{"product_id":"sandvik-coromant-7859104-turning-insert-dcmt21-51-pf-4415","title":"Sandvik Coromant 7859104 Turning Insert DCMT21.51-PF 4415","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 7859104 is a solid carbide turning insert in the DCMT style, designed for precision external turning operations on CNC and manual lathes. This insert carries a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance and thermal stability across a range of cutting conditions. It features a 55-degree diamond shape (Insert Shape Code D), a 0.40 mm corner radius, and a neutral hand orientation. The PF chip breaker geometry is engineered for finishing and light roughing passes. Qualified to ISO Code DCMT 07 02 04-PF 4415, this insert is a direct fit for CoroTurn 107 toolholders and compatible insert pockets of the same geometry class.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for turning steel as its primary workpiece material, with cast iron as a secondary application. It is used in production and job-shop environments where consistent surface finish and dimensional accuracy are required on external diameters, faces, and contours. The PF chip breaker geometry performs well in finishing operations at moderate to light depths of cut, making it appropriate for both high-volume CNC turning cells and lower-volume manual lathe work. Licensed machinists and CNC operators in metalworking, maintenance machining, and general manufacturing are the typical users.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCVD multilayer coating (TiCN, Al2O3, TiN) for thermal wear resistance and extended tool life\u003c\/li\u003e\n  \u003cli\u003e55-degree diamond insert shape with 7-degree relief angle (Clearance Code C) for positive cutting action\u003c\/li\u003e\n  \u003cli\u003e0.40 mm corner radius balances surface finish quality with edge strength in finishing passes\u003c\/li\u003e\n  \u003cli\u003ePF chip breaker geometry optimized for steel finishing and light interrupted cuts\u003c\/li\u003e\n  \u003cli\u003eNeutral hand orientation — fits left-hand, right-hand, and straight toolholder configurations\u003c\/li\u003e\n  \u003cli\u003eTwo cutting edges per insert for cost-effective indexing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in SANDVIK COROMANT CoroTurn 107 toolholders and any compatible insert pocket accepting a DCMT 07 02 04 geometry insert with Clamp or Screw holding method. ISO Code: DCMT 07 02 04-PF 4415. Manufacturers Catalog Number: DCMT 2(1.5)1-PF 4415.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and seating screw specified by the toolholder manufacturer to avoid insert rocking or improper seating. Inspect the insert pocket and clamping components for wear or debris before seating a new insert.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: DCMT 07 02 04-PF 4415\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: DCMT\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 Shape Code\u003c\/strong\u003e: D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 4415\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN, Al2O3, TiN (CVD process)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: PF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.40 mm (0.0156 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 1\/4 inch (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3\/32 inch (0.0938 inches)\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: Clamp, Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (Code P)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Cast Iron (Code K)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CoroTurn 107\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3.74 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.54 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.43 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: 7859104\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51752812151090,"sku":"7859104","price":207.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5b28afd38b78c37fdff7b737960b493e_d4bdf02a-0600-4dee-bf5d-52bd05c64e84.jpg?v=1788930448","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7859104-turning-insert-dcmt21-51-pf-4415","provider":"Voomi Supply","version":"1.0","type":"link"}