{"product_id":"s20r-sdxcr11-boring-bar-tool-holder-dcmt","title":"BEYOND S20R-SDXCR11 Boring Bar | 20mm CNC Lathe Right Hand Internal Turning Tool Holder for DCMT 11T3 Inserts","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  *, *::before, *::after {\n    box-sizing: border-box;\n  }\n  .beyond-h1-holder {\n    background-color: #47479F;\n    color: #ffffff;\n    padding: 24px;\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    font-size: 14px;\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    text-align: left;\n    margin-top: 15px;\n  }\n  .beyond-code-letter {\n    border: 1px solid #47479F;\n    border-radius: 4px;\n    padding: 10px;\n    width: 135px;\n    display: inline-block;\n    vertical-align: top;\n    margin: 5px;\n    background-color: #ffffff;\n    text-align: center;\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-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    margin-top: 15px;\n  }\n  .beyond-badge {\n    display: inline-block;\n    background-color: #47479F;\n    color: white;\n    padding: 6px 12px;\n    border-radius: 20px;\n    font-size: 13px;\n    font-weight: 500;\n    margin: 4px;\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 { width: 45%; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"beyond-container\"\u003e\n\u003cdiv class=\"beyond-h1-holder\"\u003e\n\u003ch1\u003eBEYOND S20R-SDXCR11 Boring Bar – 20mm Right Hand Steel Screw Locking CNC Lathe Internal Turning Tool Holder\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-alert-box\"\u003e⚠️ PLEASE NOTE: The indexable carbide insert seated on the cutting head in our product imagery is for structural demonstration and mounting orientation purposes only. It is NOT included in the boring bar package. Please purchase your matching right-hand or neutral inserts separately.\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e1. Product Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\"Which 20mm right-hand boring bar provides the optimal clearance angle and rigidity for complex 62.5° internal profiling and back-boring with DCMT 11T3 inserts?\"\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eBEYOND S20R-SDXCR11\u003c\/strong\u003e represents the definitive industrial standard for a \u003cstrong\u003eSolid Alloy Steel Right Hand Internal Turning Boring Bar\u003c\/strong\u003e, precision-developed to execute highly consistent deep internal profiling, back-boring, and copy-turning cycles within restrictive bore sizes. Engineered with a robust \u003cstrong\u003e20mm shank diameter\u003c\/strong\u003e and a length of 200mm, this tool holder delivers an outstanding mechanical advantage in stabilizing medium-reach overhangs. It acts as a rugged barrier against harmonic micro-chatter during deep internal passes, ensuring tighter dimensional repeatability across continuous heavy-turning production shifts.\u003c\/p\u003e\n\u003cp\u003eThis premium tool holder is meticulously pocket-milled to house standard \u003cstrong\u003eDCMT 11T3xx \/ DCGT 11T3xx\u003c\/strong\u003e 55-degree rhombic indexable carbide inserts (Imperial matching size: DCMT 32.5x). Incorporating a specialized 62.5-degree approach\/lead angle layout, it redirects high radial push deflection into stable axial forces running straight down the longitudinal core of the 20mm alloy steel body. When paired with high-performance positive-ground chipbreaker geometries, the cutting edge splits tough workpiece fibers seamlessly. The specialized orientation of the insert pocket forces instant chip breaking, snapping continuous metal ribbons into compact, light swarf spirals that lift out smoothly from a minimum bore clearance of 25mm, protecting the machined surface from scratching or bird-nesting traps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e2. Product Core Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Right-Hand (RH) Layout:\u003c\/strong\u003e Fully optimized configuration for standard forward spindle directions (M03) and standard turret clamping setups in heavy-duty internal cavities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum-Hardened High-Tensile Alloy Steel Body:\u003c\/strong\u003e Thermal-treated matrix increases fatigue limits and yields superior dampening characteristics under variable chip thicknesses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e62.5° Profiling \u0026amp; Back-Boring Approach Geometry:\u003c\/strong\u003e Allows excellent multi-directional accessibility for profiling shapes and clearing complex inner steps without tool-body interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Profile Torx Screw Clamping System:\u003c\/strong\u003e Utilizes a highly flush M4 screw locking mechanism that completely eliminates bulky top clamps, maximizing clear chip evacuation space in narrow cavities.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e3. Technical Specifications \u0026amp; Metric\/Imperial Nomenclature Cross-Guide\u003c\/h2\u003e\n\u003cp\u003eAbsolute geometric clarity is required for accurate CNC tool offsets. Below is the precise international ISO classification breakdown for the \u003cstrong\u003eS20R-SDXCR11\u003c\/strong\u003e model:\u003c\/p\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\u003e20\u003c\/strong\u003e20mm Diameter\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003e200mm 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\u003eD\u003c\/strong\u003e55° Rhombic Insert\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eX\u003c\/strong\u003e62.5° Approach\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eC\u003c\/strong\u003e7° Clearance\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003eRight-Hand Cut\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003e11\u003c\/strong\u003e11mm Edge Size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003e20 mm\u003c\/td\u003e\n\u003ctd\u003e0.7874 inches (Adapts flawlessly inside standard 3\/4\" or 13\/16\" split boring sleeves)\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\u003e200 mm\u003c\/td\u003e\n\u003ctd\u003e7.8740 inches (Standard mid-range format optimized for optimal internal reaches)\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\u003e25 mm\u003c\/td\u003e\n\u003ctd\u003e0.9842 inches (Provides exceptional clearance for clean chip removal in compact holes)\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\u003eDCMT 11T3xx \/ DCGT 11T3xx\u003c\/td\u003e\n\u003ctd\u003eDCMT 3(2.5)1 \/ DCMT 3(2.5)2 (3\/8\" IC Rhombic Size, 3.97mm Thick)\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\u003eM4.0 x 8.5 \/ M4.0 x 10\u003c\/td\u003e\n\u003ctd\u003eM4 Precision Screw Series\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\u003eT15\u003c\/td\u003e\n\u003ctd\u003eT15 Torx Wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\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\u003e130 - 210 m\/min (426 - 689 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.06 - 0.20 mm\/rev (0.0023 - 0.0078 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel Matrix (304, 316, 420)\u003c\/td\u003e\n\u003ctd\u003e80 - 140 m\/min (262 - 459 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.05 - 0.14 mm\/rev (0.0019 - 0.0055 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCast Iron Grades (GG25, GGG40)\u003c\/td\u003e\n\u003ctd\u003e90 - 170 m\/min (295 - 557 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.06 - 0.22 mm\/rev (0.0023 - 0.0086 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\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=dcmt11t3\" 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 DCMT 11T3 Carbide Inserts\u003c\/u\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e with optimized chipbreaker configurations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e4. Product Application Scenarios\u003c\/h2\u003e\n\u003cp\u003eThe rigid steel composition and versatile 20mm right-hand geometry make the S20R-SDXCR11 an irreplaceable asset across heavy production fields:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep Internal Back-Boring \u0026amp; Pull-Turning:\u003c\/strong\u003e Allows workshops to pull back toward the turret to clear deep blind-hole chambers without rubbing the tool body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplex Internal Profiling:\u003c\/strong\u003e The 55° diamond insert shape combines with the 62.5° approach angle to allow the tool to run intricate multi-directional interpolation paths with maximum clearance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Industrial Parts:\u003c\/strong\u003e Extensively deployed across CNC turning centers for machining intermediate hydraulic valves, custom pump sleeves, automotive transmission gears, and aerospace couplers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e5. Compatibility \u0026amp; Equipment Interface\u003c\/h2\u003e\n\u003cp\u003eThe ground 20mm cylindrical tool body locks firmly into industry-standard metric CNC lathe turrets, static VDI\/BMT tool block clamps, and linear boring bar sleeves. For workshops operating on imperial standards, it adapts flawlessly inside standard 3\/4\" or 13\/16\" imperial split bushes with minimal compression. This boring bar is fully compatible with premium CNC turning center equipment, including Haas, Mazak, DN Solutions\/Doosan, Okuma, Mori Seiki, and automated multi-axis mill-turn cells.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e6. BEYOND Premium Substrate \u0026amp; Grade Selection Matrix\u003c\/h2\u003e\n\u003cp\u003ePair your S20R-SDXCR11 boring bar with the appropriate BEYOND insert grade to maximize tool life and master chip breakages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYM11 Grade (PVD Coated Substrate):\u003c\/strong\u003e Structured with micro-hard TiAlN coatings. Optimized to stop built-up edges (BUE) on sticky materials like 316 stainless steel and high-temp alloys. Perfect for the fine, low-feed finishing passes typical of the 11T3 profile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYM25 Grade (Premium CVD Dual-Coated):\u003c\/strong\u003e Built with thick multi-layer Al2O3 + TiN coating lines. The benchmark standard for continuous, high-speed internal roughing passes on carbon structural steels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYK15 Grade (Ultra-Dense Micro-Grain):\u003c\/strong\u003e Formulated for maximum abrasive wear resistance. Custom-engineered for high-speed internal profiling of abrasive grey and ductile cast iron parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e7. Why Choose BEYOND Tooling Systems\u003c\/h2\u003e\n\u003cp\u003eBEYOND manufacturing centers strictly on micro-geometric tolerances. The S20R-SDXCR11 boring bar undergoes rigorous multi-axis automated milling and specialized induction heat treatments. By holding our indexable pocket seats within an ultra-precise ±0.01mm limit, we eliminate carbide micro-movement under heavy pounding. This ensures exceptional tool predictability, preventing unexpected part scrap and reducing downtime across your machining shifts.\u003c\/p\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 62.5 degree clearance for custom back-boring\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eWe had a problematic internal chamber that kept destroying standard 93-degree bars during internal interpolation back-facing cycles. This BEYOND S20R-SDXCR11 bar has the exact 62.5° clearance angle needed to dodge the internal steps. High rigidity, absolutely zero chatter at 3.5x overhang.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Brandon K., Machine Tool Lead (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\"Sehr stabile Qualität für schwere Dreharbeiten\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eDer 20mm Schaft verhält sich extrem laufruhig. Wir drehen damit Innenprofile in C45-Stahl. Minimale Vibrationen selbst bei zähem Material. BEYOND liefert immer Top-Qualität ab.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Dieter S., CNC Machinist (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 rapporto qualità-prezzo per stelo da 20mm\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eAlloy steel quality is top notch. The 62.5-degree approach profile handles tight internal steps cleanly with minimal micro-deflection. Screws lock flush.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Matteo G., CNC Workshop 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\"内径倣い加工に抜群の剛性\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003e20mmシャンクのサイズ感と200mmの長さが絶妙です。DCMT 11T3のチップを確実にホールドして、ビビりなく安定して削れます。内径コピー加工には欠かせません。\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Takashi H., Automotive Turning Lead (Japan)\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\"Excellent chip evacuation\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eRight-hand setups can be tricky for chip evacuation in deep narrow pockets, but the low-profile screw on this BEYOND bar creates plenty of clear space for high-pressure coolant washes.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Colin W., Aerospace Turning Specialist (United Kingdom)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 specific insert models match the pocket of the S20R-SDXCR11 boring bar?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: This tool holder is exclusively designed to mount standard \u003cstrong\u003eDCMT 11T3xx\u003c\/strong\u003e or \u003cstrong\u003eDCGT 11T3xx\u003c\/strong\u003e indexable 55-degree rhombic inserts. The '11' indicates a cutting edge length of approximately 11mm, and the 'T3' represents a thickness of 3.97mm. Note that since this is a right-hand (R) bar, it typically utilizes right-hand or neutral chipbreaker inserts depending on your turret setup and cutting direction.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-item\"\u003e\n\u003cdiv class=\"beyond-faq-q\"\u003eQ: What is the absolute minimum entry bore diameter for this 20mm tool holder?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: The minimum clear operating bore diameter (D-min) is approximately \u003cstrong\u003e25mm (0.9842 inches)\u003c\/strong\u003e. Attempting to feed this boring bar into a diameter smaller than 25mm will cause the back relief heel of the right-handed head structure to rub heavily against the inside walls, destroying your surface finish.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-item\"\u003e\n\u003cdiv class=\"beyond-faq-q\"\u003eQ: Can I use imperial DCMT 3(2.5)2 inserts on this metric S20R-SDXCR11 tool body?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: Yes. The metric specification '11' refers to an 11mm cutting edge length, which matches the 3\/8\" Inscribed Circle (IC) standard used in imperial \u003cstrong\u003eDCMT 3(2.5)x\u003c\/strong\u003e inserts. Both standard systems share the same thickness and pocket alignment parameters, making them fully interchangeable.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 In standard North American imperial machine catalogs, a 20mm metric tool body serves as a direct, high-precision alternative to a 3\/4-inch (0.75\" diameter) imperial right-hand boring bar when utilizing generic imperial split reduction bush systems.\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 - Rapid Edge Flaking \/ Chipping:\u003c\/em\u003e Ensure your center height alignment is calibrated perfectly on the spindle center. For right-hand bars, being even 0.05mm off-center radically alters the effective clearance angle, increasing friction and chipping the carbide tip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eProblem - Vibration and Chatter Marks:\u003c\/em\u003e Since the 20mm shank is steel, ensure your overhang ratio does not exceed 3x to 4x Diameter (60mm - 80mm extension length) for optimum rigidity. If you require deep reach up to 6x or 7x Diameter without chatter, consider upgrading to our custom solid carbide-shank boring bar series.\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 - Carbon \u0026amp; Structural Alloy Steels (Fully Optimized Setup)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eM - Stainless Steel Alloys \u0026amp; Duplex (Highly Suitable Application)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eK - Cast and Ductile Irons (Excellent Wear Resistance)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eN - Non-Ferrous Alloys \u0026amp; Aluminum (Compatible with Ground\/Polished DCGT Inserts)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43614733664428,"sku":"S20R-SDXCR11","price":21.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S20R-SDXCR11_right_hand_boring_bar_20mm_high-tensile_alloy_steel_shank_for_DCMT11T3_indexable_carbide_turning_inserts_62.5_degree_internal_profiling_anti_vibration.jpg?v=1780892282","url":"https:\/\/cnchome-beyond.com\/products\/s20r-sdxcr11-boring-bar-tool-holder-dcmt","provider":"CNCHome-Beyond","version":"1.0","type":"link"}