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Unitec CNMA 120412 UT3430
The Unitec CNMA 120412 UT3430 is a robust turning insert delivering longer tool life, stable cutting, and excellent surface finish. Ideal for medium‐ to heavy‐duty turning in automotive, aerospace, die & mold, and general engineering sectors.
The Unitec CNMA 120412 UT3430 is a premium negative-type carbide turning insert engineered for consistent performance in medium to heavy-duty machining. With its 80° rhombic CNMA geometry, it delivers strong edge stability, reliable chip evacuation, and versatility across a wide range of turning operations.
Powered by Unitec’s UT3430 grade, this insert combines a tough substrate with a multilayer PVD/CVD coating, offering an excellent balance of wear resistance, heat resistance, and toughness. The result is significantly longer tool life, reduced insert changes, and higher productivity on the shop floor.
Hook / Attention Line
Cut faster, last longer: get up to 30–50 % more life per insert with the Unitec CNMA 120412 UT3430 — lowering your cost per component and reducing unplanned downtime.
Key Features & Specs
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Geometry: CNMA (80° rhombic, negative insert) in size 120412 — a stable, versatile turning geometry for external facing, profiling, and medium cuts.
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Grade & Coating: UT3430 — a premium grade from Unitec, optimized for wear resistance and toughness under interruption or variable cutting conditions.
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Coating: Multilayer PVD / CVD hybrid (as per Unitec standard) — offers excellent adhesion, thermal barrier, and abrasion resistance.
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Cutting Applications:
• Turning / external profiling
• Medium finishing & semi-finishing
• Interrupted cuts, variable depths
• Cast iron, steel, alloy steels, and some stainless steels
Why It’s a Best Seller
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Longer tool life: Thanks to its wear-resistant UT3430 coating, the insert resists crater wear, flank wear, and edge breakage even under high thermal stress.
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Better surface finish: The fine coating and stable geometry help reduce surface roughness—so parts come off the machine cleaner.
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Less downtime: Replace inserts less often, and minimize machine stoppages.
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Consistent performance: In demanding jobs and tough interruption zones, it holds up.
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Lower cost per component: Each insert gives more usable life, so your tooling spend per part drops.
🛠 Application Industries
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Longer tool life: Thanks to its wear-resistant UT3430 coating, the insert resists crater wear, flank wear, and edge breakage even under high thermal stress.
-
Better surface finish: The fine coating and stable geometry help reduce surface roughness—so parts come off the machine cleaner.
-
Less downtime: Replace inserts less often, and minimize machine stoppages.
-
Consistent performance: In demanding jobs and tough interruption zones, it holds up.
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Lower cost per component: Each insert gives more usable life, so your tooling spend per part drops.
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Frequently Asked Questions
It is designed for general steels, alloy steels, and cast irons. It can handle some stainless steels depending on cutting parameters, especially if cooling or lubrication is well controlled.
Typical speeds for steel might be in the range of 180–280 m/min (depending on material and rigidity), with feeds in the 0.15–0.35 mm/rev range. Always test and adjust based on your machine, setup stiffness, and coolant supply.
Compared with standard P-grades, UT3430 offers improved wear resistance and edge stability, especially under thermal or intermittent loading. It gives you more margin for error in tougher cutting zones.
Yes — the robust substrate and coating combination is intended to resist chipping at interruptions. For aggressive interrupted cuts, moderate down-cutting or light engagement strategies further enhance life.
We often maintain stock in major cities. For standard orders, lead time is 1–3 business days (depending on region). Bulk orders (100s to 1000s of pieces) may require factory direct procurement—DM or WhatsApp to get the exact timeline and quantity discount.
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