{"product_id":"sandvik-coromant-7861056-turning-insert-vcmt221-pf-4425","title":"Sandvik Coromant 7861056 Turning Insert VCMT221-PF 4425","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 7861056 is a solid carbide turning insert designed for precision finishing operations on steel and cast iron workpieces. Designated under the VCMT 11 03 04-PF 4425 ISO code, this insert features a 35-degree diamond (rhombic) shape with a 7-degree relief angle and a 0.40 mm (0.0156 inch) corner radius. The CVD-applied multilayer coating stack — Al2O3, TiN, and TiCN — provides high wear resistance balanced with toughness, making it well-suited for the demands of steel finishing passes. The PF chip breaker geometry promotes controlled chip formation at finishing feed rates. This insert carries 2 cutting edges and is designed for clamp or screw holding methods.\u003c\/p\u003e\n\u003cp\u003eThis insert is used in external turning applications where tight tolerances and fine surface finish are required on steel components. It is positioned in the CoroTurn 107 series, which targets positive-rake toolholders for finishing and light roughing on steel (ISO P) as the primary workpiece material, with cast iron (ISO K) as a secondary application. Typical installation scenarios include CNC lathes and turning centers in production machining shops, tool rooms, and repair facilities. Machinists and CNC operators select this grade when consistent tool life and surface quality are the priority over aggressive metal removal rates.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCVD multilayer coating: Al2O3, TiN, and TiCN for high wear resistance and toughness balance\u003c\/li\u003e\n  \u003cli\u003e35-degree diamond (rhombic) insert shape enables access in tight-clearance turning applications\u003c\/li\u003e\n  \u003cli\u003ePF chip breaker geometry optimized for steel finishing operations\u003c\/li\u003e\n  \u003cli\u003ePositive side clearance (Clearance Code C) reduces cutting forces and supports fine surface finishes\u003c\/li\u003e\n  \u003cli\u003eNeutral hand orientation — compatible with both left- and right-hand toolholder setups\u003c\/li\u003e\n  \u003cli\u003e2 cutting edges per insert for extended service per unit\u003c\/li\u003e\n  \u003cli\u003eWiper-edge-free design; tolerance code M per ISO insert standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CoroTurn 107 series positive-rake toolholders that accept VCMT 11 03 insert geometry. Primary workpiece material is steel (ISO P); secondary application is cast iron (ISO K). ANSI insert code VCMT1103 and ISO insert code VCMT1103 apply.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by CNC machinists or toolroom technicians using standard insert clamp or screw-lock toolholders rated for VCMT 11 03 geometry. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the insert. Torque the clamping screw to the toolholder manufacturer's specified value — do not estimate by feel. Inspect the insert pocket seating surface for wear or damage before each insert change to maintain positional accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: VCMT1103\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: VCMT 11 03 04-PF 4425\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: V - Diamond (Rhombic) 35-degree\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 35 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\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: 0.25 inches (1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\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\u003eNumber of Cutting Edges\u003c\/strong\u003e: 2\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: Positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: PF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker Operation\u003c\/strong\u003e: Finishing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 4425\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Al2O3, TiN, TiCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\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: CoroTurn 107\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp, Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 3.74 inches (L) x 1.54 inches (W) x 0.44 inches (H)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.44 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242105\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: 7861056\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51728582508850,"sku":"7861056","price":361.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/49f7c5b13c5bc5f03065e2d111ede1ef.jpg?v=1788693612","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7861056-turning-insert-vcmt221-pf-4425","provider":"Voomi Supply","version":"1.0","type":"link"}