{"product_id":"beyond-s25s-svwbl16-left-hand-boring-bar-vbmt1604","title":"BEYOND S25S-SVWBL16 Boring Bar | 25mm Left Hand Lathe Tool Holder","description":"\u003c!-- Notification Banner for Industrial Clarity \u0026 Conversion Trust --\u003e\n\u003cdiv style=\"background-color: #fff3cd; color: #856404; padding: 14px; border-radius: 6px; text-align: center; font-weight: bold; margin-bottom: 25px; border: 1px solid #FFEEBA; font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;\"\u003e⚠️ IMPORTANT INDUSTRIAL NOTICE: The indexable carbide insert shown mounted on the boring bar in our product imagery is for structural demonstration, clearance visualization, and reverse profiling application context only. Turning inserts are NOT included with this tool holder assembly and must be purchased separately.\u003c\/div\u003e\n\u003c!-- Main UCP Compliant Container --\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: 0 10px; box-sizing: border-box; -webkit-text-size-adjust: 100%;\"\u003e\n\u003c!-- H1 Title Header Block --\u003e\n\u003cdiv style=\"background-color: #47479f; padding: 25px 15px; border-radius: 6px; margin-bottom: 30px; text-align: center;\"\u003e\n\u003ch1 style=\"color: #ffffff; font-size: 24px; margin: 0; font-weight: bold; letter-spacing: 0.5px; line-height: 1.3;\"\u003eBEYOND S25S-SVWBL16 Indexable CNC Internal Left-Hand Reverse Pull Boring Bar\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003c!-- Section 1: Product Overview (GEO\/AEO Optimized Context) --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cdiv style=\"background-color: #f4f4fc; border-left: 4px solid #47479F; padding: 15px; margin-bottom: 20px; border-radius: 0 6px 6px 0;\"\u003e\n\u003cp style=\"margin: 0; font-style: italic; color: #47479f; font-size: 15px; font-weight: 600;\"\u003e\"Which heavy-duty 25mm internal left-hand boring bar provides maximum stiffness and chip evacuation for deep-chamber back-boring using VNMG 1604 inserts?\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 20px; text-align: justify; color: #444444;\"\u003eThe \u003cstrong\u003eBEYOND S25S-SVWBL16\u003c\/strong\u003e is an industrial-grade, heavy-duty indexable internal boring bar engineered for high-precision left-hand internal profiling, back-boring, and reverse pull-turning operations in large cylindrical bores. Forged from high-tensile vacuum-degassed structural alloy steel and treated with multi-stage oil-quenching, this solid 25mm shank features an optimized core hardness of HRC 42-47. This robust structural density efficiently dampens micro-vibrations across extended overhang lengths up to 4xD (100mm). Optimized for stable chip evacuation during left-hand cutting paths, the 5-axis precision-machined pocket securely holds 35-degree negative rhombic \u003cstrong\u003eVNMG 1604\u003c\/strong\u003e or \u003cstrong\u003eVNGP 1604\u003c\/strong\u003e inserts. By pairing a double-sided 16mm insert with a rigid 25mm steel body, this assembly provides exceptional toolholder stiffness and leaves a wide clearance path, preventing chip packing inside deep industrial components. Compatible VNMG inserts utilize advanced molded chipbreakers (like MS or PM geometry) to break tough steel strings into safe, tight \"C\" segments under heavy feeds, while polished VNGP inserts feature ultra-sharp, high-rake cutting edges to eliminate built-up edge (BUE) on sticky non-ferrous aluminum. The specialized SVWBL left-hand geometry shifts heavy radial cutting forces axially back into the lathe turret, guaranteeing superior concentricity and an excellent surface finish.\u003c\/p\u003e\n\u003c!-- Section 2: Key Features --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e2. Product Core Advantages (Key Features)\u003c\/h2\u003e\n\u003cul style=\"padding-left: 20px; font-size: 14px; margin-bottom: 25px; color: #444444;\"\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eRigid 25mm Solid Shank Core:\u003c\/strong\u003e Exceptional structural steel mass to support stable bore entry, reducing micro-chatter across extended overhangs up to 100mm.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eSpecialized SVWBL Left-Hand Reverse Geometry:\u003c\/strong\u003e Perfectly configured for optimal clearance during internal pull-boring, back-boring, and left-hand profile contouring.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eHeavy-Duty Double-Sided Clamping Economy:\u003c\/strong\u003e Secure top-clamp pocket positioning engineered specifically to hold cost-effective, 4-edge VNMG 1604 inserts under heavy cutting forces.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eIndustrial Black-Oxide Shielding:\u003c\/strong\u003e High-durability coating prevents thermal abrasive wear and blocks water-soluble CNC coolant corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Section 3: Technical Specifications \u0026 Nomenclature --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e3. Technical Specifications \u0026amp; ISO Nomenclature\u003c\/h2\u003e\n\u003c!-- ISO Model Breakdown Box --\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 6px; margin-bottom: 25px; overflow: hidden; box-sizing: border-box;\"\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 12px; font-weight: bold; text-align: center; font-size: 14px; letter-spacing: 0.5px;\"\u003eISO Nomenclature Breakdown: S25S-SVWBL16\u003c\/div\u003e\n\u003cdiv style=\"padding: 15px; background-color: #ffffff;\"\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-size: 15px; font-weight: bold; display: block;\"\u003eS\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003eSteel Shank Bar\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-size: 15px; font-weight: bold; display: block;\"\u003e25\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003e25mm Shank Diameter\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-size: 15px; font-weight: bold; display: block;\"\u003eS\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003e250mm Overall Length\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-size: 15px; font-weight: bold; display: block;\"\u003eS\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003eScrew \u0026amp; Shim Lock\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-size: 15px; font-weight: bold; display: block;\"\u003eV\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003e35-Deg Rhombic Insert\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-size: 15px; font-weight: bold; display: block;\"\u003eW\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003e-5° Side Cutting Angle\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-size: 15px; font-weight: bold; display: block;\"\u003eB\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003e5-Deg Clearance Insert\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-weight: bold; display: block;\"\u003eL\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003eLeft-Hand Direction\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #47479f; font-size: 15px; font-weight: bold; display: block;\"\u003e16\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003e16mm Cutting Edge Size\u003c\/small\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Metric vs Imperial Dimension System Comparison Table --\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 600px; font-size: 13px; text-align: left; border: 1px solid #DDDDDD;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eDimension Attributes\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eMetric System Specifications\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eImperial Equivalent Values\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; background-color: #fdfdfd;\"\u003eModel Nomenclature\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; color: #47479f; font-weight: bold;\"\u003eS25S-SVWBL16 (BEYOND)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eA16S-SVWBL4 (Standard Inch Style Equivalent)\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;\"\u003eShank Clamping Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003e25 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003e1.000 inch (Standard 1\" Shank Block Size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; font-weight: bold; background-color: #fdfdfd;\"\u003eOverall Tool Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003e250 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003e9.84 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;\"\u003eMinimum Boring Diameter (D-min)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003e32 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003e1.260 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; font-weight: bold; background-color: #fdfdfd;\"\u003eCompatible Indexable Inserts\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eVNMG 1604** \/ VNGP 1604**\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eVNMG 43* \/ VNGP 43* Series (e.g., 431 or 432)\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;\"\u003eFastener Screw \/ Shim \/ Key\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eM3.5 * 10 \/ SV16 Shim \/ Torx T15\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eM3.5 * 10 \/ SV16 Shim \/ Torx T15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Recommended Machining Parameters: Double Column Reference Table --\u003e\n\u003ch3 style=\"color: #47479f; font-size: 15px; margin-top: 20px; margin-bottom: 12px; font-weight: 600;\"\u003eRecommended Machining Parameter Array (Starting Parameters)\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 500px; font-size: 13px; text-align: left; border: 1px solid #DDDDDD;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #fafaff; color: #47479f;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD; width: 40%;\"\u003eWorkpiece Material Substrates\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD; width: 60%;\"\u003eTarget Line Cutting Speed (Vc) \u0026amp; Feed Speed (f) Pairs\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; background-color: #fdfdfd;\"\u003eCarbon \u0026amp; Heavy Alloy Steels (P-Class)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eVc: 140-220 m\/min (460-720 sfm) | f: 0.08-0.25 mm\/rev (0.003-0.010 ipr)\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 Castings (M-Class \/ 304, 316)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eVc: 80-140 m\/min (260-460 sfm) | f: 0.06-0.20 mm\/rev (0.002-0.008 ipr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; font-weight: bold; background-color: #fdfdfd;\"\u003eAluminum Blocks \u0026amp; Non-Ferrous Metals (N-Class)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eVc: 300-800 m\/min (980-2620 sfm) | f: 0.08-0.30 mm\/rev (0.003-0.012 ipr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Direct Internal Link Block Box (UCP Conversion Optimizer) --\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; background-color: #fafaff; padding: 20px; border-radius: 6px; text-align: center; margin-bottom: 30px; box-sizing: border-box;\"\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 14px; font-weight: bold; color: #47479f;\"\u003eLooking for matching premium 35-degree left-hand VNMG\/VNGP 1604 indexable carbide inserts or alternative boring shanks?\u003c\/p\u003e\n\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; padding: 11px 22px; background-color: rgb(71, 71, 159); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; border-radius: 4px; font-size: 13px; transition: background 0.2s;\"\u003e\u003cb\u003e \u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=vbmt1103\" target=\"_blank\" rel=\"noopener\"\u003eSource BEYOND VNMG1604 Inserts \u0026amp; Toolbars Here → \u003c\/a\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- Section 4: Applications --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e4. Industrial Application Scenarios\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 15px; text-align: justify; color: #444444;\"\u003eThe combination of a heavy 25mm alloy steel body and a specialized left-hand pocket design makes the S25S-SVWBL16 highly effective for medium-to-heavy internal profiles:\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px; font-size: 14px; margin-bottom: 25px; color: #444444;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eInternal Left-Hand Back-Boring (Pull Turning):\u003c\/strong\u003e Engineered to process large pre-machined hollow forgings, hydraulic cylinders, and transmission gear blanks, cutting outward to clear steel chips away from deep internal steps.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eLarge-Diameter Profile Contouring:\u003c\/strong\u003e The 35-degree rhombic structural shape clears deep relief profiles inside large industrial valves, turbine housings, or heavy automotive components.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eHeavy Anti-Vibration Finishing Operations:\u003c\/strong\u003e Perfect for deep-reach overhangs up to 100mm where a solid 25mm body maximizes cross-sectional stiffness while a 16mm insert optimizes metal removal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Section 5: Compatibility --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e5. Equipment \u0026amp; Tool Compatibility\u003c\/h2\u003e\n\u003cul style=\"padding-left: 20px; font-size: 14px; margin-bottom: 25px; color: #444444;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eCNC Lathes \u0026amp; Boring Blocks:\u003c\/strong\u003e Fits directly into standard 25mm turret clamping stations, heavy-duty CNC boring sleeve adapters, or large conventional lathe tool blocks.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eUniversal Insert Indexing Compatibility:\u003c\/strong\u003e Precision engineered to hold standard ISO 35° negative VNMG 1604** \/ VNGP 1604** left-hand cutting profiles (optimally matched with 0.4mm, 0.8mm, or 1.2mm nose radii for ultra-stable roughing or precise micro-finishing).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Section 6: Grade Comparison --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e6. BEYOND Proprietary Grade Optimization Matrix\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 15px; color: #444444;\"\u003ePair your 25mm boring shank with the correct BEYOND carbide grade to optimize deep-chamber chipbreaking performance under heavy load:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px; -webkit-overflow-scrolling: touch;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 600px; font-size: 13px; text-align: left; border: 1px solid #DDDDDD;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eBEYOND Grade\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eCoating Technology\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eMaterial Application Intent\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eGlobal Equivalent Grade\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; background-color: #fdfdfd;\"\u003eBY1030\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eCVD Thick TiCN + Al2O3 Matrix\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eContinuous-to-Interrupted Carbon\/Alloy Steel High-Efficiency Internal Boring (P10-P30)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eSandvik GC4325 \/ Korloy NC3220\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;\"\u003eBY8020\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003ePVD Multi-Layered Nano-AlTiN\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eStainless Steels, Duplex Alloys, \u0026amp; Tough Cr-Ni Superalloys (M15-M35 \/ S15-S30)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eSandvik GC1115 \/ Kennametal KC5010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; font-weight: bold; background-color: #fdfdfd;\"\u003eBYC25\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eUncoated Ti-Based Cermet Core\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eHigh-Speed Dimensional Gloss Finishing \u0026amp; Tight Radial Tolerance Precision Control\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eKyocera TN60 \/ Mitsubishi NX2525\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 Global Reviews --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e7. Why Choose BEYOND Cutting Systems\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 20px; text-align: justify; color: #444444;\"\u003eBEYOND designs industrial turning components optimized for high-volume B2B manufacturing. Our 25mm internal boring shanks are manufactured from multi-stage heat-treated alloy steel to ensure maximum dampening parameters under cross-sectional loads. Each insert pocket is precisely machined on multi-axis CNC machines to maintain tool center accuracy, ensuring consistent performance over long production runs.\u003c\/p\u003e\n\u003c!-- Boxed Layout for Customer Reviews --\u003e\n\u003cdiv style=\"display: block; margin-bottom: 30px;\"\u003e\n\u003c!-- Review 1 - USA --\u003e\n\u003cdiv style=\"border: 1px solid #47479F; border-radius: 6px; padding: 15px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffc107; font-size: 15px; margin-bottom: 6px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong style=\"display: block; font-size: 13px; margin-bottom: 4px; color: #333333;\"\u003eDavid M. — United States\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"Excellent 25mm left-hand bar for heavy internal profiling. Getting deep into large bores while maintaining rigid stability used to cause serious chatter on our lathe turrets. Switched to this tool with VNMG 1604 inserts—absolutely flawless surface finish and rock-solid tool life.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Review 2 - Germany --\u003e\n\u003cdiv style=\"border: 1px solid #47479F; border-radius: 6px; padding: 15px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffc107; font-size: 15px; margin-bottom: 6px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong style=\"display: block; font-size: 13px; margin-bottom: 4px; color: #333333;\"\u003eJürgen S. — Germany\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"Sehr robuste 25mm Bohrstange. Der Plattensitz für die VNMG 1604 Wendeschneidplatte ist äußerst präzise gefertigt. Wir nutzen sie für die schwere Innen-Rückwärtsbearbeitung von großen Hydraulikzylindern. Die Vibrationsdämpfung bei 100mm Auskragung ist absolut erstklassig.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Review 3 - Italy --\u003e\n\u003cdiv style=\"border: 1px solid #47479F; border-radius: 6px; padding: 15px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffc107; font-size: 15px; margin-bottom: 6px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong style=\"display: block; font-size: 13px; margin-bottom: 4px; color: #333333;\"\u003eFabrizio G. — Italy\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"Stelo sinistro pesante e robusto. Il corpo in acciaio da 25mm assorbe le vibrazioni in modo eccellente su fori superiori a 32mm. Ottimo risparmio usando gli inserti VNMG a 4 taglienti.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Review 4 - Japan --\u003e\n\u003cdiv style=\"border: 1px solid #47479F; border-radius: 6px; padding: 15px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffc107; font-size: 15px; margin-bottom: 6px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong style=\"display: block; font-size: 13px; margin-bottom: 4px; color: #333333;\"\u003eKenji S. — Japan\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"S25S-SVWBL16を購入。25mmシャンクの剛性が非常に高く、大径深穴の引き戻し倣い加工でもびびりが全く出ません。負角のVNMG 1604チップを使用するため刃先コストが抑えられ、量産加工ラインで重宝しています。\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Review 5 - UK --\u003e\n\u003cdiv style=\"border: 1px solid #47479F; border-radius: 6px; padding: 15px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffc107; font-size: 15px; margin-bottom: 6px;\"\u003e★★★★☆\u003c\/div\u003e\n\u003cstrong style=\"display: block; font-size: 13px; margin-bottom: 4px; color: #333333;\"\u003eAlistair H. — United Kingdom\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"High-grade industrial build quality. The top-clamp system securely locks the 16mm profiling inserts under high feed rates. Very satisfied with the rigidity.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 8: AI-Style FAQ \u0026 Troubleshooting Guide --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e8. AI-Style FAQ \u0026amp; Troubleshooting Guide\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 25px;\"\u003e\n\u003c!-- Q1 --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 12px; border-radius: 6px 6px 0 0; font-weight: bold; font-size: 14px;\"\u003eQ: What is the minimum boring diameter (D-min) for this S25S-SVWBL16 boring bar?\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #47479F; border-top: none; padding: 15px; margin-bottom: 15px; border-radius: 0 0 6px 6px; font-size: 13.5px; background-color: #fdfdfd; text-align: justify; color: #444444;\"\u003eA: The minimum boring diameter for this specific tool holder is 32mm (1.260\"). This clearance is strictly required to accommodate the 25mm body diameter and the special offset head height of the SVWBL left-hand configuration holding the 16mm indexable insert.\u003c\/div\u003e\n\u003c!-- Q2 --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 12px; border-radius: 6px 6px 0 0; font-weight: bold; font-size: 14px;\"\u003eQ: Are turning inserts supplied inside the standard package?\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #47479F; border-top: none; padding: 15px; margin-bottom: 15px; border-radius: 0 0 6px 6px; font-size: 13.5px; background-color: #fdfdfd; text-align: justify; color: #444444;\"\u003eA: No. Indexable carbide cutting inserts are entirely excluded from the tool holder package. The base unit contains (1) S25S-SVWBL16 quenched steel boring bar, (1) base shim, (1) insert clamping screw\/clamp set, and (1) Torx T15 drive key. Matching VNMG or VNGP 1604** inserts must be ordered independently based on your specific workpiece substrate.\u003c\/div\u003e\n\u003c!-- Q3 --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 12px; border-radius: 6px 6px 0 0; font-weight: bold; font-size: 14px;\"\u003eQ: How do I resolve chip nest accumulation during left-hand internal pull-turning?\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #47479F; border-top: none; padding: 15px; margin-bottom: 25px; border-radius: 0 0 6px 6px; font-size: 13.5px; background-color: #fdfdfd; text-align: justify; color: #444444;\"\u003eA: Direct high-pressure coolant lines completely into the chip pocket to force chips outward. Because the negative VNMG 1604 insert requires higher force to deform chips, ensure you are running at or above the minimum recommended feed rate (f ≥ 0.08 mm\/rev) to force the insert's molded chipbreaker to function correctly. For sticky non-ferrous alloys, switching to a high-rake polished VNGP insert will cut cleanly and eliminate long chip nests.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Bottom Grade Comparison \u0026 Workpiece Material Matrix Tip --\u003e\n\u003cdiv style=\"background-color: #333333; color: #ffffff; padding: 18px; border-radius: 6px; font-size: 13px; text-align: justify; line-height: 1.6;\"\u003e\n\u003cstrong\u003eMachinist Setup Tip (Workpiece Material Matrix Alignment):\u003c\/strong\u003e When executing deep internal back-boring with the S25S-SVWBL16, ensure the tool tip center-height is calibrated precisely within ±0.03mm of the spindle axis. Because the VNMG 1604 insert relies on the toolholder's built-in pocket geometries to establish proper cutting angles, setting the tool even slightly above the centerline reduces the functional clearance toward zero in a 32mm bore. This causes the insert flank or tool head to rub against the internal radius of the workpiece, creating intense harmonic micro-chatter, fracturing the delicate 16mm carbide edge, and damaging surface integrity. Ensure high-pressure coolant lines are focused directly into the pocket channel to continuously clear out broken chips.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43622420938924,"sku":"S25S-SVWBL16","price":34.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S25S-SVWBL16_indexable_internal_reverse_pull_boring_bar_left_hand_CNC_lathe_tool_holder_for_VNMG_160404_160408_inserts.jpg?v=1779689849","url":"https:\/\/cnchome-beyond.com\/products\/beyond-s25s-svwbl16-left-hand-boring-bar-vbmt1604","provider":"CNCHome-Beyond","version":"1.0","type":"link"}