{"product_id":"sandvik-coromant-5730842-turning-insert-dcmt21-51-mm-1125","title":"Sandvik Coromant 5730842 Turning Insert DCMT21.51-MM 1125","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 5730842 is a solid carbide turning insert in the DCMT style, designed for external turning operations on CNC lathes and turning centers. It carries the 1125 manufacturer grade with a PVD-applied TiAlN and AlCr2O3 dual coating, offering wear resistance and thermal stability during continuous and interrupted cuts. The insert features a 55-degree diamond shape, a neutral hand orientation, and an MM chip breaker geometry. With a 1\/4-inch inscribed circle and a 1\/64-inch corner radius, this insert is suited for finishing and semi-finishing passes requiring tight tolerances and controlled chip formation. It is installed by licensed machinists and CNC tool-setters.\u003c\/p\u003e\u003cp\u003eThis insert is engineered primarily for steel workpieces and is also rated for stainless steel, superalloys, and titanium applications, placing it in ISO material groups P, M, and S. It fits standard DCMT screw-lock toolholders using the CoroTurn 107 series system. Typical applications include shaft turning, facing, and profiling on both light-duty and production-volume turning setups. The 2-cutting-edge configuration allows the insert to be indexed once before replacement, supporting cost-effective tooling management in high-throughput environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1125 grade carbide with PVD TiAlN and AlCr2O3 dual coating for extended tool life in steel and stainless cutting\u003c\/li\u003e\n\u003cli\u003e55-degree diamond insert shape (Shape Code D) for versatile turning and profiling access\u003c\/li\u003e\n\u003cli\u003eMM chip breaker geometry optimized for controlled chip evacuation during finishing cuts\u003c\/li\u003e\n\u003cli\u003eNeutral hand orientation compatible with standard right-hand and left-hand DCMT screw-lock holders\u003c\/li\u003e\n\u003cli\u003e2 cutting edges per insert for indexable service life\u003c\/li\u003e\n\u003cli\u003eCoroTurn 107 series compatibility for consistent clamping and repeatability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with DCMT-style screw-lock toolholders in the CoroTurn 107 series. ISO code DCMT 07 02 04-MM 1125 can be used to cross-reference compatible holder systems. Rated for primary use on steel (ISO P) and secondary use on stainless steel, superalloys, and titanium (ISO M, P, S).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before indexing or replacing any cutting insert. Use the appropriate Torx or hex key to seat the clamping screw to toolholder specification — do not over-torque the insert screw, as carbide inserts are brittle and will crack under excessive clamping force. Inspect the insert pocket and seating surface for chips or debris before seating the new insert.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: DCMT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 1125\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN \/ AlCr2O3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond (55 degrees)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: MM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.25 inches (6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.2894 inches (7.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.0938 inches (2.38 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0156 inches (0.40 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1102 inches (2.80 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: 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 Materials\u003c\/strong\u003e: Stainless Steel, Superalloy, Titanium (ISO M, P, S)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CoroTurn 107\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: DCMT 07 02 04-MM 1125\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242105\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\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 5730842\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51735055794482,"sku":"5730842","price":215.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0c777980e0d9610c1e6755e1b6051e50_cd9c6e69-6b54-4627-8950-43994adef0e4.jpg?v=1788769735","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5730842-turning-insert-dcmt21-51-mm-1125","provider":"Voomi Supply","version":"1.0","type":"link"}