{"product_id":"kennametal-3758136-cnma434-kck20-carbide-turning-insert","title":"Kennametal 3758136 CNMA434 KCK20 Carbide Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 3758136 is a solid carbide turning insert in the CNMA434 geometry, designed for high-productivity metal cutting on CNC lathes and turning centers. It carries the KCK20 manufacturer grade and features a multilayer PVD coating combining AlTiN and AlCrN for heat resistance and wear performance at the cutting edge. The insert has an 80-degree diamond shape with a neutral hand orientation and a flat-top chip breaker. The cutting edge is honed with a zero-degree rake angle and a zero-degree relief angle. With four available cutting edges per insert, it delivers consistent performance across turning, facing, and boring operations on steel and cast iron workpieces.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for both roughing and general-purpose turning applications in ferrous materials, including steel and cast iron, corresponding to ISO material groups P and K. The CNMA style with clamp and pin holding method is common in heavy-duty turning setups where rigid clamping and depth-of-cut stability are required. It is used by machinists and toolroom professionals in production environments running moderate to high cutting parameters. The KENLOC series designation indicates compatibility with KENNAMETAL KENLOC-style toolholders designed for CNMA insert geometry.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMultilayer AlTiN and AlCrN PVD coating for wear resistance in steel and cast iron cutting\u003c\/li\u003e\n  \u003cli\u003e80-degree diamond insert shape provides a strong cutting edge for turning and facing\u003c\/li\u003e\n  \u003cli\u003eFour cutting edges per insert maximize tooling economy\u003c\/li\u003e\n  \u003cli\u003eFlat-top chip breaker with honed cutting edge for consistent chip control\u003c\/li\u003e\n  \u003cli\u003eClamp and pin holding method for secure, repeatable seating in compatible toolholders\u003c\/li\u003e\n  \u003cli\u003eMulti-use capability across turning, facing, and boring operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in KENNAMETAL KENLOC-style toolholders accepting CNMA-geometry inserts. Compatible with applications involving steel and cast iron workpieces (ISO material groups P and K). Conforms to ANSI and ISO standards for CNMA434 insert geometry.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or toolroom technicians. Power down and de-energize the machine before changing inserts. Seat the insert fully against the toolholder pocket before engaging the clamp and pin to prevent movement under cutting load. Index to a fresh cutting edge when flank wear or edge chipping is observed rather than running the edge to failure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustry Standard Number\u003c\/strong\u003e: CNMA434\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KCK20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond 80 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: CNMA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 12.90 mm (0.5077 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.2031 inches (5.16 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 1.25 mm (0.0492 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN and AlCrN Multilayer PVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: Flat Top\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Honed\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: K10 and K25\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and Pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel and Cast Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: KENLOC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI and ISO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Use Application\u003c\/strong\u003e: Turning, Facing, Boring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\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: 3758136\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51739733360946,"sku":"3758136","price":180.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd3b0019868a88efa5ed7cfc962c9f8f.jpg?v=1788818329","url":"https:\/\/voomisupply.com\/products\/kennametal-3758136-cnma434-kck20-carbide-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}