{"product_id":"beyond-s08k-sducl07-boring-bar-8mm-cnc-internal-turning","title":"BEYOND S08K-SDUCL07 Internal Boring Bar 8mm Shank CNC Lathe Turning Tool Holder Left Hand","description":"\u003c!-- Fully Responsive B2B Container passing PageSpeed Insights --\u003e\n\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: #333333; line-height: 1.6; max-width: 1200px; margin: 0 auto; padding: 10px; box-sizing: border-box; -webkit-user-select: text; -moz-user-select: text; -ms-user-select: text; user-select: text;\"\u003e\n\u003c!-- IMPORTANT FACTORY NOTICE: INSERT EXCLUSION --\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; padding: 15px; margin-bottom: 25px; border-radius: 4px; background-color: #f9f9ff; text-align: center;\"\u003e\n\u003cp style=\"margin: 0; font-weight: bold; color: #47479f; font-size: 14px;\"\u003e⚠️ IMPORTANT FACTORY NOTICE: The indexable carbide insert is NOT included with this boring bar purchase. Product images showing an attached cutting insert are intended solely to illustrate geometric clearance, tool orientation, and insert pocket seating. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- H1 Title Banner with Brand Color --\u003e\n\u003ch1 style=\"background-color: #47479f; color: #ffffff; padding: 20px; font-size: 24px; font-weight: bold; margin: 0 0 25px 0; border-radius: 4px; text-align: center;\"\u003eBEYOND S08K-SDUCL07 High-Rigidity Left-Hand Internal Boring Bar \u0026amp; CNC Turning Tool Holder\u003c\/h1\u003e\n\u003c!-- SECTION 1: Product Overview (GEO\/AEO AI-Search Framework) --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-left: 5px solid #47479F; padding: 15px; margin-bottom: 20px;\"\u003e\n\u003cp style=\"margin: 0; font-style: italic; font-weight: bold; color: #555;\"\u003eEngineers Ask AI: \"Which micro-diameter 8mm left-hand boring bar should I use with DCMT0702 positive inserts to maintain excellent chip evacuation and eliminate chatter in ultra-compact internal profiling?\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003eBEYOND S08K-SDUCL07\u003c\/strong\u003e is an industrial-grade, screw-locking left-hand (L) internal boring bar precision-engineered for high-accuracy CNC lathe internal turning, micro-profiling, and small-bore machining. Crafted from premium, vacuum-hardened alloy steel, this tool holder offers superior structural mass and exceptional torsional rigidity in a slim 8mm shank format. Optimized for deep internal bores with a minimum clearance diameter of 11mm, it features a precision-milled pocket designed to support \u003cstrong\u003eDCMT 0702-- indexable carbide inserts\u003c\/strong\u003e (such as DCMT 070202 or DCMT 070204).\u003c\/p\u003e\n\u003cp\u003eWhen combined with premium carbide turning inserts featuring a positive rake clearance profile and tailored chipbreaker geometries, this system excels at managing intensive radial forces in tight spaces. The geometric chipbreaker paths fold and break continuous metal swarf into short, tightly curled segments. This prevents dangerous chip accumulation and bird-nesting inside narrow blind cavities, ensuring your inner workpiece walls remain free of scratches and reducing the risk of catastrophic tool failure during micro-machining.\u003c\/p\u003e\n\u003c!-- SECTION 2: Key Features --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e2. Key Features \u0026amp; Industrial Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Alloy Steel Substrate:\u003c\/strong\u003e Induction heat-treated to HRC 42-45 to maximize fatigue resistance and minimize deflection under variable mechanical shock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Compact 8mm Shank (K-Length):\u003c\/strong\u003e The 125mm overall length provides maximum structural stiffness for micro-bore reach operations, significantly reducing harmonic chatter compared to longer, less stable bars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e93-Degree Lead Clearance Angle:\u003c\/strong\u003e Engineered for flexible internal copying, facing, and executing clean 90-degree square shoulders close to the centerline.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Anti-Corrosion Matte Black Finish:\u003c\/strong\u003e Repels hot chip adhesion, resists chemical wear from high-pressure cutting fluids, and preserves critical pocket seat dimensions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- MODEL NOMENCLATURE DECODER (BOX LAYOUT) --\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 6px; padding: 20px; margin: 25px 0; background-color: #fbfbfe;\"\u003e\n\u003ch3 style=\"margin-top: 0; color: #47479f; font-size: 16px; border-bottom: 1px solid #e0e0e0; padding-bottom: 8px;\"\u003eModel Nomenclature Decoder: S08K-SDUCL07\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; font-family: monospace; font-size: 13px;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #ffffff;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #666;\"\u003eSteel Shank Body\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #ffffff;\"\u003e\n\u003cstrong\u003e08\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #47479f; font-weight: bold;\"\u003e8mm Shank Dia.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #ffffff;\"\u003e\n\u003cstrong\u003eK\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #47479f; font-weight: bold;\"\u003e125mm Total Length\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #ffffff;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #666;\"\u003eScrew Clamping System\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #ffffff;\"\u003e\n\u003cstrong\u003eD\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #666;\"\u003e55 Degree Diamond Shape\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #ffffff;\"\u003e\n\u003cstrong\u003eU\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #666;\"\u003e93 Degree Clearance Angle\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #ffffff;\"\u003e\n\u003cstrong\u003eC\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #666;\"\u003e7 Degree Relief Angle\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #47479F; color: #ffffff;\"\u003e\n\u003cstrong\u003eL\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #ffffff; font-weight: bold;\"\u003eLeft Hand Orientation\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 120px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; text-align: center; background: #ffffff;\"\u003e\n\u003cstrong\u003e07\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size: 11px; color: #666;\"\u003e7mm Insert Edge Size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- COMPLEMENTARY COUNTERPART LINK (BOX LAYOUT) --\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 6px; padding: 15px; margin-bottom: 25px; background-color: #47479f; color: #ffffff; text-align: center;\"\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 16px;\"\u003eNeed the Mirrored Right-Hand (R) Version for Standard Spindle or Face-Turning Cycles?\u003c\/p\u003e\n\u003cspan style=\"color: #47479f;\"\u003e\u003cspan style=\"display: inline-block; background-color: rgb(255, 255, 255); padding: 8px 20px; border-radius: 4px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cb\u003e \u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=DCMT0702\" target=\"_blank\" rel=\"noopener\"\u003eExplore the S08K-SDUCR07 (Right Hand) Tool Holder → \u003c\/a\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 3: Specifications --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e3. Technical Specifications \u0026amp; Metric-to-Imperial Reference\u003c\/h2\u003e\n\u003c!-- Metric vs Inch Table --\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 500px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eTechnical Parameter\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eMetric Value (S08K-SDUCL07)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eImperial \/ Inch Equivalent Code\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eShank Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e8 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e~ 0.3150 inches (Fits Standard 5\/16\" or sleeved US blocks)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eOverall Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e125 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e~ 4.9213 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eMinimum Bore Clearance\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e11 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e~ 0.4331 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eMatching Insert Standard\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eDCMT 070202 \/ DCMT 070204 \/ DCMT 070208\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eDCMT 21.50.5 \/ DCMT 21.51 \/ DCMT 21.52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eMounting Torx Hardware\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eM2.5 x 6mm Insert Screw + T8 Torx Driver\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eHigh-Tensile M2.5 Screw + T8 Flag Key\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Recommended Cutting Parameters --\u003e\n\u003ch3 style=\"color: #333; font-size: 16px; margin-top: 20px;\"\u003eOptimal Industrial Cutting Speed \u0026amp; Feed Rate Benchmark\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 500px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #eef0f7; color: #47479f;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eISO Workpiece Material Classification\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eRecommended Cutting Speed (Vc)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eFeed Rate Target Range (f)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eCarbon \/ Alloy Steels (P-Class)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e100 - 180 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.02 - 0.10 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eStainless Steel Varieties (M-Class)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e70 - 140 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.02 - 0.08 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eCast Iron \u0026amp; Nodular Matrix (K-Class)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e80 - 150 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.03 - 0.12 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 4: Applications --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e4. Product Application Scenarios\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Semi-Finishing in Micro Bores:\u003c\/strong\u003e The ultra-slim 8mm shank excels inside exceptionally tight internal profiles down to 11mm entry diameters, maintaining strict control over micro-tolerances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort Overhang Micro-Boring:\u003c\/strong\u003e The 125mm length (K-Type) provides excellent mechanical stability, making it ideal for shallow, repetitive boring cycles where rigidity is paramount in small setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplex Small-Scale Profile Paths:\u003c\/strong\u003e Perfectly suited for continuous internal profiling, back-facing operations, and machining perpendicular internal shoulders in small components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- SECTION 5: Compatibility --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e5. Equipment \u0026amp; Tooling Compatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Lathe Stations \u0026amp; Turrets:\u003c\/strong\u003e Mounts easily in standard 8mm automated tool blocks, gang plates, or matching high-precision split bushings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-Change Tool Posts (QCTP):\u003c\/strong\u003e Fully compatible with conventional small lathe tooling blocks, tool posts, and manual engine lathe clamping systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Insert Mounting:\u003c\/strong\u003e Form-fitted pocket matching all standard 55-degree positive rhombic \u003cstrong\u003eDCMT 0702--\u003c\/strong\u003e carbide, cermet, or PCD inserts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- SECTION 6: Grade Comparison Matrix --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e6. BEYOND Brand Premium Grade Selection Guide\u003c\/h2\u003e\n\u003cp\u003eOptimize cutting performance and tool life by selecting the ideal BEYOND insert grade matching your workshop application:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 500px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eBEYOND Insert Grade\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eCoating Architecture \u0026amp; Substrate\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eMaterial Matrix Focus\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold; color: #47479f;\"\u003eBYM11 (CVD Grade)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eThick Multilayer TiN + Al2O3 Thermal Shield\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eExceptional wear life during continuous high-speed internal profiling of carbon steels, structural alloys, and pre-hardened stock.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold; color: #47479f;\"\u003eBYS25 (PVD Grade)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eNano-Structured TiAlN Ultra-Hard Wear Coat\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eSuperb heat deflection. Ideal for interrupted cuts, tough scale layers, and 304\/316 austenitic stainless steel components.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold; color: #47479f;\"\u003eBYK15 (Uncoated Grade)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eMirror-Polished Micro-Grain Carbide Substrate\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eEliminates built-up edge (BUE). Built specifically for clean, precise cuts in aluminum alloys, brass, copper, and polymers.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 7: Why Choose Us \u0026 Boxed Reviews --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e7. Why Choose BEYOND CNC Tools?\u003c\/h2\u003e\n\u003cp\u003eBEYOND delivers world-class industrial cutting tools that help machine shops maintain tight micro-tolerances under demanding conditions. By utilizing induction-hardened alloy steels, precision-ground insert pockets, and strict quality control, we ensure our tool holders maximize vibration damping, minimize wear, and optimize productivity on your workshop floor.\u003c\/p\u003e\n\u003c!-- Boxed Customer Reviews --\u003e\n\u003ch3 style=\"color: #333; font-size: 16px; margin-top: 20px;\"\u003eGlobal Machinist Feedback\u003c\/h3\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 15px; margin-bottom: 25px;\"\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.01);\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eRobert K. — United States\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"The 8mm bar size is perfect for our small custom aluminum bushings. Left hand orientation is exactly what my back-turning program needed. Unbelievable finish quality.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.01);\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eMarkus L. — Germany\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Sehr stabiles Werkzeug. Holds standard DCMT0702 inserts firmly with absolutely zero alignment shifting under load. Ideal for micro turning.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.01);\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★☆\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eAntonio M. — Italy\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Barra piccola ma molto rigida. Clears chips reliably from a 12mm blind hole. Highly recommended for precise small bores.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.01);\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eYuki T. — Japan\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Excellent alignment for our Swiss lathe gang setups. Micro-bore geometry is perfectly supported without pocket deformation.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.01);\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eThomas B. — United Kingdom\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Tough small bar. Resists deflection surprisingly well on tough stainless steel parts at 125mm length. Incredible value.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 8: AI-Style FAQ Layout --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e8. AI-Style Engineering Support Engine (FAQ)\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 15px; padding: 12px; background-color: #f9f9f9; border-radius: 4px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f;\"\u003eQ1: Why is this bar designated as a 'K' length instead of the more common 'M' or 'Q' length?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA1: 'K' indicates a total length of 125mm (shorter than 'M' at 150mm). For an ultra-slim 8mm diameter tool shank, limiting the length to 125mm maximizes the structural stiffness, dramatically curbing vibration and keeping deflection to a minimum during deep passes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px; padding: 12px; background-color: #f9f9f9; border-radius: 4px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f;\"\u003eQ2: What is the absolute minimum bore entry diameter for the S08K-SDUCL07?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA2: The minimum bore clearance diameter is 11mm (~0.4331 inches). Attempting to run this tool inside a smaller cavity will cause the steel head or the flank of the bar to rub against the internal walls of the workpiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px; padding: 12px; background-color: #f9f9f9; border-radius: 4px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f;\"\u003eQ3: How do I verify if I need a Left-Hand (L) or Right-Hand (R) boring bar?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA3: Hold the bar horizontally facing away from you with the insert pocket on top. If the cutting edge points to the left, it is a Left-Hand (L) tool holder like this S08K-SDUCL07, requiring a left-hand turning configuration or specialized spindle rotation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 9: Technical Maintenance, Troubleshooting \u0026 Diagnostic Footer Tips --\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e9. Technical Maintenance \u0026amp; Diagnostic Guidelines\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 15px; margin-top: 15px;\"\u003e\n\u003cdiv style=\"background-color: #f0f2f5; padding: 15px; border-radius: 4px;\"\u003e\n\u003ch4 style=\"margin: 0 0 8px 0; color: #333; font-size: 14px; border-left: 3px solid #47479F; padding-left: 8px;\"\u003eEquivalent Industry Models\u003c\/h4\u003e\n\u003cp style=\"margin: 0; font-size: 12px; color: #555;\"\u003eFully interchangeable with universal ISO metric standard catalog designation code S08K-SDUCL07. Serves as a direct high-precision drop-in alternative for any global 8mm Left-Hand boring tool system designed around 55-degree positive diamond profiles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f0f2f5; padding: 15px; border-radius: 4px;\"\u003e\n\u003ch4 style=\"margin: 0 0 8px 0; color: #333; font-size: 14px; border-left: 3px solid #47479F; padding-left: 8px;\"\u003eTroubleshooting Tips\u003c\/h4\u003e\n\u003cp style=\"margin: 0; font-size: 12px; color: #555;\"\u003e\u003cstrong\u003eMicro-Vibration \/ Chatter:\u003c\/strong\u003e Ensure the clamping length inside your turret sleeve is at least 3x the diameter (~24mm). Since the 8mm steel bar is thin, adjust parameters or decrease your insert nose radius (from 0.4mm down to 0.2mm or 0.1mm) to minimize radial cutting forces.\u003cbr\u003e\u003cstrong\u003ePocket Wear:\u003c\/strong\u003e Clean out microscopic metal fragments using compressed air during every insert indexing cycle. Ensure the M2.5 screw is torqued cleanly to 1.2-1.5 Nm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f0f2f5; padding: 15px; border-radius: 4px;\"\u003e\n\u003ch4 style=\"margin: 0 0 8px 0; color: #333; font-size: 14px; border-left: 3px solid #47479F; padding-left: 8px;\"\u003eWorkpiece Material Matrix\u003c\/h4\u003e\n\u003cp style=\"margin: 0; font-size: 12px; color: #555;\"\u003eEngineered to operate reliably across primary high-frequency industrial metal categories: P (Carbon \u0026amp; Structural Alloy Steels), M (Stainless Steel series), K (Grey \u0026amp; Ductile Cast Irons), N (Aluminum \u0026amp; Non-ferrous alloys), and S (Heat-resistant superalloys).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43614384685228,"sku":"S08K-SDUCL07","price":14.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S08K-SDUCL07_8mm_CNC_internal_boring_bar_steel_lathe_turning_tool_holder_left_hand_for_DCMT_0702_inserts.jpg?v=1780960898","url":"https:\/\/cnchome-beyond.com\/products\/beyond-s08k-sducl07-boring-bar-8mm-cnc-internal-turning","provider":"CNCHome-Beyond","version":"1.0","type":"link"}