{"product_id":"s25s-svubr16-beyond-boring-bar-cnc-internal-turning-holder","title":"BEYOND S25S-SVUBR16 Boring Bar | 25mm Lathe Tool Holder for VBMT 1604","description":"\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\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\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-SVUBR16 Indexable CNC Internal Right-Hand Profiling Boring Bar (Fits VBMT 1604)\u003c\/h1\u003e\n\u003c\/div\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 boring bar provides optimal side clearance and reduces micro-chatter during deep internal profiling with VBMT 1604 positive 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-SVUBR16\u003c\/strong\u003e is a premium industrial-grade indexable internal boring bar engineered specifically for high-precision right-hand profiling, complex taper pocketing, and 93-degree clearance turning in large bores. Forged from high-tensile structural alloy steel and multi-stage oil-quenched to HRC 42-47, this solid 25mm shank provides massive structural stiffness to eliminate harmonic vibrations over extended overhang reaches up to 4xD (100mm). Superbly optimized for intricate copy turning paths, the precision 5-axis machined pocket features an exact seating alignment designed exclusively to hold 35-degree positive rhombic \u003cstrong\u003eVBMT 1604\u003c\/strong\u003e or \u003cstrong\u003eVCGT 1604\u003c\/strong\u003e turning inserts. By combining a rigid 25mm steel bar with a 7° positive insert configuration, this assembly drastically lowers cutting resistance, ensures effortless chip evacuation, and prevents rubbing inside tight industrial profiles. The specialized SVUBR right-hand geometry directs heavy cutting forces axially back into the lathe turret, guaranteeing superior part concentricity, exceptional dimensional repeatability, and a mirror-like surface finish.\u003c\/p\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 Quenched Steel Shank (25mm):\u003c\/strong\u003e Massive alloy steel dampening capacity eliminates harmonic chatter across deep internal reaches up to 100mm.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003e93° Approach Geometry (4th Letter 'U'):\u003c\/strong\u003e Delivers pristine tool clearance for seamless internal profiling, pocket contouring, and back-boring.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eOptimized for VBMT 1604 Inserts:\u003c\/strong\u003e Precision pocket design perfectly secures 35° positive single-sided inserts, delivering low cutting forces and superior chip control.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px;\"\u003e\n\u003cstrong\u003eIndustrial Black-Oxide Shielding:\u003c\/strong\u003e Premium anti-wear treatment resists heat deformation and blocks corrosion from water-soluble CNC coolants.\u003c\/li\u003e\n\u003c\/ul\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\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-SVUBR16\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 Clamping System\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 2px solid #28a745; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #28a745; font-size: 15px; font-weight: bold; display: block;\"\u003eV\u003c\/span\u003e\u003csmall style=\"color: #333; font-size: 10px; display: block; margin-top: 4px;\"\u003e\u003cb\u003e2nd:\u003c\/b\u003e 35° Rhombic Shape\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;\"\u003eU\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003eTool Clearance Angle\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 80px; max-width: 110px; border: 2px solid #28a745; padding: 8px; border-radius: 4px; text-align: center; background: #FDFDFD;\"\u003e\n\u003cspan style=\"color: #28a745; font-size: 15px; font-weight: bold; display: block;\"\u003eB\u003c\/span\u003e\u003csmall style=\"color: #333; font-size: 10px; display: block; margin-top: 4px;\"\u003e\u003cb\u003e4th:\u003c\/b\u003e 93° Lead 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-weight: bold; display: block;\"\u003eR\u003c\/span\u003e\u003csmall style=\"color: #666; font-size: 10px; display: block; margin-top: 4px;\"\u003eRight-Hand Handed\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\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-SVUBR16 (BEYOND)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eA16S-SVUBR5 (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\" Block Fitment)\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;\"\u003eApproach Angle \/ Lead\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; color: #28a745; font-weight: bold;\"\u003e93 Degrees (4th Letter 'B')\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; color: #28a745; font-weight: bold;\"\u003e93 Degrees (4th Letter 'B')\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 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\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; font-weight: bold; background-color: #fdfdfd;\"\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 style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; font-weight: bold;\"\u003ePerfectly Compatible Inserts\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; font-weight: bold; color: #28a745;\"\u003eVBMT 1604** \/ VCGT 1604** (35° Positive)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD; font-weight: bold; color: #28a745;\"\u003eVBMT 43* Series (e.g., VBMT 431 \/ VBMT 432)\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;\"\u003eFastener Parts Assembly\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eM3.5 Insert Screw \/ Torx T15 Drive Wrench\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eM3.5 Insert Screw \/ Torx T15 Drive Wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color: #47479f; font-size: 15px; margin-top: 20px; margin-bottom: 12px; font-weight: 600;\"\u003eRecommended Cutting Parameters for VBMT 1604 Indexing Setup\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; Alloy Steels (P-Class \/ e.g., 4140, 1045)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eVc: 130-240 m\/min (425-780 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 Alloys (M-Class \/ 304, 316)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eVc: 90-160 m\/min (295-525 sfm) | f: 0.06-0.18 mm\/rev (0.002-0.007 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 \u0026amp; Copper Alloys (N-Class \/ With VCGT)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eVc: 250-700 m\/min (820-2300 sfm) | f: 0.05-0.30 mm\/rev (0.002-0.012 ipr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\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 premium 35-degree positive VBMT 1604 indexable carbide inserts to match this toolholder shank?\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=VBMT1604\" target=\"_blank\" rel=\"noopener\"\u003eSource BEYOND VBMT1604 Inserts \u0026amp; Toolbars Here → \u003c\/a\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\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\u003cul style=\"padding-left: 20px; font-size: 14px; margin-bottom: 25px; color: #444444;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eIntricate Internal Profiling \u0026amp; Copy Turning:\u003c\/strong\u003e Engineered specifically for processing multi-angle profiling passes and tapered back-boring steps in complex transmission gear boxes.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003e93-Degree Internal Clearance Pocketing:\u003c\/strong\u003e The specialized 4th letter 'B' orientation allows the bar head to drop into restrictive entry chambers while maintaining maximum clearance along long internal walls.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eHigh-Efficiency Deflection Mitigation:\u003c\/strong\u003e Pairing the solid 25mm core with a sharp positive insert shape creates localized shearing actions, minimizing push-off in deep industrial tubes.\u003c\/li\u003e\n\u003c\/ul\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 Equipment \u0026amp; Turrets:\u003c\/strong\u003e Mounts firmly into standard 25mm boring bar holders, quick-change toolposts, or VDI\/BMT turret blocks.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eUniversal Insert Clamping:\u003c\/strong\u003e Tailored for ISO specification 35° positive single-sided VBMT 1604** or VCGT 1604** inserts across all major manufacturers.\u003c\/li\u003e\n\u003c\/ul\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 Carbide Grade Matrix for VBMT\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 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 Multi-Layer TiCN + Al2O3\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eGeneral carbon and heavy structural alloy steel internal finish-to-medium boring.\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 High-Density Nano-AlTiN\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eStainless steel castings (304\/316) and high-temperature nickel-chrome superalloys.\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 Matrix\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #DDDDDD;\"\u003eHigh-speed precision micro-boring to achieve an mirror gloss surface finish.\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\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;\"\u003eEach BEYOND internal boring shank is engineered for strict dimensional repeatability across automated B2B production lines. Machined on precision 5-axis setups, our pocket geometries guarantee dead-on center alignment to prolong indexable edge life.\u003c\/p\u003e\n\u003cdiv style=\"display: block; margin-bottom: 30px;\"\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 L. — United States\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"Great profiling bar. The 93 degree layout is exactly what I needed for clearing complex internal steps. Running this at 4xD length on 4140 pre-hardened steel and getting zero chatter lines. Holds size very well over long runs.\"\u003c\/p\u003e\n\u003c\/div\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;\"\u003eHans W. — Germany\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"Hervorragende Qualität. Der Plattensitz passt perfekt für VBMT 160404. Die Späne fließen bei Innenkonturen sehr gut ab, ohne zu verknäueln. Sehr zu empfehlen für CNC-Drehmaschinen.\"\u003c\/p\u003e\n\u003c\/div\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;\"\u003eGiovanni M. — Italy\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"Bareno rigido. Ottima finitura superficiale accoppiato con l'inserto BYC25 cermet. Prezzo competitivo rispetto ai marchi europei.\"\u003c\/p\u003e\n\u003c\/div\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;\"\u003eTakashi S. — Japan\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"25mmの剛性は素晴らしい。VBMTチップの座面がしっかり作られており、長時間の連続切削でも刃先がぶれません。コストパフォーマンス最高です。\"\u003c\/p\u003e\n\u003c\/div\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;\"\u003eAlastair K. — United Kingdom\u003c\/strong\u003e\n\u003cp style=\"margin: 0; font-size: 12.5px; color: #555555; text-align: justify;\"\u003e\"Solid steel build. Pocket clearance is highly accurate for deep profile copying. Highly reliable on batch work.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px; font-weight: bold;\"\u003e8. Technical FAQ \u0026amp; Troubleshooting Guide\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 25px;\"\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 exact functional advantage of the 93° lead angle ('B' configuration) over a 95° 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 93-degree approach angle provides slightly improved tool head side clearance during continuous copy profile lines. It is engineered to perform steep internal tapers and back-taper tracks smoothly, reducing the possibility of the boring bar head coming into structural contact with the raw uncut shoulders of the bore.\u003c\/div\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 absolute minimum bore entry diameter for the S25S-SVUBR16?\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 entry bore diameter (D-min) is \u003cstrong\u003e32mm (1.260\")\u003c\/strong\u003e. This accounts for the 25mm shank mass and the structural offset of the tool head when loaded with a standard VBMT 1604 indexable insert. Operating inside a smaller bore will cause back-end friction.\u003c\/div\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 handle chip nesting or stringy chips during internal alloy steel profiling?\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: Stringy chips indicate that the feed rate is tracking below the molded insert chipbreaker threshold. Increase feed slightly (f ≥ 0.10 mm\/rev) to engage the chipbreaker matrix. For steel alloys, pair this toolholder with a BEYOND \u003cstrong\u003eBY1030 grade VBMT insert with a medium chipbreaker geometry\u003c\/strong\u003e to snap chips cleanly under light DOC (Depth of Cut). For aluminum substrates, switch to a polished \u003cstrong\u003eVCGT cermet\/carbide insert\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\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 profiling with the S25S-SVUBR16, ensure the tool tip center-height is calibrated precisely within ±0.03mm of the spindle axis. Because the VBMT 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":43622160990380,"sku":"S25S-SVUBR16","price":33.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S25S-SVUBR16_93_degree_indexable_internal_profiling_boring_bar_right_hand_CNC_lathe_tool_holder_for_VBMT_160404_VBMT_160408_inserts.jpg?v=1779690623","url":"https:\/\/cnchome-beyond.com\/products\/s25s-svubr16-beyond-boring-bar-cnc-internal-turning-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}