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Kyocera CNMG120404CQ CJ225P
The Kyocera CNMG120404CQ CJ225P is a negative, 80° turning insert (≈12.70 × 4.76 × 3.81 mm) in Kyocera’s universal coated carbide grade CJ225P. Ideal for finishing and light turning in steels and forgings — stable chip control, high wear resistance, and excellent surface finish.
The Kyocera CNMG120404CQ CJ225P is a premium negative turning insert designed to deliver longer tool life, superior surface finish, and consistent performance across a wide range of steel and forged materials. Engineered by Kyocera, a global leader in cutting tools, this insert combines advanced geometry, universal coated carbide grade, and robust chip control to meet the needs of modern machining operations.
Hook / Attention Line
“Cut more parts, stop less machines: The Kyocera CNMG120404CQ CJ225P gives you longer tool life and lower cost per component — even on harder steels.”
Key Features & Specs
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Geometry: CNMG 120404 (80° rhombic, negative insert, approx. 12.70 × 4.76 × 3.81 mm)
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Chipbreaker / Groove: CQ series (stable, universal chip control)
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Grade / Coating: CJ225P — Kyocera’s universal coated carbide grade optimized for finishing / light cutting in steels and forged materials
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Radius: commonly 0.4 mm (0.04”) (variants include 0.8 mm)
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Applications: Turning / facing / light roughing, finishing passes in steels, alloy steels, and forgings
Why It’s a Best Seller
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Less downtime — robust grade resists wear, maintaining cutting edge longer
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Superior surface finish — stable negative geometry + CQ chip control delivers smooth surface without chatter
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High wear resistance — coating + substrate optimized to endure elevated cutting conditions
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Multi-edge use — each insert gives multiple usable edges, improving cost efficiency
🏭 Application Industries
Perfect for machining in industries such as automotive, aerospace, dies & mould, general engineering, oil & gas, and heavy equipment — wherever steel and alloy turning is critical.
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Frequently Asked Questions
It’s optimized for finishing to light cutting operations, especially in steels and forged materials. For heavy roughing you might choose a tougher, more aggressive grade.
It’s a universal grade for steels, alloy steels, and forged steels. It balances wear resistance and toughness for these materials.
As a CNMG style insert, it typically offers 4 usable cutting edges (both faces) if properly indexed and handled.
Common radius is 0.4 mm, but variants like 0.8 mm exist. Depths of cut and feed need to be matched to material & stability.
Simply DM, WhatsApp, or call CNC Tools Depot. Tell us the variant (radius) and quantity — we’ll confirm availability, price, and lead time immediately.
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