{"product_id":"sandvik-coromant-6868346-turning-insert-tcmt1-81-50-kf","title":"Sandvik Coromant 6868346 Turning Insert TCMT1.81.50-KF","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 6868346 is a solid carbide turning insert designed for precision finishing operations on cast iron workpieces. It carries the ANSI designation TCMT1.81.50-KF 3210 and the ISO designation TCMT 09 02 02-KF 3210. The insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which delivers high wear resistance with moderate toughness — the characteristic demand of cast iron (K-grade) applications. The 60-degree triangle shape with a positive side clearance and a 0.20 mm corner radius suits light, accurate finishing passes. The KF chip breaker geometry is optimized for controlled chip formation during finishing cuts.\u003c\/p\u003e\n\u003cp\u003eThis insert is used in external turning and light profiling operations, primarily on cast iron components in machining centers and CNC lathes. It belongs to the CoroTurn 107 series, which uses a screw-clamping insert-holding method. Typical applications include finishing passes on brake rotors, housings, and other cast iron parts where surface finish and dimensional accuracy are the priority. The 3210 grade is positioned for high wear resistance in stable, low-to-moderate interrupted cutting conditions. Machinists and CNC operators in production and job-shop environments install this insert as part of routine tooling changes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCVD multilayer coating: TiCN, Al2O3, and TiN for high wear resistance on cast iron\u003c\/li\u003e\n  \u003cli\u003eKF chip breaker geometry engineered for finishing operations\u003c\/li\u003e\n  \u003cli\u003e60-degree triangle insert shape (T) with positive side clearance\u003c\/li\u003e\n  \u003cli\u003e0.20 mm corner radius for fine surface finish requirements\u003c\/li\u003e\n  \u003cli\u003eScrew-clamping hold method compatible with CoroTurn 107 toolholders\u003c\/li\u003e\n  \u003cli\u003eMaximum depth of cut: 9.17 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in SANDVIK COROMANT CoroTurn 107 series toolholders that accept TCMT-style inserts with an ANSI size code of 1.81.50 and ISO size code 090202. Intended for CNC lathes and turning centers performing finishing operations on cast iron (ISO material group K) workpieces.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified CNC operator or machinist. Power down and lock out the machine spindle before changing inserts. Use the appropriate Torx or hex key as specified by the toolholder manufacturer when tightening the clamping screw — do not overtighten. Inspect the insert seat and clamping screw for damage or debris before seating a new insert.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: TCMT1.81.50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: TCMT 09 02 02-KF 3210\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: T - Triangle, 60 degrees included angle\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: 3210\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\u003eCorner Radius\u003c\/strong\u003e: 0.20 mm (0.0079 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 5.71 mm (0.2188 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 2.38 mm (0.0937 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 2.50 mm (0.0984 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 9.17 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: KF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker Operation\u003c\/strong\u003e: Finishing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSide Clearance\u003c\/strong\u003e: Positive\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\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron (ISO group K)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CoroTurn 107\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 3.74 x 1.54 x 0.09 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0022 pounds\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: 6868346\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51737125454130,"sku":"6868346","price":203.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0f905d7cb5b22992a7bfd83ee6417d67_0a44ea4e-42a2-42a1-b635-a68486b934bd.jpg?v=1788784619","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-6868346-turning-insert-tcmt1-81-50-kf","provider":"Voomi Supply","version":"1.0","type":"link"}