{"product_id":"kennametal-4109681-grooving-insert-ng2125-kcu25-carbide","title":"Kennametal 4109681 Grooving Insert NG2125 KCU25 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4109681 is a solid carbide grooving insert in the Top Notch series, designed for precision grooving and parting operations on CNC lathes and turning centers. Built to the NG2125 insert style with a KCU25 grade and PVD-applied AlTiN coating, this insert delivers reliable wear resistance and thermal stability in demanding interrupted-cut and high-speed turning applications. The left-hand configuration provides a 3.18 mm cutting width and a maximum depth of cut of 2.79 mm. The 55-degree included angle and 0.19 mm corner radius support controlled chip formation in metalcutting environments where dimensional consistency is critical. Installed by machinists and CNC setup technicians across job shops and production facilities.\u003c\/p\u003e\u003cp\u003eThis insert is suited for metric-dimensioned grooving applications on ferrous and non-ferrous workpieces where a left-hand cutting orientation is required. The Top Notch series uses a clamp-style insert holding method, making it compatible with Top Notch toolholders designed for NG-style inserts. Typical applications include external grooving, undercut profiling, and light parting on small-diameter workpieces. The AlTiN PVD coating extends tool life in dry and semi-dry cutting conditions, reducing the need for coolant in many operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide substrate with KCU25 manufacturer grade for toughness and edge retention\u003c\/li\u003e\n\u003cli\u003ePVD AlTiN coating for high-temperature wear resistance in dry or semi-dry cutting\u003c\/li\u003e\n\u003cli\u003eLeft-hand cutting orientation with 3.18 mm cutting width\u003c\/li\u003e\n\u003cli\u003eMaximum depth of cut 2.79 mm, rated for the 2.00 to 3.00 mm depth-of-cut range\u003c\/li\u003e\n\u003cli\u003e0.19 mm corner radius for controlled workpiece surface finish\u003c\/li\u003e\n\u003cli\u003eClamp-style retention compatible with Top Notch series toolholding systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Top Notch series clamp-style toolholders that accept NG-style grooving inserts. The MSC\/Manufacturer cross-reference number for this insert is NG2125R\/L.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis insert is installed by qualified machinists or CNC tooling technicians. Before changing inserts, power down the machine spindle and engage all axis locks per standard lockout\/tagout procedures. Seat the insert fully in the toolholder pocket before tightening the clamp to ensure proper cutting geometry and edge presentation. Inspect the toolholder pocket for wear or debris before each insert change to avoid seating errors.\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\u003eInsert Size\u003c\/strong\u003e: 2125\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: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Width\u003c\/strong\u003e: 3.18 mm (0.1252 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 2.79 mm (0.1098 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut Range\u003c\/strong\u003e: 2.00 to 3.00 mm (0.1000 to 0.1500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Height\u003c\/strong\u003e: 5.56 mm (0.2190 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 3.84 mm (0.151 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\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\u003eUNSPSC Code\u003c\/strong\u003e: 23242105\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: 4109681\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51754461823282,"sku":"4109681","price":248.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0413c006f3ab300bdc6b801b6e89b65a.jpg?v=1788945655","url":"https:\/\/voomisupply.com\/products\/kennametal-4109681-grooving-insert-ng2125-kcu25-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}