{"product_id":"tungaloy-6852939-turning-insert-vnmg331-t5125-carbide","title":"Tungaloy 6852939 Turning Insert VNMG331 T5125 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe TUNGALOY 6852939 is a VNMG331 indexable turning insert designed for precision machining of cast iron workpieces. Built from solid carbide and finished with a multilayer CVD coating of TiCN, Al2O3, and TiN under the T5125 grade, this insert delivers high wear resistance with moderate toughness suited to the K15 and K30 material grade range. The 35-degree diamond (rhombic) insert shape provides a sharp, defined cutting geometry. With 4 cutting edges and a neutral hand orientation, it offers consistent performance across medium machining chip breaker conditions. Licensed machinists and CNC operators install this insert in compatible turning toolholders for production and job-shop environments.\u003c\/p\u003e\u003cp\u003eThis insert is intended for cast iron applications in the K material classification, covering grades K15 through K30. Typical operations include turning, facing, boring, back turning, and back boring on CNC lathes and turning centers. The chamfered and honed cutting edge style suits interrupted and continuous cuts in medium-stock-removal scenarios. The negative rake angle of -15 degrees and negative side clearance geometry are standard for this insert style, supporting rigid clamping in high-feed setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMultilayer CVD coating: TiCN plus Al2O3 plus TiN for extended tool life in cast iron\u003c\/li\u003e\n\u003cli\u003eT5125 grade optimized for K15 and K30 cast iron with high to moderate wear resistance\u003c\/li\u003e\n\u003cli\u003e35-degree diamond (V) insert shape with 4 usable cutting edges\u003c\/li\u003e\n\u003cli\u003eChamfered and honed cutting edge style reduces chipping at entry and exit\u003c\/li\u003e\n\u003cli\u003eCompatible with clamp and pin insert-holding methods\u003c\/li\u003e\n\u003cli\u003eMedium machining chip breaker suitable for moderate depth-of-cut and feed-rate conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard indexable insert for VNMG-style turning toolholders conforming to ANSI and ISO insert specifications. ANSI insert code VNMG331; ISO insert code VNMG160404.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torque wrench and insert clamp hardware specified by the toolholder manufacturer  -  do not overtighten clamping screws. Inspect the toolholder pocket and seating surface for wear or debris before seating a new insert.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: VNMG331\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: VNMG160404\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: T5125\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: V - Diamond (Rhombic) 35 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN, Al2O3, TiN (CVD Multilayer)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 1\/64 inches (0.0157 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 1.308 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3\/16 inches (0.1875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.150 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.2362 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: -15 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Clearance\u003c\/strong\u003e: Negative\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker Operation\u003c\/strong\u003e: Medium Machining\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron (K)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: K15, K30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp, Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Chamfered, Honed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiper Edge\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.027 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: TUNGALOY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6852939\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TUNGALOY","offers":[{"title":"Default Title","offer_id":51998137319730,"sku":"6852939","price":287.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6abd124ca598e832892217bf735e214d.jpg?v=1789994617","url":"https:\/\/voomisupply.com\/products\/tungaloy-6852939-turning-insert-vnmg331-t5125-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}