us your requirement (size, quantity), mention “WNMG080408-VM NC3120”, and we will send you stock status, lead-time and bulk pricing right away.
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