{"product_id":"kennametal-4109856-grooving-insert-kcu25-solid-carbide-altin","title":"Kennametal 4109856 Grooving Insert KCU25 Solid Carbide Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4109856 is a solid carbide grooving insert designed for precision external grooving and turning operations on CNC lathes and turning centers. Carrying the KCU25 manufacturer grade with a PVD-applied AlTiN coating, this insert delivers thermal and wear resistance in demanding cutting conditions. It features a 0.250-inch (6.35 mm) cutting width and a maximum depth of cut of 0.500 inches (12.70 mm), making it suited for medium to deep grooving passes. The left-hand cutting orientation and K chip breaker geometry are configured for specific toolholder setups and chip control requirements. Machinists and CNC operators install this insert as part of the Top Notch series tooling system.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended for use in production and job-shop turning environments where consistent groove geometry and surface finish are required. It fits within the Top Notch series, a clamp-style insert system commonly used on CNC turning centers handling ferrous and non-ferrous materials. The depth of cut range of 0.300 to 1.000 inches (10.00 to 20.00 mm) supports a range of grooving applications from shallow relief grooves to deeper profile cuts. The 55-degree included angle and 0.0225-inch (0.57 mm) corner radius define the insert geometry at the cutting edge. Installation is performed by CNC machinists and tooling specialists using standard Top Notch compatible toolholders.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction with PVD AlTiN coating for thermal wear resistance\u003c\/li\u003e\n  \u003cli\u003eKCU25 grade optimized for a balance of toughness and hardness in grooving applications\u003c\/li\u003e\n  \u003cli\u003e0.250-inch (6.35 mm) cutting width with maximum depth of cut of 0.500 inches (12.70 mm)\u003c\/li\u003e\n  \u003cli\u003eLeft-hand cutting orientation with K chip breaker for controlled chip evacuation\u003c\/li\u003e\n  \u003cli\u003eCorner radius of 0.0225 inches (0.57 mm) with 55-degree included angle geometry\u003c\/li\u003e\n  \u003cli\u003eClamp-style insert holding method compatible with Top Notch series toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Top Notch series clamp-style toolholders accepting insert seat size 4 and insert size 4250. The MSC\/Manufacturer reference number for this insert is NGD4250R\/LK. Verify toolholder hand orientation and seat size before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified CNC machinist or tooling technician with the machine in a full stop, locked-out condition before accessing the turret or toolholder. Use the appropriate torque wrench and clamp hardware specified for the Top Notch toolholder to secure the insert without over-tightening. Inspect the insert seat and clamp for debris or wear before seating the new insert. Confirm left-hand orientation matches the programmed toolpath direction before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 0.2500 inches (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.5000 inches (12.70 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut Range\u003c\/strong\u003e: 0.300 to 1.000 inches (10.00 to 20.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0225 inches (0.57 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 55 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Height\u003c\/strong\u003e: 0.4530 inches (11.51 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 0.256 inches (6.50 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size\u003c\/strong\u003e: 4250\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Seat Size\u003c\/strong\u003e: 4\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\u003eMaterial Grade\u003c\/strong\u003e: C2, C6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Radius\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 11.8 x 3.9 x 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242105\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 4109856\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51729703502130,"sku":"4109856","price":257.22,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0718183a9f9f7617c24f7e0c062c3035.jpg?v=1788708082","url":"https:\/\/voomisupply.com\/products\/kennametal-4109856-grooving-insert-kcu25-solid-carbide-altin","provider":"Voomi Supply","version":"1.0","type":"link"}