{"product_id":"sandvik-coromant-7859079-turning-insert-ccmt21-51-wf-4415","title":"Sandvik Coromant 7859079 Turning Insert CCMT21.51-WF 4415","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 7859079 is a CCMT-style diamond-shaped turning insert designed for precision external turning operations on CNC lathes and turning centers. It carries grade 4415 solid carbide with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which delivers wear resistance and thermal stability across a broad range of cutting conditions. The insert features a WF chip breaker geometry, a 0.4 mm corner radius, an 80-degree included angle, and an inscribed circle of 6.35 mm. With two cutting edges and a neutral hand orientation, it suits a wide range of turning tool holders used in production and job-shop environments.\u003c\/p\u003e\n\u003cp\u003eThis insert is engineered primarily for machining steel (ISO material group P) and cast iron (ISO material group K) in finishing and light semi-finishing operations. The WF chip breaker geometry controls chip flow at low-to-moderate depths of cut, making it well suited for close-tolerance turning passes where surface finish and dimensional accuracy are critical. It belongs to the Sandvik CoroTurn 107 series, which is built for positive-rake external turning applications. Installation is typically performed by qualified machinists or CNC setup technicians. The ISO designation for this insert is CCMT 06 02 04-WF 4415.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 4415 solid carbide substrate with CVD multilayer TiCN, Al2O3, and TiN coating for extended tool life\u003c\/li\u003e\n  \u003cli\u003eWF chip breaker geometry optimized for finishing and light semi-finishing cuts on steel and cast iron\u003c\/li\u003e\n  \u003cli\u003e80-degree diamond insert shape (CCMT) with neutral hand for versatile holder compatibility\u003c\/li\u003e\n  \u003cli\u003e0.4 mm corner radius (0.0156 inch) for tight-tolerance finishing operations\u003c\/li\u003e\n  \u003cli\u003eTwo usable cutting edges per insert, reducing per-edge tooling cost\u003c\/li\u003e\n  \u003cli\u003eClamp and screw holding method compatible with standard CCMT toolholder pockets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CoroTurn 107 series toolholders and any standard CCMT insert pocket accepting a C-clearance, M-tolerance insert with a 0.1102-inch hole diameter. ISO insert size code is CCMT 06 02 04. Verify holder pocket geometry and insert size code before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert seating and clamping should be performed with the machine powered off and all rotating components fully stopped. Use the appropriate torx or hex key to the toolholder manufacturer's specified clamping procedure when securing the screw or clamp. Inspect the insert pocket for chips, debris, or wear before seating a new insert, as contamination affects seating accuracy and tool life. Follow facility safety protocols and applicable OSHA machine guarding requirements during insert changes.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: CCMT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CCMT 06 02 04-WF 4415\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CoroTurn 107\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 4415\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\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 Shape\u003c\/strong\u003e: Diamond (80 degrees included angle)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape Code\u003c\/strong\u003e: C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.4 mm (0.0156 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 6.35 mm (0.1102 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 2.38 mm (0.0938 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1102 inch\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\u003eChip Breaker\u003c\/strong\u003e: WF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHolding Method\u003c\/strong\u003e: Clamp and 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\u003ePackage Dimensions\u003c\/strong\u003e: 3.74 inches L x 1.54 inches W x 0.43 inches H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.07 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: 7859079\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51731774636338,"sku":"7859079","price":220.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c4d6f59609400122b3dbce1eb43fa361.jpg?v=1788734798","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7859079-turning-insert-ccmt21-51-wf-4415","provider":"Voomi Supply","version":"1.0","type":"link"}