{"product_id":"sumitomo-166qejk-pcbn-turning-insert-80-degree-diamond","title":"Sumitomo 166QEJK Pcbn Turning Insert 80 Degree Diamond","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO 166QEJK is a polycrystalline cubic boron nitride (PCBN) turning insert designed for high-speed machining of hard and abrasive workpiece materials. It carries the ANSI designation 2NCCNGA432 and ISO code 2NC-CNGA120408, placing it in the CNG series with a diamond (C) insert shape. The insert features a TiCN coating applied via PVD process, a negative rake geometry, and a neutral hand orientation. With a 0.5 inch inscribed circle and a 0.03125 inch corner radius, it is suited for precision turning operations where tight tolerances and tool life are critical. Two cutting edges are available per insert.\u003c\/p\u003e\u003cp\u003eThis insert is intended for turning applications on cast iron, steel, and superalloy workpieces. It is commonly used in production turning on CNC lathes and turning centers where PCBN tooling is specified for extended tool life, high surface finish requirements, or hard-turning operations that would rapidly wear carbide. The CNGA-style insert seats into standard clamp-and-pin toolholders. It is appropriate for both roughing and finishing passes depending on depth of cut and feed rate selection.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePCBN insert material for hard and abrasive workpiece capability in cast iron, steel, and superalloy\u003c\/li\u003e\n\u003cli\u003eTiCN coating via PVD process for improved wear resistance and surface integrity\u003c\/li\u003e\n\u003cli\u003e80 degree diamond insert shape provides a strong cutting edge with good approach angle flexibility\u003c\/li\u003e\n\u003cli\u003eNegative rake geometry supports interrupted cuts and robust edge strength\u003c\/li\u003e\n\u003cli\u003e0 degree relief angle (clearance code N) with tolerance code G for consistent seating accuracy\u003c\/li\u003e\n\u003cli\u003eTwo cutting edges per insert for cost-effective tooling usage\u003c\/li\u003e\n\u003cli\u003eCompatible with standard clamp and pin insert holding systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard CNGA-style clamp-and-pin toolholders accepting a 432 insert size with a 0.2031 inch hole diameter. Conforms to ANSI and ISO 13399 standards. Verify toolholder specifications before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePCBN turning inserts should be installed by a qualified machinist or tooling technician familiar with indexable insert tooling. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or indexing the insert. Use the appropriate torque wrench per toolholder manufacturer specifications when tightening the clamp screw. Inspect the insert pocket and locating pin for wear or debris before each insert change to maintain accurate seating and prevent premature edge failure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI Code\u003c\/strong\u003e: 2NCCNGA432\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: 2NC-CNGA120408\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Polycrystalline Cubic Boron Nitride (PCBN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond (80 degrees included angle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: BNC2010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.03125 inches (1\/32 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches (3\/16 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.0945 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\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\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\u003eNumber of Cutting Edges\u003c\/strong\u003e: 2\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\u003eChip Breaker\u003c\/strong\u003e: A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Cast Iron, Steel, Superalloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CNG\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\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: SUMITOMO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 166QEJK\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51748259922226,"sku":"166QEJK","price":103.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3789b447742d9977d40b69f72feaaddb.jpg?v=1788891283","url":"https:\/\/voomisupply.com\/products\/sumitomo-166qejk-pcbn-turning-insert-80-degree-diamond","provider":"Voomi Supply","version":"1.0","type":"link"}