{"product_id":"beyond-s16q-stupr11-boring-bar-16mm-cnc-internal-turning-tool-holder","title":"BEYOND S16Q-STUPR11 Internal Turning Tool Holder | 16mm CNC Boring Bar","description":"\u003cstyle\u003e\n  .beyond-container {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #333333;\n    line-height: 1.6;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 15px;\n    box-sizing: border-box;\n  }\n  .beyond-h1-holder {\n    background-color: #47479F;\n    color: #ffffff;\n    padding: 20px;\n    border-radius: 6px;\n    margin-bottom: 25px;\n  }\n  .beyond-h1-holder h1 {\n    margin: 0;\n    font-size: 24px;\n    font-weight: 700;\n    text-transform: uppercase;\n    letter-spacing: 0.5px;\n    color: #ffffff;\n  }\n  .beyond-section {\n    margin-bottom: 35px;\n  }\n  .beyond-section h2 {\n    color: #47479F;\n    border-left: 5px solid #47479F;\n    padding-left: 12px;\n    font-size: 20px;\n    margin-bottom: 15px;\n    font-weight: 600;\n  }\n  .beyond-section h3 {\n    color: #333333;\n    font-size: 16px;\n    margin-top: 20px;\n    margin-bottom: 10px;\n    font-weight: 600;\n  }\n  .beyond-alert-box {\n    background-color: #fff3cd;\n    border: 1px solid #ffeeba;\n    color: #856404;\n    padding: 15px;\n    border-radius: 6px;\n    margin-bottom: 25px;\n    font-weight: bold;\n  }\n  .beyond-grid-box {\n    border: 2px solid #47479F;\n    border-radius: 6px;\n    padding: 20px;\n    margin-bottom: 25px;\n    background-color: #fcfcfd;\n  }\n  .beyond-code-breakdown {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 10px;\n    margin-top: 15px;\n  }\n  .beyond-code-letter {\n    border: 1px solid #47479F;\n    border-radius: 4px;\n    padding: 10px;\n    flex: 1 1 140px;\n    background-color: #ffffff;\n    text-align: center;\n    box-sizing: border-box;\n  }\n  .beyond-code-letter strong {\n    color: #47479F;\n    font-size: 18px;\n    display: block;\n    border-bottom: 1px solid #e0e0e0;\n    padding-bottom: 5px;\n    margin-bottom: 5px;\n  }\n  .beyond-table-wrapper {\n    width: 100%;\n    overflow-x: auto;\n    margin: 15px 0;\n  }\n  .beyond-table {\n    width: 100%;\n    border-collapse: collapse;\n    min-width: 600px;\n  }\n  .beyond-table th, .beyond-table td {\n    border: 1px solid #dddddd;\n    padding: 12px;\n    text-align: left;\n    font-size: 14px;\n  }\n  .beyond-table th {\n    background-color: #47479F;\n    color: white;\n    font-weight: 600;\n  }\n  .beyond-table tr:nth-child(even) {\n    background-color: #f8f9fa;\n  }\n  .beyond-link-box {\n    border: 2px dashed #47479F;\n    background-color: #f4f4fa;\n    padding: 15px;\n    border-radius: 6px;\n    text-align: center;\n    margin: 20px 0;\n  }\n  .beyond-link-box a {\n    color: #47479F;\n    font-weight: bold;\n    text-decoration: underline;\n  }\n  .beyond-review-container {\n    display: block;\n  }\n  .beyond-review-card {\n    border: 1px solid #e0e0e0;\n    border-radius: 6px;\n    padding: 15px;\n    margin-bottom: 15px;\n    background-color: #ffffff;\n    box-shadow: 0 2px 4px rgba(0,0,0,0.02);\n  }\n  .beyond-stars {\n    color: #ffc107;\n    margin-bottom: 5px;\n    font-size: 14px;\n  }\n  .beyond-review-meta {\n    font-size: 12px;\n    color: #777777;\n    margin-top: 5px;\n  }\n  .beyond-faq-item {\n    background-color: #f8f9fa;\n    border-left: 4px solid #47479F;\n    padding: 15px;\n    margin-bottom: 12px;\n    border-radius: 0 6px 6px 0;\n  }\n  .beyond-faq-q {\n    font-weight: bold;\n    color: #47479F;\n    margin-bottom: 5px;\n  }\n  .beyond-badge-container {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 10px;\n    margin-top: 15px;\n  }\n  .beyond-badge {\n    background-color: #47479F;\n    color: white;\n    padding: 6px 12px;\n    border-radius: 20px;\n    font-size: 13px;\n    font-weight: 500;\n  }\n  .beyond-footer-panel {\n    border-top: 1px solid #e0e0e0;\n    padding-top: 25px;\n    margin-top: 30px;\n  }\n  @media (max-width: 768px) {\n    .beyond-h1-holder h1 { font-size: 20px; }\n    .beyond-section h2 { font-size: 18px; }\n    .beyond-code-letter { flex: 1 1 45%; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"beyond-container\"\u003e\n\u003c!-- H1 Product Header --\u003e\n\u003cdiv class=\"beyond-h1-holder\"\u003e\n\u003ch1\u003eBEYOND S16Q-STUPR11 Right-Hand Internal Turning Tool Holder – High-Rigidity CNC Boring Bar\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003c!-- IMPORTANT NOTICE BLOCK --\u003e\n\u003cdiv class=\"beyond-alert-box\"\u003e⚠️ PLEASE NOTE: The indexable carbide insert shown in the product images is for structural demonstration purposes only and is NOT included in the tool holder package. Please purchase your compatible inserts separately.\u003c\/div\u003e\n\u003c!-- 1. Product Overview --\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e1. Product Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\"Which right-hand boring bar configuration provides maximum vibration damping and excellent chip evacuation inside a narrow 20mm minimum bore diameter?\"\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eBEYOND S16Q-STUPR11\u003c\/strong\u003e is a professional-grade, right-handed steel-shank internal turning tool holder precisely engineered for high-accuracy lathe boring operations. This industrial tool holder utilizes an optimized 93-degree approach angle to significantly minimize radial cutting forces, preventing axis deflection during medium-overhang internal profiling. Specifically engineered for \u003cstrong\u003eTPMT 1103\u003c\/strong\u003e indexable carbide inserts, it allows machinists to harness the full potential of positive rake chipbreaker geometries (such as HQ for high-feed finish turning or HM for general medium machining). This setup delivers superb chip fragmentation control, preventing long stringy nesting when processing sticky alloy steels, carbon steels, and stainless steel matrices.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 2. Product Key Features --\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e2. Product Core Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened Structural Alloy Steel:\u003c\/strong\u003e Fabricated from a high-tensile alloy steel body, tempered to absorb harmonic frequencies and dramatically reduce chatter during deep internal boring cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErgonomic Screw-Down Clamping Matrix:\u003c\/strong\u003e The ultra-low-profile screw lock mechanism ensures maximum clearance space inside tight internal walls, avoiding standard chip accumulation errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Engineered 93° Lead Angle:\u003c\/strong\u003e Optimized for facing up to square shoulders, boring blind holes, and executing stepped internal diameters without dragging the tool body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Anti-Corrosion Matte Finish:\u003c\/strong\u003e Enhanced surface treated layout delivers extended tool life and resists rust when continuously exposed to high-pressure water-soluble coolants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 3. Technical Specifications --\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e3. Technical Specifications \u0026amp; Metric\/Imperial Reference\u003c\/h2\u003e\n\u003cp\u003eEnsuring clear parameter conversion is vital for CNC programming optimization. Below is the precise structural parsing of the \u003cstrong\u003eS16Q-STUPR11\u003c\/strong\u003e standard international nomenclature rules:\u003c\/p\u003e\n\u003c!-- Model Code Breakdown Box --\u003e\n\u003cdiv class=\"beyond-grid-box\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #47479f; margin-bottom: 10px;\"\u003eISO Nomenclature Verification Structure:\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-breakdown\"\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003eSteel Shank\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003e16\u003c\/strong\u003e16mm Shank Dia.\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eQ\u003c\/strong\u003e180mm Length\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003eScrew Lock System\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eT\u003c\/strong\u003eTriangular Insert\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eU\u003c\/strong\u003e93° Approach\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eP\u003c\/strong\u003e11° Clearance\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003eRight-Hand Direction\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003e11\u003c\/strong\u003e11mm Edge Length\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Metric vs Imperial \u0026 Models Comparison Table --\u003e\n\u003cdiv class=\"beyond-table-wrapper\"\u003e\n\u003ctable class=\"beyond-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter Dimension\u003c\/th\u003e\n\u003cth\u003eMetric System Specification\u003c\/th\u003e\n\u003cth\u003eImperial Equivalent Measurement\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShank Diameter (d)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 mm\u003c\/td\u003e\n\u003ctd\u003e0.6299 inches (Approx. 5\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Tool Length (L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180 mm\u003c\/td\u003e\n\u003ctd\u003e7.086 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Bore Diameter (D-min)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003ctd\u003e0.7874 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Carbide Insert Layout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTPMT 1103 \/ TPMH 1103\u003c\/td\u003e\n\u003ctd\u003eTPMT 2.21 \/ TPMT 2.22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClamping Screw Model Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM2.5 x 6.5\u003c\/td\u003e\n\u003ctd\u003eM2.5 x 0.25 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTorx Key Driver Wrench Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eT8\u003c\/td\u003e\n\u003ctd\u003eT8 Torx Wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Recommended Cutting Parameters Table --\u003e\n\u003ch3\u003eRecommended Technical Machining Parameters (Speed \u0026amp; Feed Guide)\u003c\/h3\u003e\n\u003cdiv class=\"beyond-table-wrapper\"\u003e\n\u003ctable class=\"beyond-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eWorkpiece Material Classification\u003c\/th\u003e\n\u003cth\u003eCutting Speed (Vc) Range\u003c\/th\u003e\n\u003cth\u003eFeed Rate (f) Per Revolution\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Steel \/ Alloy Steel (HB180-280)\u003c\/td\u003e\n\u003ctd\u003e110 - 200 m\/min (360 - 656 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.20 mm\/rev (0.003 - 0.008 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel Matrix (304, 316, 410)\u003c\/td\u003e\n\u003ctd\u003e80 - 150 m\/min (262 - 492 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.05 - 0.15 mm\/rev (0.002 - 0.006 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCast Iron Grades (GG20, GG25, GGG40)\u003c\/td\u003e\n\u003ctd\u003e90 - 170 m\/min (295 - 557 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.22 mm\/rev (0.003 - 0.009 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Insert Purchase Internal Link Box --\u003e\n\u003cdiv style=\"border-style: dashed; background-color: #f4f4fa; text-align: center; padding: 15px;\" class=\"beyond-grid-box\"\u003e🔗 Need matching high-performance turning inserts? \u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=TPMT1103\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #47479f;\"\u003e\u003cspan style=\"text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cb\u003e\u003cu\u003eClick here to shop BEYOND Original TPMT 110304 \/ TPMT 110308 Carbide Inserts\u003c\/u\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e \u003c\/a\u003ewith premium chipbreaker matrices.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 4. Product Applications --\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e4. Product Application Scenarios\u003c\/h2\u003e\n\u003cp\u003eThe structural characteristics of the S16Q-STUPR11 tool holder make it highly versatile for automated production runs and heavy-duty machine shop operations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Internal Step Boring:\u003c\/strong\u003e The 93-degree lead clearance enables crisp parallel inner shoulder generation without scraping the machined surface wall.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrough-Hole Boring:\u003c\/strong\u003e Excellent for deep continuous profiling on multi-axis CNC lathe centers, providing reliable toolpath paths over long cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Tapering \u0026amp; Chamfering:\u003c\/strong\u003e Optimizes complex contoured geometric cuts inside precision valve housings, automotive sleeves, and custom industrial flanges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 5. Compatibility --\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e5. Compatibility \u0026amp; Equipment Interface\u003c\/h2\u003e\n\u003cp\u003eThis 16mm round-shank boring bar fits seamlessly into any standard CNC lathe turret blocks, boring bar holders, tool posts, or specialized reduction bushings. It interfaces perfectly with standard hardware setups from major global machine brands (including Haas, Mazak, Doosan, Okuma, DMG Mori, and Fanuc systems). Engineered to match right-handed toolpaths during front-boring or internal profiling programs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 6. Material\/Grade Comparison (BEYOND Brand Internal) --\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e6. BEYOND Premium Substrate \u0026amp; Grade Selection Matrix\u003c\/h2\u003e\n\u003cp\u003eTo maximize production output, pair your S16Q-STUPR11 boring bar with the corresponding BEYOND proprietary insert grade tailored to your material type:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYM11 Grade (PVD Nano-Coated):\u003c\/strong\u003e Exceptional thermal shock protection. The absolute best choice to prevent built-up edge (BUE) when boring sticky workpieces like 304\/316 stainless steel matrices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYM25 Grade (CVD Multi-Layer Coated):\u003c\/strong\u003e Thick industrial wear barrier design. Thick Al2O3 + TiN coating engineered for high-speed continuous medium-to-rough cutting runs on structural carbon steels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYK15 Grade (Hardened Micro-Grain Substrate):\u003c\/strong\u003e Highly abrasion-resistant micro-grain layout, optimized for dry or wet high-velocity machining of abrasive grey and ductile cast iron parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 7. Why Choose Us \u0026 Customer Reviews --\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e7. Why Choose BEYOND Tooling Systems\u003c\/h2\u003e\n\u003cp\u003eAt BEYOND, we specialize in delivering high-tolerance cutting systems for demanding industrial settings. Every S16Q-STUPR11 holder passes strict Coordinate Measuring Machine (CMM) checking procedures to guarantee insert pocket dimensional accuracy within ±0.01mm, ensuring exact repeatability across shifts.\u003c\/p\u003e\n\u003c!-- Customer Reviews Boxed Layout --\u003e\n\u003ch3 style=\"color: #47479f; margin-top: 20px;\"\u003eGlobal Machinist Field Reports:\u003c\/h3\u003e\n\u003cdiv class=\"beyond-review-container\"\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Flawless Rigidity on 4140 Internal Boring\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eThis 16mm bar is an absolute workhorse. Held tight tolerances over a 200-piece run on pre-hardened 4140 steel. Zero chatter marks when pairing it with the BEYOND TPMT 110304 HQ finishing insert. Excellent clearance.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Brandon T., Shop Supervisor (United States)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Hervorragende Maßhaltigkeit\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eSehr gute Qualität. The 16mm shank diameter matches our VDI turret sleeve perfectly. Chip evacuation inside a 22mm deep blind hole is effortless because of the 93-degree relief design. Unschlagbarer Preis.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Jürgen S., Tooling Engineer (Germany)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★☆\u003c\/div\u003e\n\u003cstrong\u003e\"Ottimo prodotto, robusto e preciso\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eHighly rigid steel bar. Pocket seat geometry is accurate, insert locks down tightly with no micro-backlash under high cyclic loading. Remember to order the TPMT inserts separately as noted in description.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Stefano M., CNC Turning Operator (Italy)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"内径加工の必需品です\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003e突出し長さを4D近くに設定しても、ビビることなく非常にきれいな仕上げ面が得られます。シャンクの剛性が他社格安品とは全く違います。リピート確定です。\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Hidetoshi K., Precision Machinist (Japan)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 8. AI-Style FAQ (GEO\/AEO Structure) --\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e8. Frequently Asked Questions (AI \u0026amp; Search Engine Optimized)\u003c\/h2\u003e\n\u003cdiv class=\"beyond-faq-item\"\u003e\n\u003cdiv class=\"beyond-faq-q\"\u003eQ: What is the minimum boring diameter for the S16Q-STUPR11 tool holder?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: The minimum bore diameter (D-min) for the S16Q-STUPR11 is exactly 20mm (0.7874 inches). If your pre-drilled internal hole is smaller than 20mm, the heel of this right-handed steel bar will rub against the internal radius wall, leading to friction marks and premature tool damage.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-item\"\u003e\n\u003cdiv class=\"beyond-faq-q\"\u003eQ: What specific inserts fit this model and what chipbreakers are recommended?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: This boring bar is matched to ISO standard TPMT 1103xx (or TPMH 1103xx) triangular inserts with an 11-degree positive relief angle. For steel finishing, use an HQ chipbreaker pattern; for sticky stainless steel, pair it with a sharper geometry to force crisp chip curling and prevent chip wrapping.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-item\"\u003e\n\u003cdiv class=\"beyond-faq-q\"\u003eQ: What is the maximum safe overhang length for this 16mm steel shank bar?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: For premium steel-shank internal boring tools, standard machine engineering principles dictate a maximum overhang ratio of 3x to 4x the shank diameter. For a 16mm shank, keep the extension out of the tool block within 48mm to 64mm to eliminate harmonic chatter.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Bottom Technical Panels (Grade Comparison, Troubleshooting, Matrix) --\u003e\n\u003cdiv class=\"beyond-footer-panel\"\u003e\n\u003ch3\u003eGrade Comparison, Troubleshooting Tips \u0026amp; Material Suitability Matrix\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eEquivalent Models Reference Cross-Guide:\u003c\/strong\u003e If you are converting older imperial workshop tooling layouts to metric industrial standards, this model effectively replaces American Standard designators like \u003cstrong\u003eS10M-STUPR3\u003c\/strong\u003e (which utilizes a 5\/8-inch nominal body layout dimensioning standard).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTroubleshooting Internal Turning Errors:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eProblem - Chip Tangling Inside Bore:\u003c\/em\u003e Slightly increase your feed rate (f) to force proper chip deformation against the insert chipbreaker pocket, or choose a tighter radius configuration (like 0.4mm nose radius).\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eProblem - Rapid Nose Radius Chipping:\u003c\/em\u003e Lower your circumferential surface speed (Vc) index or switch to an advanced multi-layered CVD coated variant (such as the BEYOND BYM25 grade matrix).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWorkpiece Material Suitability Matrix:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"beyond-badge-container\"\u003e\n\u003cdiv class=\"beyond-badge\"\u003eP - Steel Alloys (Fully Optimized)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eM - Stainless Steel Matrices (Highly Suitable)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eK - Cast Iron Variants (Compatible Setup)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eN - Non-Ferrous Alloys (Excellent with Polished Inserts)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43621541347500,"sku":"S16Q-STUPR11","price":18.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S16Q-STUPR11_right_hand_internal_turning_tool_holder_16mm_steel_boring_bar_for_TPMT1103_carbide_inserts_CNC_lathe_internal_profiling.jpg?v=1780551415","url":"https:\/\/cnchome-beyond.com\/products\/beyond-s16q-stupr11-boring-bar-16mm-cnc-internal-turning-tool-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}