{"product_id":"kennametal-5591149-tcmt2151lf-carbide-turning-insert","title":"Kennametal 5591149 TCMT2151LF Carbide Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 5591149 is a solid carbide turning insert with ANSI code TCMT2151LF and grade KCM25B, designed for precision metal removal on CNC lathes and turning centers. The insert features a triangular (T) shape with a 60-degree included angle, a 1\/4 inch inscribed circle, and a 1\/64 inch corner radius. Its multilayer CVD coating — TiCN \/ Al2O3 \/ TiOCN applied via MTCVD process — provides a combination of high toughness on steel and moderate wear resistance on stainless steel. The LF chip breaker geometry targets finishing and light machining passes, where consistent chip control and surface finish matter most. The screw-on holding method keeps setup repeatable across tool changes.\u003c\/p\u003e\u003cp\u003eThis insert is suited for turning, facing, and boring operations on steel, stainless steel, superalloys, and titanium. The KCM25B grade is rated for ISO material groups P (steel, high toughness) and M (stainless steel, moderate wear resistance and toughness), making it a versatile choice for job shops and production environments handling mixed material workloads. With three cutting edges per insert and a neutral hand orientation, it fits standard TCMT-style toolholders in both ANSI and ISO configurations. Typical applications include light finishing passes where dimensional accuracy and surface integrity are the primary objectives.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTCMT triangular insert shape with 60-degree included angle and positive rake geometry\u003c\/li\u003e\n\u003cli\u003eKCM25B grade with multilayer MTCVD coating: TiCN \/ Al2O3 \/ TiOCN\u003c\/li\u003e\n\u003cli\u003eLF chip breaker optimized for finishing and light machining operations\u003c\/li\u003e\n\u003cli\u003eThree cutting edges per insert with neutral hand orientation\u003c\/li\u003e\n\u003cli\u003ePositive side clearance (C) and honed cutting edge style for clean entry and edge integrity\u003c\/li\u003e\n\u003cli\u003eCompatible with both ANSI (TCMT2151) and ISO (TCMT110204) toolholder systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in TCMT-style screw-on toolholders conforming to ANSI and ISO standards. Suitable for steel (P group) and stainless steel (M group) workpiece materials per ISO classification. Check toolholder manufacturer documentation to confirm pocket geometry and screw size before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before seating or indexing the insert. Use the appropriate Torx or hex key to torque the clamping screw according to the toolholder manufacturer specification — do not over-tighten, as this can fracture the carbide. Verify insert seating, pocket cleanliness, and edge orientation before resuming cutting operations.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: TCMT2151\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: TCMT110204\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: T - Triangle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 1\/64 inch (0.0156 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3\/32 inch (0.0938 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.4331 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.1442 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1102 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 5 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Clearance\u003c\/strong\u003e: Positive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Honed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: LF (Finishing \/ Light Machining)\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: KCM25B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN \/ Al2O3 \/ TiOCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: MTCVD (CVD Classification)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHolding Method\u003c\/strong\u003e: Screw-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 3\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\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\u003eMaterial Grade\u003c\/strong\u003e: C1, C2\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: 5591149\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51738273448242,"sku":"5591149","price":50.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7278cb0b5284e66aa700eeb825becf0c_b723947f-4fca-44fd-9612-9ed22a3bff43.jpg?v=1788797483","url":"https:\/\/voomisupply.com\/products\/kennametal-5591149-tcmt2151lf-carbide-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}