{"product_id":"kennametal-5591973-cnmg643rn-kcp40b-turning-insert","title":"Kennametal 5591973 CNMG643RN KCP40B Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 5591973 is a solid carbide turning insert in the KENLOC series, designated by ANSI code CNMG643RN and ISO code CNMG190612RN. It features a multilayer CVD coating — TiN, TiCN, and Al2O3 — applied via MTCVD process, giving it strong wear resistance and toughness across a range of cutting conditions. The insert carries an 80-degree diamond (rhombic) shape with a neutral hand orientation and a negative rake and side clearance. With four usable cutting edges and a chamfered and honed edge style, this insert is suited for roughing and medium machining operations on steel and stainless steel workpieces. Machinists and CNC operators working in production turning environments will find this a practical workhorse insert for general turning, facing, and boring.\u003c\/p\u003e\u003cp\u003eThis insert is designed for turning, facing, and boring applications on steel (ISO P) and stainless steel (ISO M) workpieces. Its KCP40B grade provides high toughness for steel and moderate wear resistance and toughness for stainless steel, making it appropriate for a range of stock removal passes where interrupted cuts or variable surface conditions are a factor. It fits KENLOC-compatible toolholders that accept CNMG-style inserts held by clamp or pin methods. Typical applications are found in production machine shops and industrial maintenance environments where consistent, repeatable material removal is required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eANSI code CNMG643RN \/ ISO code CNMG190612RN — dual-standard identification for global toolholder compatibility\u003c\/li\u003e\n\u003cli\u003eKCP40B grade with multilayer CVD coating (TiN \/ TiCN \/ Al2O3) for toughness on steel and stainless steel\u003c\/li\u003e\n\u003cli\u003e80-degree diamond insert shape provides a strong cutting edge geometry for roughing and medium machining\u003c\/li\u003e\n\u003cli\u003eFour cutting edges maximize insert utilization and reduce per-edge tooling cost\u003c\/li\u003e\n\u003cli\u003eNeutral hand orientation with negative rake and negative side clearance for use in standard CNMG toolholders\u003c\/li\u003e\n\u003cli\u003eChamfered and honed cutting edge style reduces chipping risk during entry and interrupted cuts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in KENLOC-series toolholders and other compatible CNMG-style clamping systems that accept clamp or pin insert holding methods. Conforms to ANSI and ISO standards for CNMG insert geometry.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert replacement should be performed by a qualified machinist or toolroom technician with the machine fully stopped and all moving components secured. Use the appropriate torque wrench and seating tool specified for the KENLOC clamp or pin system to avoid cracking the carbide substrate. Inspect the insert pocket and clamp for wear or debris before seating a new insert. Follow the toolholder manufacturer's clamping procedure to ensure correct edge presentation and prevent premature insert failure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: CNMG643\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: CNMG190612\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard Number\u003c\/strong\u003e: CNMG643RN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CNMG190612RN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KCP40B\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: TiN \/ TiCN \/ Al2O3 (Multilayer CVD, MTCVD process)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: C - Diamond (Rhombic) 80 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 0 degrees (Negative Rake)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Clearance\u003c\/strong\u003e: Negative\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\u003eChip Breaker\u003c\/strong\u003e: RN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker Operation\u003c\/strong\u003e: Roughing and Medium Machining\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Chamfered and Honed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 3\/4 inch (0.7500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 19.34 mm (0.7616 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 3\/64 inch (0.0469 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.3125 inches (7.93 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.2536 inches\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: Steel (ISO P), Stainless Steel (ISO M)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C5, C6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: KENLOC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Use Application\u003c\/strong\u003e: Turning, Facing, Boring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO\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 (minimum order quantity: 5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5591973\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51755269849394,"sku":"5591973","price":367.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6d42d9d5685df18993ebf34d8df8c5cc_40e92e16-9f98-4b14-b3e6-661c566a1f56.jpg?v=1788952922","url":"https:\/\/voomisupply.com\/products\/kennametal-5591973-cnmg643rn-kcp40b-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}