{"product_id":"sandvik-coromant-7859170-turning-insert-cnmg431-qm-4415","title":"Sandvik Coromant 7859170 Turning Insert CNMG431-QM 4415","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 7859170 is a CNMG-style indexable turning insert in grade 4415, engineered for productive metal cutting in steel and cast iron applications. It carries a tri-layer CVD coating of TiCN, Al2O3, and TiN that resists crater wear and built-up edge at elevated cutting speeds. The insert features an 80-degree diamond shape (Shape Code C), a neutral hand orientation, a 1\/2 inch (0.500 inch) inscribed circle, and a 0.40 mm (0.0156 inch) corner radius. The QM chip breaker geometry is designed to manage chip flow across a broad range of depths of cut and feed rates, reducing cutting forces on the workpiece. Licensed machinists and CNC lathe operators are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for external and internal turning operations on steel (ISO P) and cast iron (ISO K) workpieces in both roughing and semi-finishing passes. The T-Max P series is a platform commonly found on production turning centers and manual engine lathes wherever consistent chip control and tool life are priorities. It is sold individually, with a minimum order quantity of 10 pieces per order. Each insert provides four usable cutting edges, reducing per-edge tooling cost in high-volume turning environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 4415 CVD-coated carbide substrate with TiCN, Al2O3, and TiN layers for wear and crater resistance\u003c\/li\u003e\n  \u003cli\u003e80-degree diamond insert shape with four cutting edges per insert\u003c\/li\u003e\n  \u003cli\u003eQM chip breaker geometry for controlled chip formation across variable feed and depth conditions\u003c\/li\u003e\n  \u003cli\u003eNeutral hand orientation compatible with both right- and left-hand toolholders where geometry permits\u003c\/li\u003e\n  \u003cli\u003eCompatible with clamp and screw insert-holding methods\u003c\/li\u003e\n  \u003cli\u003ePrimary workpiece material: Steel (ISO P); Secondary: Cast Iron (ISO K)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNMG-style toolholders within the T-Max P series platform. Compatible with clamp and screw clamping systems. ISO code CNMG 12 04 04-QM 4415. Verify toolholder pocket specifications against insert dimensions before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench or T-key specified by the toolholder manufacturer when tightening clamping screws — do not over-torque, as this can crack the insert or damage the pocket seating surface. Inspect the toolholder pocket for chips, debris, or wear before seating a new insert.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: CNMG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CNMG 12 04 04-QM 4415\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond (80 degree, Shape Code C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\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: Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN, Al2O3, TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: QM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 1\/2 inch (0.5000 inch \/ 12.70 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.40 mm (0.0156 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3\/16 inch (0.1875 inch \/ 4.76 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.2030 inch (5.16 mm)\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\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\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 (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: T-Max P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 3.74 x 1.54 x 0.43 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 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: 7859170\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51749187322162,"sku":"7859170","price":276.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/65bb728d6d066f2f54d40a11e690c4ba_5627834e-53d5-40a3-bf5a-52f74e9a286b.jpg?v=1788902990","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7859170-turning-insert-cnmg431-qm-4415","provider":"Voomi Supply","version":"1.0","type":"link"}