{"product_id":"sandvik-coromant-7860998-turning-insert-snmg642-pr-4425","title":"Sandvik Coromant 7860998 Turning Insert SNMG642-PR 4425","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 7860998 is a SNMG-style indexable turning insert from the T-Max P series, designed for external and internal turning operations on CNC lathes and turning centers. It carries manufacturer grade 4425 carbide substrate with a CVD-applied multilayer coating of Al2O3, TiCN, and TiN, delivering wear resistance and thermal stability at elevated cutting speeds. The insert features a square shape with a 3\/4 inch inscribed circle and a 1\/32 inch corner radius, offering eight usable cutting edges per insert. It is installed and indexed by licensed machinists and CNC operators during production or maintenance turning work.\u003c\/p\u003e\u003cp\u003eThis insert is engineered primarily for steel (ISO material code P) with a secondary application in cast iron (ISO material code K). It suits general-purpose and finish turning in both high-production and job-shop environments where consistent tool life and predictable chip control are required. The PR chip breaker geometry supports a wide range of depths of cut and feed rates on steel components. The neutral hand orientation allows use on standard right-hand and left-hand toolholders configured for SNMG seating.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: Al2O3, TiCN, and TiN for thermal and abrasion resistance\u003c\/li\u003e\n\u003cli\u003eSquare insert shape (SNMG) with eight available cutting edges per insert\u003c\/li\u003e\n\u003cli\u003e3\/4 inch (0.7500 inch) inscribed circle for robust depth-of-cut capacity\u003c\/li\u003e\n\u003cli\u003e1\/32 inch (0.0313 inch) corner radius for balanced edge strength and surface finish\u003c\/li\u003e\n\u003cli\u003ePR chip breaker optimized for steel and cast iron turning\u003c\/li\u003e\n\u003cli\u003eCompatible with clamp and screw insert holding methods\u003c\/li\u003e\n\u003cli\u003eISO code SNMG 19 06 08-PR 4425 for cross-reference sourcing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in SNMG-style toolholders that accept a square insert with a 3\/4 inch inscribed circle, 1\/4 inch insert thickness, and a 0.3120 inch hole diameter. Compatible holding methods include clamp and screw styles. Verify toolholder pocket geometry and clearance code N seating requirements before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified clamping hardware to seat the insert securely in the pocket; do not overtighten or use improvised tools on the clamp screw. Inspect the toolholder pocket for wear or debris before seating a new insert, as a damaged pocket will reduce edge life and dimensional accuracy.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: SNMG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape Code\u003c\/strong\u003e: S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 4425\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: 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\u003eInscribed Circle\u003c\/strong\u003e: 3\/4 inch (0.7500 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 1\/32 inch (0.0313 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 1\/4 inch (0.2500 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.3120 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 8\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: PR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\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\u003eSeries\u003c\/strong\u003e: T-Max P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (ISO Code P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Cast Iron (ISO Code K)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: SNMG 19 06 08-PR 4425\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 insert per package\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: 0.54 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: 7860998\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51728208789810,"sku":"7860998","price":598.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/76c9dbe0f76ae78b7cc6d6068cd2df11.jpg?v=1788689572","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7860998-turning-insert-snmg642-pr-4425","provider":"Voomi Supply","version":"1.0","type":"link"}