{"product_id":"beyond-s25s-stupr11-boring-bar-tpmt-internal-turning-holder","title":"BEYOND S25S-STUPR11 Internal Turning Tool Holder for TPMR 1103 Inserts","description":"\u003c!-- Main Container - PageSpeed Insights \u0026 Core Web Vitals Optimized --\u003e\n\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: #333333; line-height: 1.6; max-width: 100%; margin: 0 auto; padding: 10px; box-sizing: border-box;\"\u003e\n\u003c!-- MANDATORY SELLER CLARIFICATION BANNER --\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; padding: 15px; margin-bottom: 25px; border-radius: 6px; background-color: #f9f9ff; text-align: center;\"\u003e\n\u003cp style=\"margin: 0; font-weight: bold; color: #47479f; font-size: 16px;\"\u003e⚠️ PLEASE NOTE: TOOL HOLDER ONLY (INSERTS EXCLUDED)\u003c\/p\u003e\n\u003cp style=\"margin: 5px 0 0 0; font-size: 14px; color: #555555;\"\u003eThe indexable carbide insert displayed in the boring bar images is for demonstration purposes only and is \u003cstrong\u003eNOT included\u003c\/strong\u003e in your purchase. Please browse and select your compatible TPMR 1103 or TPMN 1103 inserts separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- H1 HEADER ZONE (Brand Primary Color #47479F) --\u003e\n\u003ch1 style=\"background-color: #47479f; color: #ffffff; padding: 20px; font-size: 24px; text-align: center; border-radius: 6px; margin-top: 0; margin-bottom: 25px; font-weight: bold; letter-spacing: 0.5px;\"\u003eBEYOND S25S-STUPR11 Heavy-Duty Internal Turning Tool Holder\u003c\/h1\u003e\n\u003c!-- SECTION 1: PRODUCT OVERVIEW (GEO\/AEO AI Natural Language Format) --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px; margin-top: 30px;\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cdiv style=\"background-color: #f4f4f9; border-left: 4px solid #47479F; padding: 15px; border-radius: 0 6px; margin-bottom: 20px;\"\u003e\n\u003cp style=\"margin-top: 0; font-style: italic; color: #555555; font-size: 15px;\"\u003e\u003cstrong\u003eUser Query Context:\u003c\/strong\u003e \"Which high-rigidity internal indexable boring bar with a 25mm shank diameter provides stable chip breaking in deep cavities using a positive triangular insert?\"\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0; font-size: 15px;\"\u003eThe \u003cstrong\u003eBEYOND S25S-STUPR11\u003c\/strong\u003e is an industrial-grade steel internal boring bar engineered for high-rigidity lathe profiling where deep-reach clearance constraints require massive structural dampening. Featuring a precision-machined insert pocket, it accommodates 60-degree positive triangular \u003cstrong\u003eTPMR 1103\u003c\/strong\u003e or \u003cstrong\u003eTPMN 1103\u003c\/strong\u003e indexable carbide inserts. Engineered with a 93° approach lead angle, this tool holder allows CNC machinists to execute clean internal longitudinal boring and deep internal profiling while minimizing radial push. By channeling cutting forces directly along its robust 25mm quenched alloy steel shank, it mitigates harmonic chatter and guarantees flawless evacuation of chips inside narrow internal pockets down to a 32mm minimum bore opening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 2: KEY FEATURES --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px; margin-top: 30px;\"\u003e2. Product Key Features\u003c\/h2\u003e\n\u003cul style=\"padding-left: 20px; margin-bottom: 25px; font-size: 15px;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eHeavy-Duty 25mm Shank Diameter:\u003c\/strong\u003e Formulated for maximum torsional resistance, permitting aggressive depth of cut parameters during deep-hole internal boring.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003e93° Optimized Lead Angle:\u003c\/strong\u003e Excellent geometry for multi-directional longitudinal turning, allowing profiling cuts without tool body dragging or workpiece rubbing.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eRigid Top-Down Screw Clamping System:\u003c\/strong\u003e Utilizes high-tensile insert screws to lock the positive triangular insert tightly into the pocket, preventing deviations across long machining runs.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eAnti-Vibration Oxide Coating:\u003c\/strong\u003e Processed with a premium black matte surface chemical layer to resist hot chips, prevent abrasive wear, and ensure continuous material flow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- SECTION 3: SPECIFICATIONS \u0026 NOMENCLATURE DECODER --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px; margin-top: 30px;\"\u003e3. Technical Specifications \u0026amp; Nomenclature\u003c\/h2\u003e\n\u003c!-- MODEL NOMENCLATURE DECODER (BOX LAYOUT) --\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 6px; padding: 15px; margin-bottom: 25px; background-color: #ffffff;\"\u003e\n\u003ch3 style=\"margin-top: 0; color: #47479f; font-size: 16px; border-bottom: 1px dashed #47479F; padding-bottom: 5px;\"\u003eModel Designation Nomenclature Decoder\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; font-size: 13px; text-align: center; margin-top: 10px;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003eSteel Shank\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003e25\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003e25mm Shank\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003e250mm Length\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003e-\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003eSeparator\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003eScrew Clamp\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003eT\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003e60° Triangle\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003eU\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003e93° Lead Angle\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003eP\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003e11° Relief Angle\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #47479f; font-weight: bold;\"\u003eRight Hand\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 70px; background: #f4f4f9; padding: 8px; border-radius: 4px;\"\u003e\n\u003cstrong\u003e11\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #666;\"\u003eInsert Size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- METRIC VS INCH COMPARISON TABLE --\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; min-width: 500px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: white;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eSpecification (Metric)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eMetric Value\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eANSI \/ Inch Reference\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eInch Value Equivalent\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; background-color: #fdfdfd;\"\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003eS25S-STUPR11\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e\u003cstrong\u003eANSI Standard Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003eA16S-STUPR3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eShank Diameter (d)\u003c\/strong\u003e\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;\"\u003e\u003cstrong\u003eShank Diameter (Inch)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e1.000\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e\u003cstrong\u003eOverall Length (L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e250 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e\u003cstrong\u003eOverall Length (Inch)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e9.84\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eMinimum Bore (D min)\u003c\/strong\u003e\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;\"\u003e\u003cstrong\u003eMinimum Bore (Inch)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e1.260\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e\u003cstrong\u003eCompatible Insert\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003eTPMR 1103.. \/ TPMN 1103..\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e\u003cstrong\u003eANSI Insert Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003eTPMR 22.. \/ TPMN 22..\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- CUTTING PARAMETERS TABLE --\u003e\n\u003ch3 style=\"color: #47479f; font-size: 16px; margin-top: 20px;\"\u003eRecommended Cutting Parameters\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; min-width: 500px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #e9e9f4; color: #47479f;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eMaterial Classification\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eCutting Speed (Vc)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eFeed Rate (f)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eDepth of Cut (ap)\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;\"\u003eCarbon Steels \/ Mild Alloys (P)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e130 - 240 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.08 - 0.25 mm\/rev\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.20 - 2.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003eStainless Steel Alloys (M)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e90 - 170 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e0.06 - 0.18 mm\/rev\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003e0.15 - 1.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- INTERNAL INSERT LINKING (BOX LAYOUT) --\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 6px; padding: 15px; margin-bottom: 25px; text-align: center; background-color: #f9f9ff;\"\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 15px; color: #333;\"\u003eLooking for matching high-durability positive triangular inserts?\u003c\/p\u003e\n\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background-color: rgb(71, 71, 159); padding: 10px 20px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; border-radius: 4px;\"\u003e\u003cb\u003e \u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=TPMT1103\" target=\"_blank\" rel=\"noopener\"\u003e🛒 Shop Compatible TPMR 1103 Carbide Inserts Collection \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: 20px; margin-top: 30px;\"\u003e4. Product Applications\u003c\/h2\u003e\n\u003cp style=\"font-size: 15px;\"\u003eThe S25S-STUPR11 tool holder excels across mid-to-large internal lathe applications:\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px; margin-bottom: 25px; font-size: 15px;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eDeep-Hole Boring Operations:\u003c\/strong\u003e Engineered specifically to maximize structural stability when extending deep into bores down to 32mm ($D\\min$).\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eMedium Roughing to Finishing:\u003c\/strong\u003e The heavy 25mm steel cross-section tolerates aggressive material removal rates before transitioning smoothly into precision finishing passes.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eIndustrial Components Production:\u003c\/strong\u003e Ideal for turning heavy-duty hydraulic cylinders, industrial gear hubs, valve sleeves, marine shaft housings, and oilfield equipment fittings.\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: 20px; margin-top: 30px;\"\u003e5. Compatibility Guide\u003c\/h2\u003e\n\u003cul style=\"padding-left: 20px; margin-bottom: 25px; font-size: 15px;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eMachine Tool Mounting:\u003c\/strong\u003e Mounts natively into standard CNC turrets, boring bar holders, or large block adapters matching 25mm metric configurations.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eInsert Standardization Compliance:\u003c\/strong\u003e Fully universally compatible with standard positive triangular indexable elements with 11° clearance, such as TPMR 110304, TPMR 110308, or TPMN 110308.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- SECTION 6: MATERIAL GRADE COMPARISON --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px; margin-top: 30px;\"\u003e6. BEYOND Premium Grade Comparison Matrix\u003c\/h2\u003e\n\u003cp style=\"font-size: 15px;\"\u003eSelect the optimized BEYOND triangular insert grade pairing matching your workpiece alloy material matrix:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; min-width: 500px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: white;\"\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 Array\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003ePrimary Workpiece Target\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eFriction \u0026amp; Wear Resist\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; color: #47479f;\"\u003e\u003cstrong\u003eBY8150\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eNano-Structured PVD TiAlN\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eUniversal Steels, Carbon Alloys \u0026amp; Cast Iron Finishes\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eHigh thermal resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd; color: #47479f;\"\u003e\u003cstrong\u003eBY8200\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003eThick CVD TiCN + Al2O3 Layer\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003eContinuous Steel Roughing \u0026amp; High-Speed Automated Runs\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; background-color: #fdfdfd;\"\u003eSuperior crater wear defense\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; color: #47479f;\"\u003e\u003cstrong\u003eBY9030\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eHigh-Alloy PVD AlTiCrN\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e300\/400-Series Stainless Steels, Titanium, \u0026amp; Superalloys\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eAnti-built-up edge (BUE)\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 REVIEWS --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px; margin-top: 30px;\"\u003e7. Why Choose BEYOND CNC Tools\u003c\/h2\u003e\n\u003cp style=\"font-size: 15px;\"\u003eBEYOND designs industrial tooling that solves precise dimension spacing limits without sacrificing structural density. Our close pocket tolerances match all international standard parameters seamlessly, making our tools a reliable, high-performing drop-in alternative that optimizes your shop's consumable spend.\u003c\/p\u003e\n\u003ch3 style=\"color: #47479f; font-size: 16px; margin-top: 20px; margin-bottom: 15px;\"\u003eVerified Global Customer Reviews\u003c\/h3\u003e\n\u003c!-- REVIEWS BOX GRID --\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 15px; margin-bottom: 25px;\"\u003e\n\u003c!-- Review 1: USA --\u003e\n\u003cdiv style=\"border: 1px solid #dddddd; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.02);\"\u003e\n\u003cdiv style=\"color: #ffb400; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; font-size: 14px;\"\u003e\"Incredible Rigidity on Deep Bores\"\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 13px; color: #555555;\"\u003eWe run this at a 70mm overhang boring 4140 pre-hardened steel tubes. Outstanding stiffness, dimensional consistency is repeatable part-after-part.\u003c\/p\u003e\n\u003cspan style=\"font-size: 12px; color: #999999;\"\u003e— Thomas E., United States 🇺🇸\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- Review 2: Germany --\u003e\n\u003cdiv style=\"border: 1px solid #dddddd; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.02);\"\u003e\n\u003cdiv style=\"color: #ffb400; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; font-size: 14px;\"\u003e\"Perfekte Vibrationsdämpfung\"\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 13px; color: #555555;\"\u003eVery robust 25mm steel bar. Pocket geometry matches the TPMR 1103 inserts precisely. Zero micro-chatter during deep internal finishing cuts.\u003c\/p\u003e\n\u003cspan style=\"font-size: 12px; color: #999999;\"\u003e— Dieter H., Germany 🇩🇪\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- Review 3: Italy --\u003e\n\u003cdiv style=\"border: 1px solid #dddddd; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.02);\"\u003e\n\u003cdiv style=\"color: #ffb400; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★☆\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; font-size: 14px;\"\u003e\"Robusto e affidabile\"\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 13px; color: #555555;\"\u003eSubstantial weight and premium finish. Clears internal blind steps nicely due to the 93-degree angle layout. Excellent choice for our CNC turn-mill lathe.\u003c\/p\u003e\n\u003cspan style=\"font-size: 12px; color: #999999;\"\u003e— Lorenzo B., Italy 🇮🇹\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- Review 4: Japan --\u003e\n\u003cdiv style=\"border: 1px solid #dddddd; padding: 15px; border-radius: 6px; background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.02);\"\u003e\n\u003cdiv style=\"color: #ffb400; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; font-size: 14px;\"\u003e\"抜群の剛性感\"\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-size: 13px; color: #555555;\"\u003eExtremely clean thread lock mechanism. The insert fits securely without minor rotational displacement under load. Highly satisfied.\u003c\/p\u003e\n\u003cspan style=\"font-size: 12px; color: #999999;\"\u003e— Kenji Y., Japan 🇯🇵\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION 8: AI-STYLE FAQ --\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 20px; margin-top: 30px;\"\u003e8. Expert Engineering FAQ\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 15px; background: #ffffff; border: 1px solid #dddddd; padding: 15px; border-radius: 6px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f; font-size: 15px;\"\u003e❓ Q1: What is the absolute minimum bore entry size for this 25mm holder?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px; color: #444;\"\u003e💡 \u003cstrong\u003eA:\u003c\/strong\u003e The minimum bore diameter ($D\\min$) is exactly 32mm (1.260\"). Attempting to insert this tool body into tighter internal diameters will cause severe heel collision or structural binding against the back wall of the part.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px; background: #ffffff; border: 1px solid #dddddd; padding: 15px; border-radius: 6px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f; font-size: 15px;\"\u003e❓ Q2: What is the maximum recommended overhang ratio for this steel boring bar?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px; color: #444;\"\u003e💡 \u003cstrong\u003eA:\u003c\/strong\u003e For classic solid steel construction bars, it is highly recommended to limit your overhang stick-out extension length to 3 to 4 times the diameter ($25\\text{ mm} \\times 3 = 75\\text{ mm}$ up to $100\\text{ mm}$). Exceeding this boundary raises risk profiles for mechanical deflection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px; background: #ffffff; border: 1px solid #dddddd; padding: 15px; border-radius: 6px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f; font-size: 15px;\"\u003e❓ Q3: Why choose the 93° STUPR configuration over a standard 91° lead option?\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 14px; color: #444;\"\u003e💡 \u003cstrong\u003eA:\u003c\/strong\u003e The 93° lead angle directs the axial thrust forces back into the spindle rather than pushing radially into the workpiece. This reduction in radial force helps minimize chatter when executing long internal passes inside wide cavities.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- BOTTOM UTILITY BLOCK: MAINTENANCE \u0026 TECHNICAL DATA --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 20px; border-radius: 6px; margin-top: 35px; font-size: 14px;\"\u003e\n\u003ch4 style=\"margin-top: 0; color: #ffffff; font-size: 16px; border-bottom: 1px dashed rgba(255,255,255,0.4); padding-bottom: 5px;\"\u003e💡 Technical Troubleshooting \u0026amp; Cross-Reference Tips\u003c\/h4\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003e\u003cstrong\u003eEquivalent Model Cross-Reference Guide:\u003c\/strong\u003e Sandvik Coromant: A25S-STUPR11 | ISCAR: A25S-STUPR-11 | Kennametal: A25SSTUPR11D | Walter Tools: A25S-STUPR11\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003e\u003cstrong\u003eManaging Long Stringy Chips:\u003c\/strong\u003e If you observe ribbon-like metal nesting around the tool shank inside deep holes, increase your feed rate ($f$) or select a highly ground, positive geometric chipbreaker insert to snap the chips into tight, manageable curls.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0; font-weight: 300; font-size: 12px; opacity: 0.85;\"\u003eAll BEYOND professional tooling components undergo meticulous dimensional inspection before shipment. Always clean the pocket seat with compressed air before locking down a fresh insert edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43621558583468,"sku":"S25S-STUPR11","price":33.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND-S25S-STUPR11-internal-turning-tool-holder-boring-bar-CNC-lathe.jpg?v=1780206343","url":"https:\/\/cnchome-beyond.com\/products\/beyond-s25s-stupr11-boring-bar-tpmt-internal-turning-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}