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Deskar TNMG 160412U-CQ 7257
TNMG 160412 U CQ 7257 is a premium carbide turning insert engineered for enhanced wear resistance and fine surface finishes in steel & cast iron. High‐performance chipbreaker “CQ” style, ideal for finishing & semi‐finishing.
Unlock Higher Productivity with TNMG 160412 U CQ 7257
Get ready to reduce downtime and cost per part. The TNMG 160412 U CQ 7257 insert offers exceptional machining performance with:
Key Features & Specifications:
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Geometry & Size:
TNMG 160412 form (negative, 60° triangle, double‐sided); IC (inscribed circle) ~ 9.52 mm; thickness ~ 4.76 mm; cutting edge (L) ~ 16.5 mm; corner radius ~ 1.2 mm. -
Grade & Coating (“CQ 7257” style):
Premium carbide substrate with wear‐resistant coating (multi‐layer, likely TiCN/Al₂O₃/TiN or similar) giving superior resistance to abrasion, crater wear, and flank wear. -
Chipbreaker / Cutting Style:
“CQ” style chipbreaker – optimized for stable chip control in finishing to semi‐finishing turning operations. The “U” in designation suggests a specific rake/clearance combination suited for better surface finish and lower cutting forces. -
Cutting Applications:
Designed for turning steel, alloy steel, and cast iron. Best in finishing/semi‐finishing passes; works well under moderate feeds & depths of cut. Provides good surface finishes on turned components.
Why It’s a Best Seller:
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Longer Tool Life: Durable substrate + advanced coating combo resist wear and thermal damage, extending insert life.
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Reduced Downtime & Cost per Component: Thanks to stable geometry & chip control, fewer insert changes, less scrap.
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Better Surface Finish: Sharp, well‐maintained cutting edge, low vibration from double‐sided design, corner radius suited for fine finishes.
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High Wear Resistance: The CQ chipbreaker & coating resist abrasive and adhesive wear even when turning steel & grey/ductile cast iron.
Application Industries
Ideal for:
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Automotive components (shafts, gears, housings)
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Aerospace (where finish & consistency matter)
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Die & Mold work (for finishing operations)
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General Engineering & Heavy Fabrication (turning steel, cast iron parts)
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Frequently Asked Questions
Each part signifies a specification:
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TNMG = Triangular, Negative, 60° included angle, Multi‐edged, General turning style.
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160412 = Size code: 16 = approx. IC 9.52 mm, 04 = thickness class (≈ 4.76 mm), 12 = corner radius / length or similar spec.
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U = rake/clearance variant (often unified / specific clearance rake suited for finishing).
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CQ = chipbreaker / cutting style / coating designation (in this case a premium style for better chip control and wear resistance).
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7257 = grade / coating code (manufacturer’s code for substrate & coating stack).
Steel, alloy steel, cast iron. Best in turning operations where finishing to semi‐finishing passes are required.
Using appropriate feeds, speed, and well‐rigged workholding you should achieve smooth finishes thanks to the sharp edge, stable geometry, and CQ chipbreaker minimizing vibrations and built‐up edge.
Compared to roughing inserts, this one has finer geometry (smaller nose/corner radius), more delicate chipbreaker, better coatings — so less heat, less force, better finish; but it may not take very heavy depths of cut like roughing inserts.
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Use proper cutting speeds, feeds and depths suited for finishing / semi‐finishing.
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Ensure good rigidity in tooling & workpiece.
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Use coolant or lubrication to reduce heat buildup.
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Monitor insert edge wear and replace before chipping or fracture to avoid damaging part / toolholder.
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