{"product_id":"sandvik-coromant-6868550-turning-insert-cnmg432-kr-3225","title":"Sandvik Coromant 6868550 Turning Insert CNMG432-KR 3225","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 6868550 is a CNMG432-KR 3225 series turning insert designed for precision external turning operations on CNC lathes and turning centers. It features a solid carbide substrate with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, making it well suited for cutting cast iron and other ISO K workpiece materials. The insert carries a neutral hand orientation, an 80-degree diamond (C) shape, and a KR chip breaker geometry. With a 0.5-inch inscribed circle and a corner radius of 0.03 inches (1\/32 inch), it fits standard CNMG toolholders and delivers consistent chip control across moderate to heavy roughing passes.\u003c\/p\u003e\u003cp\u003eThis insert is intended for production turning environments where cast iron components are machined at medium to high material removal rates. The T-Max P series designation indicates compatibility with Sandvik Coromant T-Max P clamping toolholders that accept CNMG insert geometry. It is installed by machinists and CNC programmers in job shops, manufacturing facilities, and production lines running ferrous and gray cast iron parts. The KR chip breaker is optimized for interrupted and continuous cuts in cast iron, controlling chip formation and reducing built-up edge at the cutting zone. Four available cutting edges per insert support efficient tooling costs in high-volume operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance and thermal stability on cast iron\u003c\/li\u003e\n\u003cli\u003eCNMG diamond shape with 80-degree included angle and KR chip breaker geometry\u003c\/li\u003e\n\u003cli\u003eNeutral hand orientation fits standard right- or left-hand CNMG toolholder setups\u003c\/li\u003e\n\u003cli\u003eFour usable cutting edges per insert for extended tool life per unit\u003c\/li\u003e\n\u003cli\u003eClamp and pin insert holding method for secure seating under heavy cutting loads\u003c\/li\u003e\n\u003cli\u003eISO code CNMG 12 04 08-KR 3225 for cross-reference with standard toolholder catalogs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNMG-style toolholders within the Sandvik Coromant T-Max P series. The ISO code CNMG 12 04 08-KR 3225 allows cross-referencing with compatible clamping and pin-lock toolholders that accept CNMG 432 inserts. Primary workpiece material is cast iron (ISO K materials).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert seating and replacement should be performed by a qualified machinist with the machine spindle fully stopped and all stored energy released per shop lockout\/tagout procedures. Clean the insert pocket and seating surfaces before installing the new insert to ensure proper contact and prevent premature edge failure. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer — do not overtighten or substitute non-OEM clamping components. Index to a fresh cutting edge rather than rotating the insert while the machine is running.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: CNMG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond (80-degree included angle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 3225\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: T-Max P\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)\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: KR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Rounded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5 inches (12.70 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.03 inches (0.79 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches (4.76 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.203 inches (5.16 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 12.10 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\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: N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron (ISO K)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CNMG 12 04 08-KR 3225\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 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: 6868550\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51752090206514,"sku":"6868550","price":241.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d34a738934c5831bad9ea5b71e8f042f_5661e1af-18d2-4e96-920b-1ea7eae9d6a5.jpg?v=1788925770","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-6868550-turning-insert-cnmg432-kr-3225","provider":"Voomi Supply","version":"1.0","type":"link"}