{"product_id":"sumitomo-tnmg160408n-gu-t1500a-cermet-turning-insert","title":"SUMITOMO TNMG160408N-GU T1500A Uncoated Cermet Turning Insert (TNMG 332-GU)","description":"\u003cstyle\u003e\n  :root {\n    --brand-color: #47479F;\n    --brand-dark: #323270;\n    --text-main: #222222;\n    --text-muted: #555555;\n    --bg-light: #f8f9fa;\n    --bg-white: #ffffff;\n    --border-color: #e0e0e0;\n  }\n\n  .cnc-pdp-container {\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 16px;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: var(--text-main);\n    line-height: 1.6;\n    -webkit-user-select: text;\n    user-select: text;\n  }\n\n  .cnc-pdp-container *, .cnc-pdp-container *::before, .cnc-pdp-container *::after {\n    box-sizing: border-box;\n  }\n\n  \/* Typography *\/\n  .cnc-h1 {\n    background-color: var(--brand-color);\n    color: #ffffff !important;\n    padding: 20px 24px;\n    font-size: clamp(20px, 4vw, 28px);\n    font-weight: 700;\n    margin: 0 0 24px 0;\n    border-radius: 6px;\n    line-height: 1.3;\n  }\n\n  .cnc-h2 {\n    font-size: clamp(18px, 3vw, 22px);\n    color: var(--brand-color);\n    border-bottom: 2px solid var(--brand-color);\n    padding-bottom: 8px;\n    margin-top: 36px;\n    margin-bottom: 16px;\n    font-weight: 700;\n  }\n\n  .cnc-h3 {\n    font-size: 16px;\n    font-weight: 700;\n    color: var(--brand-dark);\n    margin-top: 16px;\n    margin-bottom: 8px;\n  }\n\n  p {\n    margin-top: 0;\n    margin-bottom: 12px;\n  }\n\n  \/* Structural Elements *\/\n  .cnc-card {\n    border: 1px solid var(--border-color);\n    border-radius: 6px;\n    padding: 20px;\n    margin-bottom: 20px;\n    background-color: var(--bg-white);\n  }\n\n  .cnc-card-dark {\n    background-color: var(--brand-color);\n    color: #ffffff !important;\n    border-radius: 6px;\n    padding: 20px;\n    margin-bottom: 20px;\n  }\n\n  .cnc-card-dark p, .cnc-card-dark h3, .cnc-card-dark span, .cnc-card-dark div {\n    color: #ffffff !important;\n  }\n\n  .cnc-grid-2 {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n    gap: 16px;\n  }\n\n  .cnc-grid-3 {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));\n    gap: 16px;\n  }\n\n  \/* Tables *\/\n  .cnc-table-wrapper {\n    width: 100%;\n    overflow-x: auto;\n    margin-bottom: 20px;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .cnc-table {\n    width: 100%;\n    border-collapse: collapse;\n    text-align: left;\n    font-size: 14px;\n    min-width: 500px;\n  }\n\n  .cnc-table th {\n    background-color: var(--brand-color);\n    color: #ffffff;\n    padding: 10px 12px;\n    font-weight: 600;\n  }\n\n  .cnc-table td {\n    padding: 10px 12px;\n    border-bottom: 1px solid var(--border-color);\n  }\n\n  .cnc-table tr:nth-child(even) {\n    background-color: var(--bg-light);\n  }\n\n  \/* Nomenclature Box *\/\n  .iso-breakdown {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 8px;\n    margin: 16px 0;\n  }\n\n  .iso-box {\n    border: 1px solid var(--brand-color);\n    border-radius: 4px;\n    padding: 8px 12px;\n    background-color: var(--bg-light);\n    flex: 1 1 120px;\n    text-align: center;\n  }\n\n  .iso-box .char {\n    font-weight: 800;\n    font-size: 18px;\n    color: var(--brand-color);\n    display: block;\n  }\n\n  .iso-box .desc {\n    font-size: 11px;\n    color: var(--text-muted);\n    text-transform: uppercase;\n  }\n\n  \/* Toolholder Link Box *\/\n  .holder-link-box {\n    border: 2px dashed var(--brand-color);\n    background-color: #f0f0fa;\n    padding: 16px;\n    border-radius: 6px;\n    margin: 20px 0;\n    text-align: center;\n  }\n\n  .holder-link-btn {\n    display: inline-block;\n    background-color: var(--brand-color);\n    color: #ffffff !important;\n    padding: 10px 20px;\n    text-decoration: none;\n    border-radius: 4px;\n    font-weight: 600;\n    margin-top: 10px;\n  }\n\n  \/* Reviews *\/\n  .review-stars {\n    color: #ffb400;\n    font-size: 14px;\n  }\n\n  .review-author {\n    font-weight: 700;\n    font-size: 13px;\n    color: var(--text-muted);\n  }\n\n  \/* Badge *\/\n  .badge-keyword {\n    display: inline-block;\n    background: #eef0f8;\n    color: var(--brand-dark);\n    padding: 4px 8px;\n    border-radius: 4px;\n    font-size: 12px;\n    margin: 2px;\n    font-weight: 500;\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"cnc-pdp-container\"\u003e\n\u003c!-- H1 Title --\u003e\n\u003ch1 class=\"cnc-h1\"\u003eSUMITOMO TNMG160408N-GU T1500A Uncoated Cermet Turning Insert (ANSI: TNMG 332-GU)\u003c\/h1\u003e\n\u003c!-- Section 1: Product Overview --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhich cermet turning insert is best for continuous precision finishing, ultra-sharp edge sharpness, and mirror surface quality on steel components?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSUMITOMO TNMG160408N-GU T1500A\u003c\/strong\u003e (ANSI designation \u003cstrong\u003eTNMG 332-GU\u003c\/strong\u003e) is an industrial-grade uncoated cermet turning insert specifically engineered for high-speed precision finish turning of carbon steels, alloy steels, and bearing steels (ISO P01-P15). Built upon SUMITOMO's advanced \u003cstrong\u003eT1500A micro-grain titanium-based cermet matrix\u003c\/strong\u003e, this insert relies on extreme chemical stability and ultra-sharp edge hone retention to eliminate built-up edge (BUE) formation, achieving near-mirror surface finishes (Ra \u0026lt; 0.4 µm) without requiring grinding or polishing passes.\u003c\/p\u003e\n\u003cp\u003eEquipped with the universal \u003cstrong\u003eGU Medium-Light Finishing Chipbreaker\u003c\/strong\u003e, this insert features a multi-stage 3D rake angle profile that manages light cutting loads and thin chip formation across depths of cut from 0.5mm to 3.0mm. It delivers clean, predictable chip control and ultra-stable dimensional tolerances across automated, long-run CNC production setups.\u003c\/p\u003e\n\u003cdiv style=\"margin-top: 12px;\"\u003e\n\u003cspan class=\"badge-keyword\"\u003eTNMG160408N-GU\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eTNMG 332-GU\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eSUMITOMO T1500A\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eUncoated Cermet Insert\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eMirror Steel Finishing\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eGU Universal Chipbreaker\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 2: Key Features --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e2. Key Features\u003c\/h2\u003e\n\u003cdiv class=\"cnc-grid-2\"\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eMicro-Grain T1500A Uncoated Cermet\u003c\/div\u003e\n\u003cp\u003eFormulated with high-density TiCN\/TiN micro-grains that provide ultra-sharp edge hone integrity, minimal thermal expansion, and superb plastic deformation resistance during continuous, high-speed finish cuts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eGU Low-Resistance Chipbreaker Geometry\u003c\/div\u003e\n\u003cp\u003eEngineered with a smooth 3D rake wall that curls and breaks stringy finishing chips cleanly across a flexible range of depths of cut (ap: 0.5mm - 3.0mm) without chatter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003e6 Usable Precision Cutting Edges\u003c\/div\u003e\n\u003cp\u003eThe 60° triangle double-sided negative design offers maximum economic value with 6 true cutting edges per insert, lowering overall cost-per-part on high-volume CNC lathes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eZero Chemical Affinity to Steel\u003c\/div\u003e\n\u003cp\u003eBecause cermet does not react chemically with iron\/steel micro-particles at high temperatures, it completely eliminates edge welding (BUE), maintaining pristine workpiece surfaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 3: Technical Specifications \u0026 Nomenclature --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e3. Specifications \u0026amp; ISO\/ANSI Breakdown\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eISO \/ ANSI Nomenclature Breakdown\u003c\/div\u003e\n\u003cp\u003eUnderstanding the standard code for order accuracy:\u003c\/p\u003e\n\u003cdiv class=\"iso-breakdown\"\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eT\u003c\/span\u003e\u003cspan class=\"desc\"\u003eShape (60° Triangle)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eN\u003c\/span\u003e\u003cspan class=\"desc\"\u003eClearance (0° Negative)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eM\u003c\/span\u003e\u003cspan class=\"desc\"\u003eTolerance Class\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eG\u003c\/span\u003e\u003cspan class=\"desc\"\u003eFixing \/ Hole Type\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003e16 \/ 3\u003c\/span\u003e\u003cspan class=\"desc\"\u003eEdge Length (16.5mm \/ 3\/8\")\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003e04 \/ 3\u003c\/span\u003e\u003cspan class=\"desc\"\u003eThickness (4.76mm \/ 3\/16\")\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003e08 \/ 2\u003c\/span\u003e\u003cspan class=\"desc\"\u003eCorner Radius (0.8mm \/ 1\/32\")\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eN-GU\u003c\/span\u003e\u003cspan class=\"desc\"\u003eGU Finishing\/General Breaker\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eT1500A\u003c\/span\u003e\u003cspan class=\"desc\"\u003eUncoated Cermet Grade\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eDimensional Standard Comparison (Metric vs. Imperial)\u003c\/div\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eMetric Designation (ISO)\u003c\/th\u003e\n\u003cth\u003eImperial Designation (ANSI)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsert Model Code\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTNMG160408N-GU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTNMG 332-GU\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInscribed Circle (IC)\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\u003eThickness (S)\u003c\/td\u003e\n\u003ctd\u003e4.76 mm\u003c\/td\u003e\n\u003ctd\u003e0.187\" (3\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorner Radius (r)\u003c\/td\u003e\n\u003ctd\u003e0.8 mm\u003c\/td\u003e\n\u003ctd\u003e0.031\" (1\/32\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Diameter (d1)\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\u003eCutting Edge Length (L)\u003c\/td\u003e\n\u003ctd\u003e16.5 mm\u003c\/td\u003e\n\u003ctd\u003e0.650\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eRecommended Cutting Parameters\u003c\/div\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\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\u003eCarbon Steel \/ Alloy Steel (1045, 4140, 8620)\u003c\/td\u003e\n\u003ctd\u003e180 - 360 m\/min (590 - 1180 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.10 - 0.30 mm\/rev (.004 - .012 IPR)\u003c\/td\u003e\n\u003ctd\u003e0.5 - 2.5 mm (.020 - .098 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearing Steel \/ Free-Cutting Steel (SUJ2, 12L14)\u003c\/td\u003e\n\u003ctd\u003e200 - 400 m\/min (650 - 1310 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.28 mm\/rev (.003 - .011 IPR)\u003c\/td\u003e\n\u003ctd\u003e0.4 - 2.0 mm (.016 - .078 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGray Cast Iron \/ Ductile Iron (GG25, GGG40)\u003c\/td\u003e\n\u003ctd\u003e140 - 280 m\/min (460 - 920 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.10 - 0.25 mm\/rev (.004 - .010 IPR)\u003c\/td\u003e\n\u003ctd\u003e0.5 - 2.0 mm (.020 - .078 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Toolholder Link Box --\u003e\n\u003cdiv class=\"holder-link-box\"\u003e\n\u003cdiv style=\"font-weight: bold; font-size: 16px; color: var(--brand-dark);\"\u003eCompatible Toolholder Requirements\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 14px;\"\u003eFits all standard ISO\/ANSI \u003cstrong\u003eMTJNR\/L\u003c\/strong\u003e, \u003cstrong\u003eMTGNR\/L\u003c\/strong\u003e, or \u003cstrong\u003eWTJNR\/L\u003c\/strong\u003e external turning toolholders and \u003cstrong\u003eMTFNR\/L\u003c\/strong\u003e boring bars taking 1604 \/ 332 size negative inserts with top and hole clamping.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tn-insert-multi-lock-system\" target=\"_blank\" rel=\"noopener\"\u003eBrowse Compatible Toolholders (MTJNR\/L) →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c!-- Section 4: Applications --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e4. Target Applications\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Mirror Finishing:\u003c\/strong\u003e High-precision finish turning of automotive input shafts, hydraulic spools, precision pins, and bearing journals requiring Ra \u0026lt; 0.4 µm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Continuous Turning:\u003c\/strong\u003e Optimized for high-speed CNC lathes and Swiss-type automatic turning centers cutting clean carbon steel and alloy steel components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry Turning Operations:\u003c\/strong\u003e High thermal oxidation resistance allows clean dry turning, eliminating coolant mist and cutting fluids on precision components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Section 5: Tool \u0026 Equipment Compatibility --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e5. Compatibility\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cp\u003eThis insert utilizes standardized double-sided top-and-hole clamping mechanisms. It is fully compatible with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine Types:\u003c\/strong\u003e High-Speed CNC Lathes, Swiss Automatic Lathes, Precision Turning Centers, and Engine Lathes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Toolholders:\u003c\/strong\u003e MTJNR2020K16, MTJNR2525M16, MTGNR2525M16, WTJNR2525M16, and internal boring bars like S32T-MTJNR16.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamping Systems:\u003c\/strong\u003e Top clamp, pin-lock, and combination clamping mechanisms (ISO 5608).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Section 6: Grade Comparison --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e6. Material \u0026amp; Grade Comparison\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSUMITOMO Grade\u003c\/th\u003e\n\u003cth\u003eMaterial Class\u003c\/th\u003e\n\u003cth\u003ePrimary Application Field\u003c\/th\u003e\n\u003cth\u003eKey Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eT1500A (Current)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUncoated Cermet\u003c\/td\u003e\n\u003ctd\u003eISO P01-P15 \/ Steel High-Precision Finish\u003c\/td\u003e\n\u003ctd\u003eUltra-sharp edge retention; superior mirror finish and strict dimensional precision.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eT1500Z\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePVD Coated Cermet\u003c\/td\u003e\n\u003ctd\u003eISO P10-P20 \/ Steel High-Speed Finishing\u003c\/td\u003e\n\u003ctd\u003eBrilliant Coat PVD; extended tool life under high speeds and light interrupted cuts.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC8025P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCVD Coated Carbide\u003c\/td\u003e\n\u003ctd\u003eISO P15-P35 \/ General Steel Roughing\u003c\/td\u003e\n\u003ctd\u003eHigh toughness carbide for heavy cuts and medium interrupted operations.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 7: Why Choose Us \u0026 Customer Reviews --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e7. Why Choose Us\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card-dark\"\u003e\n\u003ch3\u003eDirect Industrial Tooling Supply\u003c\/h3\u003e\n\u003cp\u003eWe source 100% genuine SUMITOMO Electric Hardmetal cutting tools directly through authorized global supply channels. Every box features original anti-counterfeiting tracking codes. Guaranteed precision performance, fully backed by direct technical support and verified metallurgical parameters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-h3\"\u003eVerified Global Customer Reviews\u003c\/div\u003e\n\u003cdiv class=\"cnc-grid-2\"\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"T1500A uncoated cermet produced an incredible mirror finish on our 8620 steel shafts. Dimensional stability over 400 parts was within 0.003mm.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Mark S., Production Shop Lead (Illinois, USA)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"Exzellente Oberflächengüte bei C45. Die Schneidkante bleibt messerscharf und neigt nicht zu Aufbauschneiden.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Christian W., CNC Fertigungsleiter (Bavaria, Germany)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★☆\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"Ottimo inserto cermet non rivestito per finitura ad alta velocità. Finitura superficiale perfetta su acciaio legato.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Matteo B., Lathe Supervisor (Brescia, Italy)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"Original SUMITOMO quality. Uncoated T1500A provides remarkably sharp edges for light finish turning of precision pins.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Kenji O., Quality Engineer (Nagoya, Japan)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"The GU chipbreaker on T1500A handled our light finishing cuts without a single tangled chip. Exceptional tooling value.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Arthur P., Machine Shop Owner (Yorkshire, UK)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 8: AI \/ AEO Style FAQ --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e8. Frequently Asked Questions (AI Search \u0026amp; AEO Optimized)\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eQ: When should I select uncoated cermet T1500A instead of PVD-coated cermet T1500Z?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Uncoated cermet T1500A features an extremely sharp micro-edge hone without coating radius buildup, making it the premier choice for light continuous finishing cuts requiring ultra-smooth surface finishes (Ra \u0026lt; 0.4 µm) and minimal cutting resistance. PVD-coated T1500Z is preferred when additional wear resistance or light interrupted cutting toughness is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eQ: Can TNMG160408N-GU T1500A handle interrupted turning?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Uncoated cermet materials are brittle compared to tungsten carbide and are optimized for continuous turning. For interrupted cuts or heavy shock loading, switch to a coated carbide grade such as SUMITOMO AC8025P.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eQ: What feed rates and depths of cut work best with the GU chipbreaker on T1500A?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The GU breaker operates cleanly at feed rates between 0.10 mm\/rev and 0.30 mm\/rev with depths of cut (ap) ranging from 0.5 mm to 2.5 mm for optimal chip breaking on steel workpieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eQ: Is TNMG 332-GU identical in dimensions to TNMG160408N-GU?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. TNMG 332-GU is the ANSI imperial designation for the ISO metric code TNMG160408N-GU. Both codes describe an insert with a 3\/8\" (9.525mm) inscribed circle, 3\/16\" (4.76mm) thickness, and 1\/32\" (0.8mm) corner radius.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section 9: Technical Footnote \u0026 Troubleshooting Matrix --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e9. Technical Resource \u0026amp; Troubleshooting Guide\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eWorkpiece Material ISO Application Matrix\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eISO P (Primary):\u003c\/strong\u003e Carbon Steel, Alloy Steel, Bearing Steel, Lead Free Steel ★★★★★\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eISO K (Secondary):\u003c\/strong\u003e Gray Cast Iron, Ductile Iron (Light finish passes) ★★★☆☆\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eISO M (Conditional):\u003c\/strong\u003e Ferritic \/ Martensitic Stainless Steels ★★☆☆☆\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eEquivalent International Models Cross-Reference\u003c\/div\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eEquivalent Grade\u003c\/th\u003e\n\u003cth\u003eEquivalent Chipbreaker\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSUMITOMO\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eT1500A (Uncoated Cermet)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eGU\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKyocera\u003c\/td\u003e\n\u003ctd\u003eTN60 \/ TN620\u003c\/td\u003e\n\u003ctd\u003eGP \/ HQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIscar\u003c\/td\u003e\n\u003ctd\u003eIC20N \/ IC30N\u003c\/td\u003e\n\u003ctd\u003eSF \/ SM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTaeguTec\u003c\/td\u003e\n\u003ctd\u003eCT3000\u003c\/td\u003e\n\u003ctd\u003eFG \/ FGX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMitsubishi\u003c\/td\u003e\n\u003ctd\u003eNX2525\u003c\/td\u003e\n\u003ctd\u003eF \/ M Breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eTroubleshooting Machining Issues\u003c\/div\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProblem Identified\u003c\/th\u003e\n\u003cth\u003eProbable Cause\u003c\/th\u003e\n\u003cth\u003eCorrective Action\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdge Micro-Chipping\u003c\/td\u003e\n\u003ctd\u003eMechanical shock from interrupted cut or cutting speed too low.\u003c\/td\u003e\n\u003ctd\u003eIncrease cutting speed (Vc) to reach cermet plastic range; avoid heavy interrupted cuts or switch to carbide grade (AC8025P).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnbroken Ribbon Chips\u003c\/td\u003e\n\u003ctd\u003eDepth of cut (ap) below GU breaker activation threshold (\u0026lt; 0.5mm).\u003c\/td\u003e\n\u003ctd\u003eIncrease depth of cut or feed rate slightly to engage the 3D chipbreaker ridge.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRapid Flank Wear\u003c\/td\u003e\n\u003ctd\u003eCutting speed (Vc) excessively high for workpiece hardness.\u003c\/td\u003e\n\u003ctd\u003eReduce cutting speed (Vc) by 15-20% or switch to PVD-coated T1500Z cermet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChatter \/ Vibration Marks\u003c\/td\u003e\n\u003ctd\u003eOverly heavy depth of cut or loose setup rigidity.\u003c\/td\u003e\n\u003ctd\u003eReduce depth of cut (ap) or increase tool clamping rigidity; check center height alignment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Authoritative Proof \/ Citation Section --\u003e\n\u003cdiv class=\"cnc-card\" style=\"background-color: #f4f5f9; border-left: 4px solid var(--brand-color);\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eAuthoritative Data Verification \u0026amp; ISO Compliance\u003c\/div\u003e\n\u003cp style=\"font-size: 12px; color: var(--text-muted); margin-bottom: 0;\"\u003eAll physical dimensions, geometrical tolerances, and cutting parameters provided above adhere directly to standard \u003cstrong\u003eISO 1832:2017\u003c\/strong\u003e (Indexable inserts for cutting tools — Designation) and \u003cstrong\u003eANSI B212.4-2002\u003c\/strong\u003e specifications. Tool grade micro-hardness and material matrix performance specifications are benchmarked according to official Sumitomo Electric Hardmetal Corp. technical catalog parameters (T1000A\/T1500A Cermet Turning Series).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sumitomo","offers":[{"title":"Default Title","offer_id":43396582080684,"sku":"TNMG160408N-GU T1500A","price":65.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/SUMITOMO_TNMG160408N-GU_T1500A_uncoated_cermet_turning_insert_top_view.jpg?v=1785915050","url":"https:\/\/cnchome-beyond.com\/products\/sumitomo-tnmg160408n-gu-t1500a-cermet-turning-insert","provider":"CNCHome-Beyond","version":"1.0","type":"link"}