{"product_id":"sumitomo-16jrctu-pcbn-turning-insert-diamond-55-degree","title":"Sumitomo 16JRCTU Pcbn Turning Insert Diamond 55 Degree","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO 16JRCTU is an uncoated Polycrystalline Cubic Boron Nitride (PCBN) turning insert designed for precision machining of hardened steel. Cataloged under ANSI code 2NUDNGA431 and ISO code 2NU-DNGA150404, this insert features a 55-degree diamond shape, a 0.5-inch inscribed circle, and a 1\/64-inch (0.0156 inch) corner radius. The negative rake geometry and DNGA-style seating deliver controlled cutting forces and predictable tool life in demanding hard-turning applications. It is installed by machinists and CNC tooling technicians working in precision metalworking environments.\u003c\/p\u003e\u003cp\u003eThis insert is suited for hard-turning operations on hardened steel workpieces, classified under workpiece material code H. The 2NU-DNGA insert style and clamp-plus-pin holding method make it compatible with standard DNGA toolholders used in production and job-shop turning centers. With two cutting edges per insert, it offers back-up cutting capability before replacement. Typical applications include finish turning of hardened shafts, bearing races, and similar components where tight tolerances and fine surface finish are required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePCBN (Polycrystalline Cubic Boron Nitride) insert material for hard-turning performance on hardened steel\u003c\/li\u003e\n\u003cli\u003eUncoated BN2000 grade for consistent edge integrity in high-hardness workpiece materials\u003c\/li\u003e\n\u003cli\u003e55-degree diamond insert shape (Shape Code D) with negative rake for stable, chatter-resistant cuts\u003c\/li\u003e\n\u003cli\u003e0.5-inch inscribed circle and 3\/16-inch insert thickness for rigid seating in compatible toolholders\u003c\/li\u003e\n\u003cli\u003eTwo cutting edges per insert for extended tool utilization\u003c\/li\u003e\n\u003cli\u003eMeets ANSI and ISO 13399 standards for interchangeable insert identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard DNGA-style toolholders with clamp and pin holding methods. Compatible with turning centers and CNC lathes set up for negative-rake DNGA inserts with a 0.5-inch inscribed circle. Intended primary workpiece material is hardened steel (ISO material code H).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePCBN turning inserts should be seated and clamped according to the toolholder manufacturer specifications using the specified clamp-and-pin holding method. Always power down and lock out the machine spindle before changing inserts. Handle PCBN inserts carefully, as the cutting edges are brittle and susceptible to chipping from improper seating or mechanical shock. Verify toolholder and insert compatibility by confirming ANSI or ISO insert codes prior to installation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI Code\u003c\/strong\u003e: 2NUDNGA431\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: 2NU-DNGA150404\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\u003eManufacturer Grade\u003c\/strong\u003e: BN2000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond (Shape Code D)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 55.0 degrees\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: 0.0156 inches (1\/64 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: 0.0984 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.2030 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\u003eClearance Code\u003c\/strong\u003e: N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: G\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: 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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Hardened Steel (Code H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO 13399\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: 16JRCTU\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51754596139314,"sku":"16JRCTU","price":102.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2c42426f545e87d85769c75fe7e07889_570bbad5-ad0b-4746-90dc-402be1f1e422.jpg?v=1788946967","url":"https:\/\/voomisupply.com\/products\/sumitomo-16jrctu-pcbn-turning-insert-diamond-55-degree","provider":"Voomi Supply","version":"1.0","type":"link"}