{"product_id":"kennametal-1113909-grooving-insert-ng4189-kc850-carbide","title":"Kennametal 1113909 Grooving Insert NG4189 KC850 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 1113909 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 CVD-applied multilayer coating of TiC, TiCN, and TiN, which builds wear resistance and thermal stability across a range of cutting conditions. It is sized at NG4189 with a 4.80 mm cutting width and a maximum depth of cut of 6.35 mm. The left-hand orientation and neutral rake geometry make it a direct selection for left-hand toolholders in production turning environments. Machinists and CNC operators working in job shops or high-volume production facilities are the primary installers.\u003c\/p\u003e\u003cp\u003eThis insert is suited for grooving operations on steel and cast iron workpieces where the KC850 carbide grade performs reliably. The material grade rating of C5 and C6 positions it for general-purpose turning and finishing on ferrous materials. The Top Notch series design provides a positive seat engagement, reducing insert movement during interrupted or continuous grooving passes. A lead angle of 3 degrees and a corner radius of 0.57 mm contribute to controlled chip formation and surface finish consistency in moderate to high feed-rate applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: TiC, TiCN, and TiN for enhanced wear and heat resistance\u003c\/li\u003e\n\u003cli\u003e4.80 mm cutting width with a maximum depth of cut of 6.35 mm\u003c\/li\u003e\n\u003cli\u003eLeft-hand orientation with neutral rake geometry\u003c\/li\u003e\n\u003cli\u003eTop Notch series insert seat size 4 for secure toolholder engagement\u003c\/li\u003e\n\u003cli\u003eCorner radius of 0.57 mm for controlled surface finish\u003c\/li\u003e\n\u003cli\u003eMaterial grade C5 and C6 for general-purpose ferrous machining\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with KENNAMETAL Top Notch series toolholders accepting insert seat size 4 and NG-style inserts. Verify toolholder hand orientation before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert installation and indexing should be performed by a qualified machinist or CNC operator with the machine fully powered down and the spindle locked. Use the correct torque wrench and clamping screw specified for the Top Notch toolholder to seat the insert properly. Inspect the insert pocket for debris or damage before seating a new insert. Do not exceed the rated maximum depth of cut for the insert size in use.\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: 4189\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: KC850\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C5, C6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Finish\u003c\/strong\u003e: TiC, TiCN, TiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Width\u003c\/strong\u003e: 4.80 mm (0.1890 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 6.35 mm (0.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut Range\u003c\/strong\u003e: 5.00 mm to 10.00 mm (0.2000 to 0.3000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.57 mm (0.0225 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: 3 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Seat Size\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Radius\u003c\/strong\u003e: No\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\u003eWeight\u003c\/strong\u003e: 0.0498 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 5\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: 1113909\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51736857968946,"sku":"1113909","price":377.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ea1e6435e058deffd80cbe3fc7625880.jpg?v=1788781153","url":"https:\/\/voomisupply.com\/products\/kennametal-1113909-grooving-insert-ng4189-kc850-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}