{"product_id":"sumitomo-16fsw34-pcbn-turning-insert-1-4-inch-ic-triangle","title":"Sumitomo 16FSW34 Pcbn Turning Insert 1\/4 Inch Ic Triangle","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO 16FSW34 is a polycrystalline cubic boron nitride (PCBN) turning insert designed for high-speed precision machining of difficult-to-cut materials. This uncoated, bright-finish insert features a triangular shape with a 60-degree included angle, a 1\/4-inch inscribed circle, and a 1\/32-inch corner radius. It carries manufacturer grade BN700 and belongs to Series T. The insert is screw-held with positive rake geometry and a 7-degree relief angle, making it well suited for demanding finish and semi-finish turning applications where edge integrity and thermal resistance are critical. Machinists and tooling technicians are the primary installers.\u003c\/p\u003e\u003cp\u003eThis insert is intended for turning cast iron and superalloy workpieces where conventional carbide tooling reaches its performance limits. It is used in CNC turning centers and manual lathes where high cutting speeds generate significant heat at the tool-workpiece interface. The 3NU-TCGA insert style and TCGW110208 ISO code make it compatible with standard TCGA-style toolholders. The maximum depth of cut is 0.015 inches, making this insert best suited for light finishing passes rather than heavy stock removal. It is a single-piece, minimum-order-quantity unit appropriate for job shop and production environments alike.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePCBN grade BN700 uncoated construction for high thermal hardness in cast iron and superalloy turning\u003c\/li\u003e\n\u003cli\u003eTriangular insert shape with 3 cutting edges for extended tool life per insert\u003c\/li\u003e\n\u003cli\u003e1\/4-inch inscribed circle with 1\/32-inch corner radius for controlled surface finish\u003c\/li\u003e\n\u003cli\u003ePositive rake geometry with 7-degree relief angle reduces cutting forces\u003c\/li\u003e\n\u003cli\u003eScrew-holding method provides secure, repeatable seating in the toolholder pocket\u003c\/li\u003e\n\u003cli\u003eCompliant with ANSI and ISO 13399 standards for tooling data interoperability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in TCGA-style screw-clamp toolholders accepting a triangular insert with a 0.110-inch hole diameter. ISO code 3NU-TCGW110208 and insert size code 21.52 identify the correct toolholder family. Primary workpiece materials are cast iron (ISO material code K) and superalloys (ISO material code S).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis insert is installed by qualified machinists or tooling technicians using the appropriate torx or hex key to seat the clamping screw to the toolholder manufacturer's specified torque. Always index or replace the insert with the machine spindle fully stopped and the machine in a locked-out, energy-isolated state per OSHA lockout\/tagout procedures. Inspect the toolholder pocket for chips or damage before seating a new insert edge. Do not exceed the maximum depth of cut specification, as PCBN inserts are brittle and susceptible to edge chipping under interrupted cuts or excessive loads without confirmed application data.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: BN700\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Triangle\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: 3NU-TCGA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: 3NU-TCGW110208\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.25 inches (1\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0313 inches (1\/32 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.0938 inches (3\/32 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.110 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Positive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Superalloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO 13399\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 16FSW34\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51746989703474,"sku":"16FSW34","price":138.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6fdd61c1cc2342c5ee719e4fd8a4019a.jpg?v=1788875149","url":"https:\/\/voomisupply.com\/products\/sumitomo-16fsw34-pcbn-turning-insert-1-4-inch-ic-triangle","provider":"Voomi Supply","version":"1.0","type":"link"}