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Unlock superior turning performance with the Deskar CNMG120412-CQ LF9218 — engineered for real results on steel & stainless steel.
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Deskar CNMG120412-CQ LF9218
Deskar CNMG120412-CQ LF9218 is a high-performance, negative-geometry carbide insert with CQ chipbreaker and rhombic 80° shape. CVD-coated LF9218 grade excels on steel and stainless steel for semi-finishing & finishing turning. Offers higher wear resistance, better surface finish, fewer tool changes.
$ 2.28
$ 2.85 MRP
Other CNMG120412 Products
Deskar CNMG120412-CQ LF9218 brings together premium materials, geometry, and coating to deliver professional-grade performance in turning operations. Featuring a negative geometry rhombus (C 80°) insert, size-12 plate, and a 0° front corner, this insert is paired with the CQ chipbreaker that ensures efficient chip control and minimizes built-up edge, especially on stainless steels and alloyed steels.
The LF9218 grade uses a robust carbide substrate with CVD coating optimized for wear resistance and thermal stability. This makes it a go-to choice for shops that demand consistent surface finish, extended life, and less frequent insert replacements — reducing both downtime and overall cost per component.
Use it for semi-finishing to finishing in external turning and boring tasks. Especially effective in machine shops serving automotive, aerospace, die & mold, valve & fitting, stainless steel component work. Perfect when you need sharp edges, minimal vibration, and excellent tool life under tougher cutting conditions.
Packaged typically in multi-packs (e.g. 10 pcs), CNC Tools Depot offers this insert with stock ready for same-day dispatch and volume discounts for bulk orders.
Hook / Attention Line:
“Slash your machining downtime & cost per part – get up to 2× tool life with the Deskar CNMG120412-CQ LF9218 insert!”
Key Features & Specs:
Key Features & Specs:
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Geometry: Negative insert, Rhombus 80° shape (C-type), plate size 12, front corner = 0°.
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Chipbreaker: CQ style, designed for smoother chip flow and consistent finish.
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Grade / Coating: LF9218 — a premium Deskar CVD-coated carbide (steel / stainless application) offering strong wear resistance.
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Applications: Semi-finishing & finishing in external turning / boring on steel (P) and stainless steel (M) materials.
Why It’s a Bestseller
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Longer tool life: Thanks to LF9218’s coating and tough carbide substrate, this insert resists wear and maintains edge sharpness longer.
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Better surface finish: The precise geometry & CQ chipbreaker reduce edge chipping & vibration, so parts come off clean, first-time.
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Reduced downtime & cost per component: Fewer insert changes, fewer rejects — which adds up in high-volume shops.
Application Industries:
Ideal for machining in:
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Automotive (engine blocks, shafts, components)
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Aerospace (structural steel / stainless parts)
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Die & mold work (steel molds, hardened materials)
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General engineering (shafts, fittings, valves, etc.)
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Frequently Asked Questions
It is optimized for steel (P-type) and stainless steel (M-type) machining, particularly in semi-finishing to finishing turning. It can handle alloyed steels and tougher stainless grades better than uncoated or lower-grade inserts.
Recommended cutting speeds are about 80-180 m/min on steel and stainless steel (depending on rigidity, depth of cut, and machine power). Feed and depth will vary with the setup, but modest cuts work well to maximize tool life
LF9218 uses a tougher substrate and better coating (CVD) which improves wear resistance, edge strength, and reduces frequent sharpening or replacing. Yes, upfront cost is higher, but cost per component is usually lower thanks to extended life and fewer tool changes.
CQ is a chipbreaker design intended to improve chip flow and reduce vibrations / chatter. It helps maintain good surface finish and edge stability, especially useful when machining stainless or alloyed steels where chips can stick or cause edge damage.
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While the CNMG120412-CQ LF9218 is excellent for semi-finishing & finishing, when taking very heavy or roughing cuts you might consider different geometry or chipbreaker designed for ruggedness (higher negative clearance, larger land, etc.). However, if your machine is rigid and setup strong, this insert handles moderate depths of cut quite well.
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