{"product_id":"sumitomo-tngg160402l-fx-ac520u","title":"SUMITOMO TNGG160402L-FX AC520U PVD Carbide Insert | TNGG330.5L-FX","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\u003cmeta name=\"description\" content=\"Shop SUMITOMO TNGG160402L-FX AC520U (TNGG330.5L-FX) left-hand PVD carbide inserts. Class G ground edge for superalloy \u0026amp; stainless turning. Fast shipping.\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  *, *::before, *::after { box-sizing: border-box; }\n  body {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #212529;\n    background-color: #f8f9fa;\n    margin: 0;\n    padding: 0;\n    line-height: 1.6;\n    -webkit-user-select: text;\n    user-select: text;\n  }\n  .container {\n    width: 100%;\n    max-width: 960px;\n    margin: 0 auto;\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n  }\n  .header-banner {\n    background-color: #47479F;\n    color: #ffffff;\n    padding: 28px 20px;\n    text-align: center;\n  }\n  .header-banner h1 {\n    color: #ffffff;\n    font-size: 1.8rem;\n    margin: 0 0 8px 0;\n    font-weight: 700;\n  }\n  .header-banner .subtitle {\n    font-size: 1rem;\n    color: #dbe0fe;\n  }\n  .content-padding { padding: 24px 20px; }\n  h2 {\n    color: #47479F;\n    font-size: 1.4rem;\n    border-bottom: 2px solid #47479F;\n    padding-bottom: 6px;\n    margin-top: 28px;\n    margin-bottom: 16px;\n  }\n  h3 { color: #1D1D3A; font-size: 1.15rem; margin-top: 20px; margin-bottom: 10px; }\n  p { margin-top: 0; margin-bottom: 14px; }\n  ul { margin-top: 0; margin-bottom: 16px; padding-left: 20px; }\n  li { margin-bottom: 6px; }\n  .table-responsive {\n    width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin-bottom: 20px;\n  }\n  table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.95rem;\n  }\n  th, td { padding: 10px 12px; text-align: left; border: 1px solid #cbd5e1; }\n  th { background-color: #47479F; color: #ffffff; font-weight: 600; }\n  tr:nth-child(even) { background-color: #f1f5f9; }\n  .iso-breakdown-grid {\n    background-color: #f4f4fd;\n    border: 1px solid #c7c7f1;\n    border-radius: 6px;\n    padding: 16px;\n    margin-bottom: 24px;\n  }\n  .code-display {\n    text-align: center;\n    font-size: 1.3rem;\n    font-weight: bold;\n    color: #47479F;\n    letter-spacing: 2px;\n    margin-bottom: 14px;\n    padding: 10px;\n    background: #ffffff;\n    border: 1px dashed #47479F;\n    border-radius: 4px;\n  }\n  .iso-item { margin-bottom: 8px; font-size: 0.95rem; }\n  .iso-item strong { color: #47479F; display: inline-block; width: 160px; }\n  .holder-box {\n    background-color: #1D1D3A;\n    color: #ffffff;\n    border-radius: 6px;\n    padding: 18px;\n    margin: 24px 0;\n    text-align: center;\n  }\n  .holder-box p { color: #ffffff; margin-bottom: 10px; }\n  .holder-box a {\n    display: inline-block;\n    background-color: #47479F;\n    color: #ffffff;\n    text-decoration: none;\n    font-weight: bold;\n    padding: 10px 20px;\n    border-radius: 4px;\n    border: 1px solid #7272d9;\n  }\n  .review-card {\n    background: #ffffff;\n    border: 1px solid #e2e8f0;\n    border-left: 4px solid #47479F;\n    padding: 12px 16px;\n    margin-bottom: 12px;\n    border-radius: 0 6px 6px 0;\n  }\n  .review-header { font-weight: bold; color: #1D1D3A; }\n  .review-stars { color: #f59e0b; }\n  .review-body { font-size: 0.9rem; color: #475569; margin-top: 4px; margin-bottom: 0; }\n  .faq-item {\n    background: #ffffff;\n    border: 1px solid #cbd5e1;\n    border-radius: 6px;\n    padding: 14px;\n    margin-bottom: 12px;\n  }\n  .faq-q { font-weight: bold; color: #47479F; margin-bottom: 6px; }\n  .faq-a { color: #334155; font-size: 0.95rem; margin: 0; }\n  .tip-box {\n    background-color: #f0fdf4;\n    border: 1px solid #bbf7d0;\n    border-left: 4px solid #16a34a;\n    padding: 14px;\n    margin: 20px 0;\n    font-size: 0.95rem;\n    border-radius: 0 4px 4px 0;\n  }\n  .tip-title { font-weight: bold; color: #15803d; margin-bottom: 4px; }\n  .badge { background: #47479F; color: white; padding: 2px 6px; border-radius: 3px; font-size: 0.8rem; }\n  \n  @media (max-width: 600px) {\n    .header-banner h1 { font-size: 1.4rem; }\n    .iso-item strong { display: block; width: 100%; margin-bottom: 2px; }\n    .code-display { font-size: 1.05rem; letter-spacing: 1px; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"header-banner\"\u003e\n\u003ch1\u003eSUMITOMO TNGG160402L-FX AC520U PVD Turning Insert\u003c\/h1\u003e\n\u003cdiv class=\"subtitle\"\u003eISO: TNGG160402L-FX | ANSI: TNGG330.5L-FX | Class G Ground Left-Hand Precision Insert for High-Speed Super-Finishing Stainless \u0026amp; Exotic Alloys\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"content-padding\"\u003e\n\u003c!-- 1. Product Overview --\u003e\n\u003ch2\u003e1. Product Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eWhich left-hand precision turning insert is best suited for high-speed ultra-fine super-finishing cuts on austenitic stainless steel and nickel-base superalloys on back-spindle CNC Swiss lathes?\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSUMITOMO TNGG160402L-FX AC520U\u003c\/strong\u003e (ANSI designation: \u003cstrong\u003eTNGG330.5L-FX AC520U\u003c\/strong\u003e) is a high-precision Class G perimeter-ground, double-sided 60° negative triangular left-hand turning insert built for extreme surface integrity. Powered by SUMITOMO's \u003cstrong\u003eAC520U Super PVD Coating Grade\u003c\/strong\u003e—featuring a smooth, heat-resistant TiAlN multi-layer PVD coating over an ultra-hard micro-grain carbide substrate—this insert delivers outstanding thermal resistance, notch wear suppression, and high-speed edge wear resistance across ISO M05–M25, S05–S20, and P05–P25 material ranges.\u003c\/p\u003e\n\u003cp\u003eFeaturing a micro 0.2 mm (0.008\") corner radius, Left-Hand (L) cutting orientation, and the ultra-positive \u003cstrong\u003eFX Super-Finishing Chipbreaker\u003c\/strong\u003e, this insert guarantees active chip curl and break under extremely low depth-of-cut conditions (ap: 0.05–0.8 mm) and fine feed rates (f: 0.02–0.10 mm\/rev). It eliminates workpiece deflection on delicate parts and prevents heat buildup, delivering flawless, mirror-like surface finishes (Ra \u0026lt; 0.2–0.4 µm) in high-throughput CNC environments.\u003c\/p\u003e\n\u003c!-- ISO \/ ANSI Designation Breakdown Box --\u003e\n\u003ch3\u003eISO \/ ANSI Designation Breakdown\u003c\/h3\u003e\n\u003cdiv class=\"iso-breakdown-grid\"\u003e\n\u003cdiv class=\"code-display\"\u003eTNGG 160402 L - FX [ Grade: AC520U ]\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eT (Shape):\u003c\/strong\u003e Triangular 60° Indexable Insert (6 double-sided cutting edges)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eN (Clearance):\u003c\/strong\u003e 0° Normal Clearance Angle (Negative basic shape maximizing corner rigidity)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eG (Tolerances):\u003c\/strong\u003e Precision Ground Outer Perimeter Tolerance (Class G: High IC and thickness accuracy)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eG (Feature):\u003c\/strong\u003e Double-sided with center mounting hole and chipbreakers on top and bottom faces\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003e16 (Size \/ IC):\u003c\/strong\u003e Edge length 16.5 mm \/ Inscribed Circle = 9.525 mm (3\/8\")\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003e04 (Thickness):\u003c\/strong\u003e Thickness s = 4.76 mm (3\/16\")\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003e02 (Corner Radius):\u003c\/strong\u003e Precision Corner Radius r = 0.2 mm (0.008\" micro finish radius)\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eL (Hand Direction):\u003c\/strong\u003e Left-hand cutting direction orientation\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eFX (Chipbreaker):\u003c\/strong\u003e Ultra-fine FX super-finishing chipbreaker with sharp cutting edge for low cutting resistance\u003c\/div\u003e\n\u003cdiv class=\"iso-item\"\u003e\n\u003cstrong\u003eAC520U (Grade):\u003c\/strong\u003e High-Speed Super PVD Coated Micro-Grain Carbide Substrate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 2. Key Features --\u003e\n\u003ch2\u003e2. Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed AC520U PVD Coating:\u003c\/strong\u003e Hard substrate coupled with heat-resistant TiAlN PVD layer enables higher cutting speeds (Vc) on Inconel, Titanium, and Stainless Steels without edge softening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass G Precision Ground Edge:\u003c\/strong\u003e Delivers tight indexing repeatability (±0.025 mm IC tolerance), ensuring identical offset values across part changes on gang-tool Swiss lathes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeft-Hand Cutting Orientation:\u003c\/strong\u003e Engineered specifically for sub-spindle turning, left-hand gang tool positions, and back-turning machining operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFX Super-Finishing Geometry:\u003c\/strong\u003e High-rake sharp rake face cleanly shears stringy material, preventing bird-nesting chips and part scratching at low depth-of-cut settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 Usable Cutting Edges:\u003c\/strong\u003e Double-sided negative profile provides 6 cutting edges per insert, reducing tooling costs compared to single-sided positive inserts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- 3. Specifications \u0026 Dual-Unit Comparison --\u003e\n\u003ch2\u003e3. Specifications \u0026amp; Dual-Unit Comparison\u003c\/h2\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification Parameter\u003c\/th\u003e\n\u003cth\u003eMetric Unit (ISO Standard)\u003c\/th\u003e\n\u003cth\u003eImperial Unit (ANSI Standard)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsert Designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTNGG160402L-FX\u003c\/td\u003e\n\u003ctd\u003eTNGG330.5L-FX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInscribed Circle (IC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9.525 mm\u003c\/td\u003e\n\u003ctd\u003e0.375\" (3\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness (S)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.76 mm\u003c\/td\u003e\n\u003ctd\u003e0.1875\" (3\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCorner Radius (RE)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 mm\u003c\/td\u003e\n\u003ctd\u003e0.0078\" (0.008\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHole Diameter (D1)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.81 mm\u003c\/td\u003e\n\u003ctd\u003e0.150\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuper PVD Hard Carbide (AC520U)\u003c\/td\u003e\n\u003ctd\u003eSuper PVD Hard Carbide (AC520U)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRecommended Cutting Parameters\u003c\/h3\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eWorkpiece Material\u003c\/th\u003e\n\u003cth\u003eCutting Speed (Vc)\u003c\/th\u003e\n\u003cth\u003eFeed Rate (f)\u003c\/th\u003e\n\u003cth\u003eDepth of Cut (ap)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStainless Steel (304, 316, 316L, 17-4PH)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 - 280 m\/min\u003cbr\u003e\u003cem\u003e(490 - 920 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.02 - 0.10 mm\/rev\u003cbr\u003e\u003cem\u003e(0.0008 - 0.004 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.05 - 0.8 mm\u003cbr\u003e\u003cem\u003e(0.002 - 0.031 in)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeat Resistant Alloys (Inconel 718, Waspaloy)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 - 110 m\/min\u003cbr\u003e\u003cem\u003e(165 - 360 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.02 - 0.08 mm\/rev\u003cbr\u003e\u003cem\u003e(0.0008 - 0.003 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.05 - 0.6 mm\u003cbr\u003e\u003cem\u003e(0.002 - 0.024 in)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTitanium Alloys (Ti-6Al-4V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 - 130 m\/min\u003cbr\u003e\u003cem\u003e(195 - 425 SFM)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.02 - 0.10 mm\/rev\u003cbr\u003e\u003cem\u003e(0.0008 - 0.004 ipr)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.05 - 0.8 mm\u003cbr\u003e\u003cem\u003e(0.002 - 0.031 in)\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Compatible Toolholder Link Box --\u003e\n\u003cdiv class=\"holder-box\"\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Compatible Toolholders (ISO Top \u0026amp; Pin Clamp Left-Hand Turning Holders):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompatible with standard toolholders: \u003ccode\u003eMTJNL 2020K16\u003c\/code\u003e, \u003ccode\u003eMTJNL 2525M16\u003c\/code\u003e, \u003ccode\u003eWTJNL 2020K16\u003c\/code\u003e, \u003ccode\u003ePTGNL 2020K16\u003c\/code\u003e\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tn-insert-multi-lock-system\" target=\"_blank\" rel=\"noopener\"\u003eView Compatible MTJNL2020K16 Left-Hand Turning Toolholders →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c!-- Workpiece Material Matrix --\u003e\n\u003ch3\u003eWorkpiece Material Matrix (ISO 513 Standard)\u003c\/h3\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eISO Material Group\u003c\/th\u003e\n\u003cth\u003eSuitability\u003c\/th\u003e\n\u003cth\u003eCommon Grade Examples\u003c\/th\u003e\n\u003cth\u003ePerformance Rating\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS (Exotic \/ Superalloys)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"badge\"\u003ePrimary Choice\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eInconel 718, Hastelloy, Titanium Alloys\u003c\/td\u003e\n\u003ctd\u003e★★★★★ (Optimal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eM (Stainless Steel)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimary Choice\u003c\/td\u003e\n\u003ctd\u003eAustenitic (304, 316), Martensitic (420), PH Stainless\u003c\/td\u003e\n\u003ctd\u003e★★★★★ (Optimal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eP (Steel Finishing)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSecondary Choice\u003c\/td\u003e\n\u003ctd\u003eCarbon Steels (1045), Alloy Steels (4140, 8620)\u003c\/td\u003e\n\u003ctd\u003e★★★★☆ (Very Good)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eK (Cast Iron)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConditional\u003c\/td\u003e\n\u003ctd\u003eNodular Iron, Gray Cast Iron (Light finishing)\u003c\/td\u003e\n\u003ctd\u003e★★☆☆☆ (Limited)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- 4. Applications --\u003e\n\u003ch2\u003e4. Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwiss Sub-Spindle Back Turning:\u003c\/strong\u003e High-precision finish turning on the secondary spindle of Swiss automatic lathes for medical fittings and micro valves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace Fastener Thread Reliefing:\u003c\/strong\u003e High-speed finish grooving and shoulder turning on Titanium alloy bolts using left-hand tool setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Automotive Valve Stems:\u003c\/strong\u003e Ultra-fine profile turning on stainless steel fuel injector components demanding Ra \u0026lt; 0.2 µm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- 5. Compatibility --\u003e\n\u003ch2\u003e5. Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis insert fits all standard ISO left-hand external turning toolholders featuring top-and-pin clamp clamping systems (MTJNL, PTGNL, WTJNL). Fully compatible with automatic sliding-head CNC Swiss lathes and turning centers from Citizen, Tsugami, Star, Haas, Mazak, Okuma, and Doosan\/DN Solutions.\u003c\/p\u003e\n\u003c!-- 6. Grade Comparison \u0026 Equivalent Models --\u003e\n\u003ch2\u003e6. Grade Comparison \u0026amp; Equivalent Models\u003c\/h2\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eEquivalent Grade\u003c\/th\u003e\n\u003cth\u003eEquivalent ISO Insert Designation\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSUMITOMO (Original)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAC520U (Higher Speed) \/ AC530U\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTNGG160402L-FX\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKyocera\u003c\/td\u003e\n\u003ctd\u003ePR1310 \/ PR1125\u003c\/td\u003e\n\u003ctd\u003eTNGG160402L-S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTungaloy\u003c\/td\u003e\n\u003ctd\u003eSH730 \/ AH725\u003c\/td\u003e\n\u003ctd\u003eTNGG160402L-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSandvik Coromant\u003c\/td\u003e\n\u003ctd\u003e1115 \/ GC1105\u003c\/td\u003e\n\u003ctd\u003eTNGG160402-SFL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIscar\u003c\/td\u003e\n\u003ctd\u003eIC907 \/ IC807\u003c\/td\u003e\n\u003ctd\u003eTNGG 160402L-F2M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- 7. Why Choose Us --\u003e\n\u003ch2\u003e7. Why Choose Us\u003c\/h2\u003e\n\u003cp\u003eWe supply 100% genuine SUMITOMO Electric Hardmetal indexable inserts directly through certified factory supply routes. Quality batch testing guarantees uniform edge geometry, reliable PVD adhesion, and exact offset precision for continuous automated CNC production.\u003c\/p\u003e\n\u003ch3\u003eVerified Customer Reviews\u003c\/h3\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eBrian Vance (USA - Apex Swiss CNC Manufacturing) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eFinding high-quality left-hand precision ground inserts for our back-spindle sub-operations used to be a challenge. The TNGG160402L-FX AC520U holds ±0.0002\" all day long on 316L medical pins.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eMatthias Bauer (Germany - Bauer Feinmechanik GmbH) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eHervorragende Linksausführung für Drehmaschinen. Die FX-Geometrie bricht die Späne selbst bei minimaler Schnitttiefe tadellos.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eGiuseppe Moretti (Italy - Torino Precision Turning) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eInserti di qualità eccezionale. Il grado AC520U garantisce una durata del tagliente superiore nelle lavorazioni ad alta velocità su lega di titanio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eSatoshi Sato (Japan - Nagano Precision Parts) \u003cspan class=\"review-stars\"\u003e★★★★★\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eサブ主軸での背後加工に最適です。AC520Uの耐摩耗性が高く、仕上げ面の粗さが非常に安定しています。\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"review-card\"\u003e\n\u003cdiv class=\"review-header\"\u003eCraig Jenkins (UK - Aero Turn Tech Ltd) \u003cspan class=\"review-stars\"\u003e★★★★☆\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"review-body\"\u003eUsing these left-hand inserts on our Citizen gang slide for Inconel component finishing. Edge sharpness is top-tier and chip control is consistent.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 8. AI-Style FAQ \u0026 Troubleshooting Guide --\u003e\n\u003ch2\u003e8. AI-Style FAQ \u0026amp; Troubleshooting\u003c\/h2\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: When should I choose the TNGG160402L-FX (Left-Hand) over the TNGG160402R-FX (Right-Hand) insert?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: Use the left-hand (L) version when mounting into left-hand holders (MTJNL\/PTGNL) required for sub-spindle machining on CNC Swiss machines, back-turning operations, or specific gang-plate tooling configurations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: How does the AC520U PVD grade outperform standard CVD coated carbide in high-speed finishing?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: AC520U features an ultra-smooth, thin PVD TiAlN coating that preserves edge sharpness while providing high thermal barrier properties. Unlike thicker CVD coatings, it prevents edge rounding, minimizing cutting resistance on micro-finishing cuts.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eQ: What cut depth range is optimal for the FX chipbreaker?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eA: The FX chipbreaker is specifically engineered for ultra-fine super-finishing cuts ranging from ap = 0.05 mm up to 0.8 mm (0.002\" to 0.031\") with feed rates between f = 0.02 and 0.10 mm\/rev.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTroubleshooting Quick Reference\u003c\/h3\u003e\n\u003cdiv class=\"table-responsive\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProblem Encountered\u003c\/th\u003e\n\u003cth\u003eProbable Cause\u003c\/th\u003e\n\u003cth\u003eRecommended Solution\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLong Ribbon Chips Wrapping Workpiece\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDepth of cut ap or feed rate f is lower than the active FX chipbreaking envelope\u003c\/td\u003e\n\u003ctd\u003eSlightly increase feed rate f toward 0.05-0.08 mm\/rev or verify the depth of cut is above 0.05 mm.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorkpiece Surface Roughness (Ra) Deterioration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMicro-chipping on edge or spindle axis height misalignment\u003c\/td\u003e\n\u003ctd\u003eVerify tool center height is aligned within ±0.03 mm of center line and inspect edge under magnification.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRapid Flank Wear at High Speeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInsufficient coolant delivery causing thermal degradation\u003c\/td\u003e\n\u003ctd\u003eEnsure high-pressure coolant is directed straight to the cutting edge\/rake interface to maximize AC520U PVD coating performance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Grade Comparison \u0026 Authority Tip --\u003e\n\u003cdiv class=\"tip-box\"\u003e\n\u003cdiv class=\"tip-title\"\u003eGrade Comparison Tip \u0026amp; Certified Standards Reference\u003c\/div\u003e\n\u003cp\u003eUnder ISO 513:2012 classification standards, SUMITOMO AC520U super PVD coated carbide grade delivers continuous heat resistance up to 1000°C, making it the benchmark grade choice for high-speed finishing across ISO M05–M25 stainless steels and ISO S05–S20 superalloys.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sumitomo","offers":[{"title":"Default Title","offer_id":43396378722476,"sku":"TNGG160402L-FX AC520U","price":129.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/SUMITOMO_TNGG160402L-FX_AC520U_Left_Hand_PVD_Coated_Carbide_Turning_Insert.jpg?v=1787471436","url":"https:\/\/cnchome-beyond.com\/products\/sumitomo-tngg160402l-fx-ac520u","provider":"CNCHome-Beyond","version":"1.0","type":"link"}