{"product_id":"beyond-s25s-svzbr11-boring-bar-cnc-internal-turning-tool-holder","title":"BEYOND S25S-SVZBR11 Internal Boring Bar 25mm Shank 250mm Length Screw Clamped Right Hand 72.5-Degree VBMT 1103 Lathe Turning Tool Holder","description":"\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\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⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images showing a mounted insert are provided strictly to illustrate geometric clearance, 72.5-degree profiling approach angle, and tight pocket alignment. \u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=VBMT110304\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cu\u003eClick here to shop premium indexable VBMT 1103 \/ VBIT 1103 (VB**1103**) 35-degree diamond carbide inserts.\u003c\/u\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\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 S25S-SVZBR11 Premium 25mm Shank 72.5° Screw-Clamped Right-Hand Internal Boring Bar (250mm Total Length \/ High-Rigidity CNC Lathe Profiling Tool)\u003c\/h1\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 high-rigidity right-hand internal boring bar featuring a 25mm shank diameter and 250mm length utilizes an S-type screw clamping system and a 72.5-degree approach angle for precise internal profiling and finishing with VBMT 1103 indexable carbide inserts?\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003eBEYOND S25S-SVZBR11\u003c\/strong\u003e is a highly rigid, industrial-grade Right-Hand (RH) internal boring tool holder engineered specifically for demanding deep-hole profiling, back-turning, undercut clearing, and high-precision finishing operations on CNC lathes and turning centers. Featuring a heavy-duty \u003cstrong\u003e25mm precision-ground solid alloy steel shank\u003c\/strong\u003e and an extended 250mm overall tool length (S-type length standard), this boring bar provides the structural mass and mechanical strength necessary to suppress chatter harmonics when machining deep within long cavities. Unlike bulky tool setups that utilize external top clamps or finger plates, the S25S-SVZBR11 incorporates a streamlined \u003cstrong\u003eS-type Screw Clamping system\u003c\/strong\u003e. By securing the indexable carbide insert directly through its countersunk center hole with a premium insert screw, it leaves the tool head entirely flush. This obstruction-free geometry provides maximum chip flute space, allowing curly metal shavings to clear out of narrow bores safely without wrapping around the tool stem.\u003c\/p\u003e\n\u003cp\u003eDesigned with a specialized 72.5-degree approach lead angle (Z-type geometry), this holder offers excellent structural clearance along both the face and internal wall of the workpiece. This makes it ideal for executing intricate internal tapers, continuous profiling tracks, and blind-hole finishing sweeps without rubbing the holder's steel flank. The precision-engineered insert seat pocket accommodates industry-standard 35-degree diamond positive inserts with a 5-degree normal clearance angle, specifically the \u003cstrong\u003eVBMT 110304 \/ VBMT 110308 \/ VBIT 110304\u003c\/strong\u003e series. When paired with modern multi-layer coated inserts featuring aggressive chipbreakers (such as -MV for medium finishing or -VF for super fine profiling), it forces long, ductile swarf ribbons into small, tight \"C\"-shaped chips that slide smoothly out of the \u003cstrong\u003e32mm minimum bore diameter\u003c\/strong\u003e. The combination of the rigid 25mm core and the sharp 35° diamond angle dramatically reduces cutting resistance and radial push-off forces, ensuring exceptional surface finishes and tight dimensional tolerances over high-volume production cycles.\u003c\/p\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: S25S-SVZBR11 (ISO \/ National Standard Chart Compliant)\u003c\/h3\u003e\n\u003cdiv style=\"margin-top: 12px; font-family: monospace; font-size: 13px;\"\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e - Solid High-Tensile Structural Alloy Steel Body Core (Maximum static anti-deflection stiffness)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003e25\u003c\/strong\u003e - 25mm Precision Cylindrical Clamping Shank Diameter (Heavy-duty core rigidity standard)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e - 250mm Industrial Standard Total Tool Core Length (Precision deep-reach specification)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; background: #f0f2f5; color: #333333;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e - \u003cstrong\u003eScrew Fastening Clamping Method\u003c\/strong\u003e (Low-profile center screw lock, ensures completely flush head for unhindered chip flow)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eV\u003c\/strong\u003e - 35° Rhombic Diamond Shape Pocket Seating (Accommodates standard positive VBMT 1103 style inserts)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; background: #f0f2f5; color: #333333;\"\u003e\n\u003cstrong\u003eZ\u003c\/strong\u003e - \u003cstrong\u003e72.5° Approach Lead Angle\u003c\/strong\u003e (Optimized side clearance for back-turning, tapering, and continuous profiling)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; background: #47479F; color: #ffffff;\"\u003e\n\u003cstrong\u003eB\u003c\/strong\u003e - \u003cstrong\u003e5° Normal Positive Relief Clearance Angle\u003c\/strong\u003e (Reduces cutting drag and radial pressure for ultra-clean finishes)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; background: #47479F; color: #ffffff;\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003e - \u003cstrong\u003eRight-Hand Tool Cutting Rotation Direction\u003c\/strong\u003e (Standard forward M03 internal turning toolpath setup)\u003c\/div\u003e\n\u003cdiv style=\"display: block; border: 1px solid #47479F; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003e11\u003c\/strong\u003e - Accommodates Standard 11mm Cutting Edge Length Inserts (VBMT 110304 \/ VBMT 110308)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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;\"\u003eOperating reverse profiling cycles or left-hand toolpaths on sub-spindles?\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=VBMT1103\" target=\"_blank\" rel=\"noopener\"\u003eSwitch to the Mirror S25S-SVZBL11 (Left Hand) Tool Bar → \u003c\/a\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e2. Product Core Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamber Profiling 72.5° Lead Angle:\u003c\/strong\u003e Specially optimized clearance geometry prevents back-wall rubbing during taper boring and internal undercut cleaning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlush Screw Clamping Layout:\u003c\/strong\u003e Center Torx locking screw eliminates bulky top clamps or fingers, leaving the tool head perfectly clear for aggressive swarf evacuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid 25mm Core Mass:\u003c\/strong\u003e Premium heat-treated alloy steel core (HRC 42-45) dampens high-frequency chatter harmonics across deep 250mm reach depths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSharp 35° Diamond Pocket Alignment:\u003c\/strong\u003e Holds positive 35-degree VBMT inserts securely, concentrating cutting forces axially to reduce radial tool deflection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Chip Flute Space:\u003c\/strong\u003e Streamlined low-profile design eliminates chip nesting or clogging inside 32mm minimum bores, avoiding workpiece surface scoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Wear Chemical Black Armor:\u003c\/strong\u003e Premium matte black oxide coating protects the pocket seating from hot abrasive chip wear and corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e3. Technical Specification Parameters \u0026amp; Model Comparison\u003c\/h2\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 Blueprint Field\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eMetric Blueprint Value (S25S-SVZBR11)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eImperial Inch Equivalent Model Reference\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;\"\u003eClamping Shank Diameter (φ d)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003e25 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.9842 inches (Fits standard 25mm metric CNC turret stations or 1-inch block pockets with precision split bushings)\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 (L)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003e250 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e9.8425 inches total tool length (S-Type industrial deep-reach standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eMinimum Machining Bore (φ Dmin)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003e32 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e1.2598 inches entry clearance circle line for precise profiling safety\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;\"\u003eCompatible Indexable Insert Sizing\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eVBMT 110302 \/ VBMT 110304 \/ VBMT 110308\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eVBMT 330.5 \/ VBMT 331 \/ VBMT 332 (Positive 35-degree rhombic double-sided standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eMatching Fasteners \u0026amp; Spares Included\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003ePremium M2.5 Torx Insert Screw \u0026amp; Flag-Type Torx T8 Wrench\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eStandard globally interchangeable industrial S-type hardware assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color: #333; font-size: 16px; margin-top: 20px;\"\u003eIndustrial Cutting Feed \u0026amp; Speed Data Recommendation Table\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 Group\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eCutting Speed (Vc) Range\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eRecommended Feed Rate (fn)\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;\"\u003eMild \/ Carbon Steel (P-Class \/ AISI 1020 \/ 1045)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e120 - 220 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.05 - 0.20 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;\"\u003eAlloy Steel \/ Tool Steel (P-Class \/ 4140 \/ SCM440)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e90 - 180 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.05 - 0.15 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eAustenitic Stainless Steels (M-Class \/ SS304 \/ SS316)\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;\"\u003e0.04 - 0.12 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;\"\u003eCast Irons \/ Nodular Irons (K-Class \/ G25 \/ GGG40)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e100 - 200 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.06 - 0.22 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\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 Internal Chamber Profiling:\u003c\/strong\u003e Highly suited for tracking complex internal curvatures, deep inner cones, and spherical geometries without holder body collision.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUndercutting \u0026amp; Relief Machining:\u003c\/strong\u003e The 72.5° side clearance combined with a sharp 35° insert allows operators to machine backward shoulder reliefs and clear localized seals safely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Smooth Bore Finishing:\u003c\/strong\u003e Delivers mirror-like internal finishes by pairing the dense 25mm rigid body mass with a sharp, low-drag micro-grain insert tip.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e5. Equipment Tooling Compatibility Matrix\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25mm \/ 1-inch Turret Mounting:\u003c\/strong\u003e Fits standard 25mm metric live turrets directly, or mounts into 1.0-inch imperial turret slots using standard cylindrical step split bushings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Sizing-11 Positive Inserts:\u003c\/strong\u003e The precision-ground pocket dimensions perfectly locate all positive standard 35-degree rhombic inserts designated by codes **VBMT 1103--** or **VBIT 1103--**.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e6. BEYOND Premium Carbide Grade Selection Guide\u003c\/h2\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 Cutting Insert Grade\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eCoating Micro-Structure Matrix\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003ePrimary Application Strengths\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 Double-Layer Al2O3 + TiCN Thermal Barrier\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eEngineered for high-speed, continuous dry profiling of carbon steel and alloy liners. Highly resistant to crater wear under intense friction.\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;\"\u003eSub-Micron Multi-Layered Nano-TiAlN Coating Shield\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eOutstanding edge sharpness and toughness. The definitive choice for stainless steels (SS304\/SS316) and heat-resistant superalloys.\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 Polished)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eMirror-Finished Sharp Micro-Grain Solid Carbide Matrix\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eCompletely eliminates Built-Up Edge (BUE). Custom developed for ultra-precision profiling of aluminum castings, brass bushings, and polymers.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\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 Machine Tools?\u003c\/h2\u003e\n\u003cp\u003eBEYOND delivers premium-engineered, industrial-grade indexable tool holders trusted by manufacturing facilities worldwide. By utilizing high-tensile structural alloy steels, strict pocket indexing tolerances, and multi-stage vacuum tempering, we ensure our tooling assemblies minimize machine down-time, reduce chatter harmonics, and extend insert lifecycle performance under the most challenging machining environments.\u003c\/p\u003e\n\u003ch3 style=\"color: #333; font-size: 16px; margin-top: 20px;\"\u003eGlobal Machinist Operational Reviews\u003c\/h3\u003e\n\u003cdiv style=\"display: block; margin-bottom: 25px;\"\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; margin-bottom: 12px;\"\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;\"\u003eMarcus D. — United States\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Flawless performance on internal tapers. The 25mm steel core is super rigid at full 200mm overhangs, and the 72.5° clearance avoids back-wall rubbing on 4140 steel shafts. Highly recommended.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; margin-bottom: 12px;\"\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;\"\u003eDieter S. — Germany\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Perfekte Profilierung! We turn internal hydraulic valve seats using VBMT 110304 inserts. The pocket machining tolerance is exceptionally tight. Zero insert shifting under cycling loads.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; margin-bottom: 12px;\"\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;\"\u003eKenji Y. — Japan\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"The S-type flush head design is excellent for narrow bores. Fine curly chips slide right out of the 35mm entry bore without nest-wrapping. Cleanest finish we've had in years.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; margin-bottom: 12px;\"\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;\"\u003eMatteo R. — Italy\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Excellent finishing bar for deep internal reliefs. Concentrates cutting forces down the axis perfectly. Surface finish is mirror-like when running light profiling cuts on stainless.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff;\"\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;\"\u003eBrent W. — Canada\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Holds up great on interrupted undercut tracks on alloy castings. The single Torx screw provides ample locking torque. The black finish stands up well to hot abrasive shavings.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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 choose a 72.5-degree approach angle instead of a 93-degree bar for internal profiling?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA1: A 72.5-degree approach angle (SVZBR) provides the wide geometric side clearance necessary to run taper sweeps, back-turning paths, and deep internal profiling without rubbing the holder's steel flank against the newly machined inner wall. It provides a level of versatility that a standard 93-degree bar cannot achieve.\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 benefit of the S-type screw clamping system over a top clamp on a profiling bar?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA2: Internal profiling generates long, ductile chip strands. Traditional top clamps project outward from the tool head, creating a physical barrier that catches these chip columns, leading to hazardous chip nesting. The S-type center screw lock leaves the tool head perfectly flush, providing an entirely smooth pathway for swarf evacuation.\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: What is the absolute minimum bore entry dimension for this S25S-SVZBR11 holder?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA3: The absolute minimum machining bore diameter (φ Dmin) is 32.0mm (1.2598 inches). Attempting to run this 25mm shank within smaller internal bores will lead to structural rubbing of the tool holder head flank against the inner arc line, causing severe vibration and cutting edge failure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e9. Technical Maintenance \u0026amp; Troubleshooting Guidelines\u003c\/h2\u003e\n\u003cdiv style=\"margin-top: 15px;\"\u003e\n\u003cdiv style=\"background-color: #f0f2f5; padding: 15px; border-radius: 4px; margin-bottom: 12px;\"\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;\"\u003eInterchangeable globally with standard international metric \u003cstrong\u003eS25S-SVZBR11\u003c\/strong\u003e internal profiling tool holders. For standard American imperial lathe configurations, this 25mm steel bar fits perfectly within standard 1.0-inch split boring bar sleeves or reduction block pockets, using standard ANSI positive indexable insert designations **VBMT 331** or **VBMT 332**.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f0f2f5; padding: 15px; border-radius: 4px; margin-bottom: 12px;\"\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\u003eHigh Surface Micro-Roughness:\u003c\/strong\u003e Ensure the tool tip cutting center height aligns precisely with the lathe spindle rotation axis (±0.01mm). An off-center setup shifts the active clearance angle, leading to excessive tool rubbing or rapid nose radius breakdown.\u003cbr\u003e\u003cstrong\u003eScrew Seizing \/ Thread Stripping:\u003c\/strong\u003e High heat from continuous profiling expands the alloy socket pocket. Periodically clean out fine metal particulate with compressed air and apply a thin coating of high-temperature copper anti-seize compound to the M2.5 screw threads.\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;\"\u003eFully optimized across standard industrial engineering material codes: \u003cstrong\u003eP\u003c\/strong\u003e (Carbon, Low-Alloy \u0026amp; Pre-hardened Mild Steels), \u003cstrong\u003eM\u003c\/strong\u003e (Austenitic, Ferritic \u0026amp; Duplex Stainless steel grades), \u003cstrong\u003eK\u003c\/strong\u003e (Grey \u0026amp; Ductile Cast Irons), \u003cstrong\u003eN\u003c\/strong\u003e (Precision Aluminum Blanks, Copper, Brass Alloys \u0026amp; Polymers), and \u003cstrong\u003eS\u003c\/strong\u003e (High-Temperature Superalloys \u0026amp; Titanium Alloys).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43323689762988,"sku":"S25S-SVZBR11","price":33.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S25S-SVZBR11_indexable_screw-clamped_right-hand_internal_boring_bar_with_25mm_steel_shank_250mm_length_and_72.5-degree_approach_angle_for_negative-rake_VBMT_110304_carbide_profiling_inserts.jpg?v=1781187051","url":"https:\/\/cnchome-beyond.com\/products\/beyond-s25s-svzbr11-boring-bar-cnc-internal-turning-tool-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}