{"product_id":"sumitomo-u100100-pcbn-turning-insert-bn250-triangle","title":"Sumitomo U100100 Pcbn Turning Insert BN250 Triangle","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SUMITOMO U100100 is a single-tipped Polycrystalline Cubic Boron Nitride (PCBN) turning insert in the NUTNMA432 style, grade BN250, left uncoated for direct application. The triangular insert carries a 60-degree included angle, a 0.5-inch inscribed circle, and a 0.03125-inch (1\/32 inch) corner radius. It runs a negative rake geometry with a neutral hand orientation and a clearance code of N, tolerance code M. This insert is installed by machinists and toolroom technicians on CNC or manual turning centers where conventional carbide grades lose performance against hard or abrasive workpiece materials.\u003c\/p\u003e\n\u003cp\u003eThis insert is engineered for turning operations on cast iron, hard materials, and superalloys, corresponding to ISO workpiece material groups K, H, and S. The NUTNMA432 geometry with the A chip breaker is suited to finishing and light semi-finishing passes where consistent edge geometry and tight tolerances are required. Its single cutting edge design focuses performance on one precisely ground tip, making it appropriate for applications where edge repeatability is critical. The ISO equivalent designation is NU-TNMA220408 and it conforms to both ANSI and ISO 13399 standards.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePolycrystalline Cubic Boron Nitride (PCBN) insert material for hard and abrasive workpiece cutting\u003c\/li\u003e\n  \u003cli\u003eUncoated BN250 grade — no coating process applied, preserving as-sintered edge sharpness\u003c\/li\u003e\n  \u003cli\u003e60-degree triangular shape (insert shape code T) with negative rake for strong edge support\u003c\/li\u003e\n  \u003cli\u003eSingle tipped construction for focused, repeatable cutting edge performance\u003c\/li\u003e\n  \u003cli\u003eCompatible holding method: clamp and pin, NUTNMA432 style toolholder\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI and ISO 13399 standards for interchangeability and documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in NUTNMA432-style toolholders that accept a triangular PCBN insert with a 0.2031-inch hole diameter and clamp-plus-pin holding. Suitable for turning centers running cast iron, hard materials (50+ HRC), and superalloy workpieces in ISO material groups K, H, and S.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert seating and clamping should be performed with the machine fully powered down and the spindle locked. Verify that the toolholder pocket and locating pin are clean and free of chips before seating the insert. PCBN inserts are brittle — avoid impacts against the cutting edge during handling or installation. Follow the toolholder manufacturer torque specifications for the clamping screw; do not exceed the recommended clamping force.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Polycrystalline Cubic Boron Nitride (PCBN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: BN250\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Triangle (Shape Code T)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NU-TNMA432\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: TNM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5 inches (12.70 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.03125 inches (1\/32 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches (3\/16 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.0787 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.2031 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.0150 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake\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\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Multi Tipped\u003c\/strong\u003e: Single Tipped\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: Cast Iron, Hard Material, Superalloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material Code\u003c\/strong\u003e: H, K, S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Code\u003c\/strong\u003e: NUTNMA432\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: NU-TNMA220408\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO 13399\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: SUMITOMO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: U100100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51749776752946,"sku":"U100100","price":56.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/08cc4929832b337a0afe4b9ac8bab8b3.jpg?v=1788910353","url":"https:\/\/voomisupply.com\/products\/sumitomo-u100100-pcbn-turning-insert-bn250-triangle","provider":"Voomi Supply","version":"1.0","type":"link"}