{"product_id":"sandvik-coromant-8021127-dnmg-15-04-12-mr-4415-turning-insert","title":"Sandvik Coromant 8021127 Dnmg 15 04 12-MR 4415 Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 8021127 is a DNMG-style carbide turning insert designed for steel machining in both roughing and medium machining operations. Carrying the ISO code DNMG 15 04 12-MR 4415, this insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN that delivers high wear resistance with maintained toughness — the Grade 4415 characteristic that makes it effective across a wide range of steel (ISO P) workpiece materials. The insert has a 55-degree diamond (rhombic) shape, a 0.5000-inch inscribed circle, and a 0.0469-inch corner radius. It is held by clamp or screw and suited for use by machinists and CNC lathe operators running production or job-shop turning work.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended for turning applications on steel and secondary use on cast iron (ISO K) workpiece materials. The MR chip breaker geometry is optimized for roughing and medium machining, making it a practical choice for interrupted cuts, scaled surfaces, and general-purpose stock removal passes. The neutral hand orientation allows use in standard right-hand and left-hand toolholders designed for DNMG geometry inserts.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance and thermal protection\u003c\/li\u003e\n  \u003cli\u003eGrade 4415 — high to moderate wear resistance with toughness for steel (ISO P) applications\u003c\/li\u003e\n  \u003cli\u003e55-degree diamond insert shape (D) with 0.0469-inch corner radius for versatile turning profiles\u003c\/li\u003e\n  \u003cli\u003eMR chip breaker geometry rated for roughing and medium machining operations\u003c\/li\u003e\n  \u003cli\u003eNegative side clearance (N-type) with M tolerance for reliable seating in DNMG toolholders\u003c\/li\u003e\n  \u003cli\u003eCompatible with clamp and screw insert holding methods\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in DNMG-style turning toolholders that accept the ANSI size code 433 (ISO size code 150412) insert geometry. Primary workpiece material is steel (ISO P); secondary application is cast iron (ISO K) per the grade classification of this insert series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or CNC setup technician. Power down and lock out the machine before indexing or replacing inserts. Seat the insert fully in the pocket before engaging the clamp or screw, and verify torque per the toolholder manufacturer specification — do not overtighten the clamping screw. Inspect the insert pocket and shim for damage or debris before each insert change to ensure accurate seating and prevent premature edge failure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: DNMG433\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: DNMG 15 04 12-MR 4415\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: D - Diamond (Rhombic) 55 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 4415\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Layers\u003c\/strong\u003e: TiCN, Al2O3, TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5000 inches (1\/2 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0469 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches (3\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSide Clearance\u003c\/strong\u003e: Negative\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: MR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker Operation\u003c\/strong\u003e: Roughing, Medium Machining\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp, Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (ISO P)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Cast Iron (ISO K)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: DNMG-MR (ISO P)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.29 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SANDVIK COROMANT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 8021127\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51750026510642,"sku":"8021127","price":348.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0805d603a83b9dbe6a840372c1d5081.jpg?v=1788913209","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-8021127-dnmg-15-04-12-mr-4415-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}