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Unitec CNMG120412 UMT9155
Maximise productivity with the Unitec CNMG120412 UMT9155 carbide insert — featuring square geometry, durable carbide substrate, and a proprietary UMT9155 coating. Optimized for turning steel and stainless with superior wear resistance, excellent edge stability, and low cost per component.
Maximize your machining efficiency with the Unitec CNMG120412 UMT9155 carbide insert, now available at CNC Tools Depot – India’s Largest Marketplace for Carbide Inserts. Engineered with robust geometry and a high-performance grade, this insert delivers longer tool life, improved surface quality, and reduced machining costs in demanding turning operations.
Key Features & Specifications
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Insert Geometry (CNMG120412):
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Shape: Rhombic, 80° negative type
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Inscribed Circle (IC): 12.7 mm
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Thickness: ~4.76 mm
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Corner Radius (RE): 1.2 mm
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Four cutting edges per insert, maximizing cost-per-cut value
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Grade: UMT9155
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Unitec’s advanced carbide grade, designed for steel and stainless steel turning
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Optimized balance of toughness and wear resistance
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Enhanced performance under varying conditions, from roughing to finishing
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Coating Technology:
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Proprietary high-performance coating (PVD/CVD depending on batch)
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Excellent resistance to heat, abrasion, and built-up edge
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Suitable for both dry and coolant-assisted machining
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Why Machinists Choose CNMG120412 UMT9155
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Extended Tool Life – Fewer insert changes, less downtime, and more parts per edge.
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Consistent Surface Finish – Precision edge prep helps achieve stable cutting and smoother finishes, even on tougher stainless steels.
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High Wear Resistance – Grade UMT9155 is designed to withstand high cutting speeds and elevated temperatures without premature wear.
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Versatility – One insert for multiple operations, from heavy roughing to medium and semi-finishing cuts.
Application Industries
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Automotive – Shafts, housings, and precision engine components
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Aerospace – Machining of stainless and alloy steels used in critical parts
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Die & Mold – Turning pre-hardened steels and general mold bases
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General Engineering – Everyday machining across workshops and production floors
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Frequently Asked Questions
It’s engineered for steels and stainless steels, ideal for general engineering and auto parts. High abrasion resistance extends performance in those materials.
Yes. The 1.2 mm corner radius gives enough strength for roughing, while the grade and geometry help produce fine finishes in light finishing passes.
While specific comparative data depends on grade specs, UMT9155 aims to match or exceed wear resistance of mid-to-premium PVD turning grades — offering strong edge retention and toughness for steel turning.
Many PVD or CVD-coated carbide inserts are capable of dry machining; confirm with CNC Tools Depot regarding your machine and coolant setup. In general, better grades like UMT9155 handle heat well.
The 1.2 mm corner radius (RE = 1.2 mm) is a balanced choice — big enough for strength (less breakage) on rough cuts, small enough for fine finishes and lower cutting forces.
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