{"product_id":"kennametal-4109789-grooving-insert-kcu25-altin-top-notch","title":"Kennametal 4109789 Grooving Insert KCU25 Altin Top Notch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4109789 is a solid carbide grooving insert in the Top Notch series, designed for external grooving and parting operations on CNC lathes and turning centers. The insert carries a KCU25 grade with a PVD-applied AlTiN coating, delivering heat and wear resistance suited to interrupted cuts and moderate-to-hard workpiece materials. It features a right-hand cutting orientation, a 2.24 mm cutting width, and a maximum depth of cut of 2.39 mm. The 55-degree included angle and 0.19 mm corner radius make it appropriate for tight-tolerance groove profiles in production turning environments. Machinists and CNC operators working in job shops or production facilities are the primary installers of this insert type.\u003c\/p\u003e\u003cp\u003eThis insert is used in external grooving, recessing, and light parting applications on turning centers where the Top Notch clamping system is in use. It is suited for ferrous and non-ferrous materials where an AlTiN-coated carbide grade is appropriate. The 2.00 mm to 3.00 mm maximum depth-of-cut range and the 8.74 mm cutting height define the envelope of operations this insert handles. It is sold individually with a minimum order quantity of 5 units per purchase.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eKCU25 solid carbide grade with PVD AlTiN coating for wear and heat resistance\u003c\/li\u003e\n\u003cli\u003e2.24 mm cutting width with a maximum depth of cut of 2.39 mm\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting orientation for standard external grooving setups\u003c\/li\u003e\n\u003cli\u003e0.19 mm corner radius for controlled groove profile geometry\u003c\/li\u003e\n\u003cli\u003eClamp-style insert holding method compatible with Top Notch toolholders\u003c\/li\u003e\n\u003cli\u003e55-degree included angle for precise groove wall definition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Top Notch series clamping-style toolholders that accept NG3088 insert geometry. The MSC and manufacturer cross-reference number for this insert is NG3088R\/L.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis insert is installed by machinists or CNC operators using the clamp-style Top Notch toolholder system. Power down and lock out the machine spindle before seating or replacing inserts. Use the correct torque wrench and clamping hardware specified by the toolholder manufacturer — do not substitute fasteners. Inspect the insert pocket and clamp for chips or damage before each insert change to maintain secure seating and dimensional accuracy.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Top Notch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KCU25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Width\u003c\/strong\u003e: 2.24 mm (0.0882 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 2.39 mm (0.0941 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut Range\u003c\/strong\u003e: 2.00 mm to 3.00 mm (0.0750 to 0.1000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Height\u003c\/strong\u003e: 8.74 mm (0.3440 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.19 mm (0.0075 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 55 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 4.98 mm (0.196 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size\u003c\/strong\u003e: 3088\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Radius\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C2, C6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Type\u003c\/strong\u003e: Metric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 9.3 x 4.0 x 1.3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.025 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Package Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242105\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: 4109789\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51732502118706,"sku":"4109789","price":219.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/12fc87abf6d2a79254f065879c8fb221_cf8d5405-83ae-4505-9c54-fec876660631.jpg?v=1788743679","url":"https:\/\/voomisupply.com\/products\/kennametal-4109789-grooving-insert-kcu25-altin-top-notch","provider":"Voomi Supply","version":"1.0","type":"link"}