{"product_id":"kennametal-4053408-rnmg43rn-kcu10-round-carbide-turning-insert","title":"Kennametal 4053408 RNMG43RN KCU10 Round Carbide Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4053408 is a solid carbide turning insert carrying the ANSI designation RNMG43RN and ISO designation RNMG120400RN, manufactured under the KENLOC series and finished with a PVD-applied TiAlN (AlTiN) coating. The insert features a full-radius round shape with an inscribed circle of 0.5 inches and a thickness of 0.1875 inches, delivering 8 usable cutting edges per insert. The KCU10 grade is engineered for high wear resistance to moderate wear resistance and toughness, making it a direct choice for roughing and medium machining operations on steel, stainless steel, cast iron, and superalloys and titanium. It is installed by machinists and CNC turning specialists on lathes and turning centers.\u003c\/p\u003e\u003cp\u003eThis insert is suited for lathe-based operations including turning, facing, and boring on a range of workpiece materials identified under ISO material codes P, M, K, N, S, and H. The round insert geometry provides continuous cutting edge availability and equal load distribution, which is particularly advantageous in interrupted-cut conditions and when profile turning with variable engagement angles. The RN chip breaker geometry is optimized for roughing and medium material removal rates. Typical applications include general turning on steel and stainless steel components in job shop and production machining environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFull-radius round insert shape (RNMG) with 8 cutting edges per insert for extended tool life\u003c\/li\u003e\n\u003cli\u003eKCU10 grade with PVD TiAlN coating — high wear resistance targeting steel, stainless steel, and cast iron\u003c\/li\u003e\n\u003cli\u003eRN chip breaker designed for roughing and medium machining operations\u003c\/li\u003e\n\u003cli\u003eCompatible with clamp and pin insert-holding methods for secure seating\u003c\/li\u003e\n\u003cli\u003eNegative rake and neutral hand geometry; side clearance is negative (clearance code N, tolerance code M)\u003c\/li\u003e\n\u003cli\u003eMulti-use geometry supports turning, facing, and boring without insert change\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement insert conforming to ANSI size code 43 and ISO size code 120400, compatible with KENLOC-series toolholders and any standard RNMG-style insert pocket accepting a 0.5-inch inscribed circle round insert with a 0.2031-inch hole diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists using the appropriate RNMG-compatible toolholder with clamp or pin retention. Ensure the machine spindle is fully stopped and locked out before seating or indexing the insert. Confirm the insert pocket and clamping surfaces are clean and free of chips before torquing the clamping screw to the toolholder manufacturer's specified value. Maximum depth of cut should not exceed 0.1665 inches per the insert geometry limits.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: RNMG43\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: RNMG120400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard Number\u003c\/strong\u003e: RNMG43RN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: RNMG120400RN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: KENLOC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KCU10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: R - Round (Full Radius)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.2031 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.1665 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 8\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; Medium Machining\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\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\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\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Chamfered; Honed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp; Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel; Stainless Steel; Superalloys and Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material Code\u003c\/strong\u003e: P; M; K; N; S; H\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\u003eMaterial Grade\u003c\/strong\u003e: C3; C4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI; ISO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 9.5 inches (L) x 5.3 inches (W) x 1.7 inches (H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0164 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: 4053408\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51728816210226,"sku":"4053408","price":139.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9fa6bba1ec1212155c1a4c51d1aa5956.jpg?v=1788696322","url":"https:\/\/voomisupply.com\/products\/kennametal-4053408-rnmg43rn-kcu10-round-carbide-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}