{"product_id":"hertel-h59874701-boring-insert-tpch220-5-carbide-uncoated","title":"Hertel H59874701 Boring Insert TPCH220.5 Carbide Uncoated","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL H59874701 is a solid carbide boring insert designed for precision internal turning and boring operations on CNC and manual lathes. Manufactured to TPCH insert style specifications with a triangular 60-degree included angle, this uncoated grade HT540B insert delivers consistent performance in finishing and semi-finishing applications. Key dimensional specs include a 1\/4-inch inscribed circle, 3\/32-inch thickness, and a 0.007-inch corner radius, which supports tight tolerances on bore diameters. Screw-clamped holding method ensures positive retention in compatible TPCH toolholders. This insert is installed by machinists and tool-room professionals working in metalcutting environments.\u003c\/p\u003e\n\u003cp\u003eThe H59874701 is suited for boring operations in general machining applications where an uncoated solid carbide insert is preferred, such as when cutting non-ferrous metals, plastics, or other materials where coatings may be detrimental to surface finish or tool life. The C1 material grade and uncoated finish make it a practical choice for shops running fine-bore work that demands sharp cutting edges and dimensional repeatability. Sold individually per package with a minimum order quantity of 10 units.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction, material grade C1, uncoated finish for sharp edge retention\u003c\/li\u003e\n  \u003cli\u003eTPCH insert style with screw-clamp holding method for positive seating in toolholder\u003c\/li\u003e\n  \u003cli\u003e60-degree triangular shape provides three usable cutting edges per insert\u003c\/li\u003e\n  \u003cli\u003e0.007-inch corner radius suitable for finishing and semi-finishing bore work\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch inscribed circle and 3\/32-inch thickness conform to standard TPCH220.5 geometry\u003c\/li\u003e\n  \u003cli\u003e11-degree relief angle reduces flank contact and supports clean cutting action\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit insert for toolholders accepting TPCH-style triangular boring inserts with a 1\/4-inch inscribed circle and screw-clamp retention.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert replacement and indexing should be performed by a qualified machinist with the machine powered down and all rotating components at a full stop. Use the appropriate torque driver for the clamping screw to avoid over-tightening, which can crack the carbide. Inspect the toolholder pocket and clamping screw for wear or debris before seating a new insert. Verify insert orientation and edge selection before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: TPCH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 220.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShape\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\u003eRelief Angle\u003c\/strong\u003e: 11 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.0960 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0070 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: HT540B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4 inches\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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: H59874701\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51739445264690,"sku":"H59874701","price":284.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/74d554ce2337aecff98f62db28f640da.jpg?v=1788814672","url":"https:\/\/voomisupply.com\/products\/hertel-h59874701-boring-insert-tpch220-5-carbide-uncoated","provider":"Voomi Supply","version":"1.0","type":"link"}