{"product_id":"hertel-h59874560-boring-insert-tpcg222-hp520b-carbide","title":"Hertel H59874560 Boring Insert TPCG222 HP520B Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL H59874560 is a solid carbide boring insert in the TPCG style, designed for precision internal turning and boring operations on CNC and manual lathes. The insert carries the HP520B manufacturer grade and features a physical vapor deposition (PVD) TiN coating for improved wear resistance and extended tool life at moderate cutting speeds. Key geometry includes a 60-degree included angle triangular shape, a 1\/32-inch (0.0310-inch) corner radius, and an 11-degree relief angle. The 1\/4-inch inscribed circle and 3\/32-inch thickness place this insert in the standard TPCG222 size class. Installation is performed by a licensed machinist or toolroom technician using a screw-type insert holding method.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for boring and internal finishing applications in metals classified under carbide grade C5, which corresponds to general-purpose steel and cast-iron machining. The left-hand designation indicates it is configured for left-hand cutting tool holders using TPCG-style pockets. Typical use cases include finish boring of housings, cylinders, and bores where close dimensional tolerances and a controlled surface finish are required. Sold individually per package; a minimum order quantity of 10 applies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate with PVD TiN coating for wear resistance in steel and cast-iron cutting\u003c\/li\u003e\n  \u003cli\u003eTPCG222 geometry: 60-degree triangle, 11-degree relief angle, 1\/32-inch corner radius\u003c\/li\u003e\n  \u003cli\u003eScrew-type insert holding method for positive, repeatable seating in compatible toolholders\u003c\/li\u003e\n  \u003cli\u003eLeft-hand cutting configuration\u003c\/li\u003e\n  \u003cli\u003eHP520B grade optimized for moderate-speed finish and semi-finish boring\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch inscribed circle diameter; 3\/32-inch thickness (0.0960 inches decimal)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in left-hand TPCG-style screw-on boring bar toolholders that accept a TPCG222 insert size with a 1\/4-inch inscribed circle. Verify toolholder pocket geometry and relief angle requirements before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert replacement should be performed by a qualified machinist with the machine powered down and locked out per applicable machine-tool safety procedures. Use the correct torque wrench and insert screw specified by the toolholder manufacturer to seat the insert without over-torquing the clamp screw. Inspect the toolholder pocket for chips or wear before seating a new insert. Always confirm the cutting direction matches the left-hand configuration before resuming operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: TPCG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 222\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: HP520B\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: C5\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\u003eCorner Radius\u003c\/strong\u003e: 1\/32 inch (0.0310 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 3\/32 inch (0.0960 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Left Hand\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\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: H59874560\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51740070969650,"sku":"H59874560","price":325.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cfbd108491d60b8fbb510c43129a5948.jpg?v=1788822062","url":"https:\/\/voomisupply.com\/products\/hertel-h59874560-boring-insert-tpcg222-hp520b-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}