{"product_id":"kennametal-4109850-grooving-insert-kcu25-solid-carbide","title":"Kennametal 4109850 Grooving Insert KCU25 Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4109850 is a solid carbide grooving insert designed for precision external grooving and parting operations on CNC lathes and turning centers. Built to the Top Notch series standard, this insert features an AlTiN (aluminum titanium nitride) coating applied via PVD process, which delivers enhanced heat resistance and wear performance in demanding cutting conditions. The left-hand orientation, 4.80 mm cutting width, and 6.35 mm maximum depth of cut make it well suited for controlled grooving passes where dimensional accuracy is critical. It is installed and used by machinists and toolroom professionals working in production turning environments.\u003c\/p\u003e\u003cp\u003eThis insert is intended for use in Top Notch series toolholders that accept the NGD-style clamp-mount insert. The left-hand configuration suits applications where the tool approaches the workpiece from the right side of the turret. Typical use cases include external groove profiling, undercut operations, and part-off sequences on bar-fed or chucked workpieces in ferrous and non-ferrous materials. The KCU25 grade is formulated for a broad range of workpiece materials, making this insert a practical choice across general-purpose turning applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction with PVD-applied AlTiN coating for extended tool life\u003c\/li\u003e\n\u003cli\u003e4.80 mm cutting width with a 0.57 mm corner radius for controlled groove geometry\u003c\/li\u003e\n\u003cli\u003e6.35 mm maximum depth of cut supports deep grooving within the 5.00 to 10.00 mm depth range\u003c\/li\u003e\n\u003cli\u003eLeft-hand insert hand for right-to-left grooving approach\u003c\/li\u003e\n\u003cli\u003eK-style chip breaker geometry promotes chip control during grooving passes\u003c\/li\u003e\n\u003cli\u003eClamp-style insert holding method ensures rigid, repeatable seating in the toolholder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Top Notch series toolholders accepting NGD-style inserts with clamp-type retention. Confirm holder geometry and insert pocket dimensions against the NGD3189 insert specification before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of grooving inserts should be performed with the machine spindle stopped and all motion axes locked. Seat the insert fully into the toolholder pocket and verify clamp torque using the toolholder manufacturer's recommended procedure. Inspect the insert seat and clamp for debris or wear before each insert change. Do not exceed the maximum depth of cut rating for the insert or the toolholder to avoid insert fracture or toolholder damage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NGD\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: 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 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\u003eCutting Height\u003c\/strong\u003e: 8.74 mm (0.3440 inches)\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: 3189\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 55 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: K\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\u003eWeight\u003c\/strong\u003e: 0.025 pounds\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: 4109850\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51742443897138,"sku":"4109850","price":203.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6129bdb1d13b728403f75d14b81f62e0.jpg?v=1788837501","url":"https:\/\/voomisupply.com\/products\/kennametal-4109850-grooving-insert-kcu25-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}