{"product_id":"d25s-stucr16-internal-spring-steel-boring-bar","title":"BEYOND D25S-STUCR16 Spring Steel Internal Boring Bar – 25mm Shank 250mm Length CNC Lathe Turning Tool Holder for TCMT16T304 Inserts (Insert Not Included)","description":"\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: #333333; line-height: 1.6; max-width: 1000px; margin: 0 auto; padding: 20px; box-sizing: border-box; -webkit-user-select: text; user-select: text;\"\u003e\n\u003c!-- H1 Banner --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 30px; border-radius: 8px; text-align: center; margin-bottom: 30px;\"\u003e\n\u003ch1 style=\"margin: 0; font-size: 26px; color: #ffffff;\"\u003eBEYOND D25S-STUCR16 Spring Steel Internal Boring Bar\u003c\/h1\u003e\n\u003cp style=\"margin: 10px 0 0; color: #ffffff; opacity: 0.95; font-size: 16px;\"\u003eHeavy-Duty Internal Turning Tool Holder for TCMT16T304 Inserts | Industrial CNC Grade System\u003c\/p\u003e\n\u003cp style=\"margin: 8px 0 0; color: #ffeb3b; font-size: 13px; font-weight: bold;\"\u003e* Note: Indexable turning inserts shown in product images are for demonstration purposes only and are NOT included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 1. Product Overview --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin-bottom: 20px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cp style=\"background-color: #f7fafc; padding: 14px; border-left: 4px solid #47479F; margin: 16px 0; font-style: italic; color: #2d3748; font-size: 14px;\"\u003e\"Which industrial spring steel internal boring bar delivers maximum harmonic damping, rigidity, and chip clearance for internal profiling and deep-hole turning operations using TCMT16T304 inserts in bores starting from 32mm?\"\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 14px;\"\u003eThe \u003cstrong\u003eBEYOND D25S-STUCR16\u003c\/strong\u003e is a heavy-duty internal boring bar engineered for demanding CNC lathe turning operations. Forged from high-tensile spring steel to absorb cutting vibrations and mitigate harmonic chatter during long-overhang boring tasks, this tool features a 25mm metric shank diameter, an overall length of 250mm, and a minimum bore clearance diameter of 32mm. Built with a 93° approach angle (U-style geometry) and a robust screw-clamp mechanism, it securely locks \u003cstrong\u003eTCMT16T304\u003c\/strong\u003e indexable inserts (60° triangular format with 7° positive relief), providing free-cutting action, reduced cutting forces, and excellent internal surface finishes.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 16px; color: #1a202c; margin-top: 20px; margin-bottom: 12px;\"\u003eISO Nomenclature Breakdown: D25S-STUCR16\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px;\"\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003eD\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003eSpring Steel\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003e25\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003e25mm Shank\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003eS\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003e250mm Length\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003eS\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003eScrew-Down\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003eT\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003e60° Triangular\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003eU\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003e93° Approach\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003eC\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003e7° Positive\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003eR\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003eRight Hand\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 10px; border-radius: 6px; text-align: center; flex: 1; min-width: 60px; background: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 14px;\"\u003e16\u003c\/strong\u003e\u003csmall style=\"color: #4a5568; font-size: 11px;\"\u003eInsert Size\u003c\/small\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 2. Core Advantages --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin-bottom: 20px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e2. Product Core Advantages\u003c\/h2\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; color: #2d3748;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eVibration-Damping Spring Steel:\u003c\/strong\u003e Formulated with elevated modulus elasticity to absorb harmonic resonance during deep internal boring up to 4x Shank Diameter overhang.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003e93° Profile Versatility:\u003c\/strong\u003e STUCR geometry allows internal facing, step-boring, and profiling right up to square 90° shoulders without clearance interference.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eHigh-Rigidity Torx Screw Clamping:\u003c\/strong\u003e Keeps TCMT16T304 inserts rigidly seated against insert seat walls, preventing tool deformation and micro-chipping under heavy radial pressure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 3. Technical Specifications --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin-bottom: 20px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e3. Technical Specifications \u0026amp; Cutting Parameters\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 16px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #cbd5e0; text-align: left;\"\u003eMetric Model \u0026amp; Dimensions\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #cbd5e0; text-align: left;\"\u003eImperial Equivalent Class \u0026amp; Specs\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eMetric Model: \u003cstrong\u003eD25S-STUCR16\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eImperial Class: \u003cstrong\u003e1\" Shank Boring Bar\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eShank Diameter: 25 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eShank Diameter: ~0.984 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eMin. Bore Diameter (Dmin): 32 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eMin. Bore Diameter: ~1.260 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eOverall Length (L): 250 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eOverall Length: ~9.842 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"font-size: 15px; color: #1a202c; margin-top: 16px; margin-bottom: 8px;\"\u003eRecommended Starting Cutting Parameters\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 16px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #cbd5e0; text-align: left;\"\u003eWorkpiece Material Group\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #cbd5e0; text-align: left;\"\u003eCutting Speed (Vc)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #cbd5e0; text-align: left;\"\u003eFeed Rate (fn)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eCarbon Steel \/ Alloy Steel (ISO P)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e120 - 220 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e0.08 - 0.22 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eStainless Steel (ISO M)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e90 - 160 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e0.06 - 0.18 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eCast Iron (ISO K)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e100 - 190 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e0.08 - 0.20 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; border-radius: 8px; padding: 20px; text-align: center; background-color: #ffffff; margin-top: 20px;\"\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 16px; color: #47479f; font-weight: bold;\"\u003eLooking for Complete Boring Bar Series?\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=TCMT16T304\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background-color: rgb(71, 71, 159); padding: 12px 24px; border-radius: 6px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cb\u003e[View Boring Bar Series Collection] →\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 4. Applications --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin-bottom: 20px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e4. Product Application Scenarios\u003c\/h2\u003e\n\u003cp\u003eSpecially engineered for CNC manual and automatic lathe applications including medium-bore internal turning, step-boring, continuous finishing, and facing operations in cavities 32mm and larger. Ideal for producing precision hydraulic cylinders, automotive hubs, heavy flange couplings, and aerospace mechanical housings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 5. Compatibility --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin-bottom: 20px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e5. Compatibility \u0026amp; Tooling Accessories\u003c\/h2\u003e\n\u003cp\u003eCompatible with standard 25mm CNC turret tool blocks, boring bar sleeves, and split bushings. Engineered exclusively for ISO\/ANSI standard \u003cstrong\u003eTCMT16T304\u003c\/strong\u003e series indexable carbide inserts (60° triangular, 7° clearance, 16.5mm edge length, 3.97mm thickness, 0.4mm nose radius).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 6. Material Comparison \u0026 Workpiece Matrix --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin-bottom: 20px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e6. Workpiece Material Matrix \u0026amp; Grade Tips\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 12px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eMaterial Group\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eMachining Behavior \u0026amp; Recommended Insert Setup\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eP Group (Steels)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eSmooth continuous chip evacuation. Use PVD\/CVD coated carbide inserts with medium chipbreakers.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eM Group (Stainless Steel)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eProne to work-hardening. High dampening spring steel minimizes edge build-up (BUE).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eK Group (Cast Iron)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eAbrasive dust generation. High thermal conductivity inserts recommended.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 12px; color: #4a5568; margin: 0;\"\u003e\u003cstrong\u003eGrade Comparison Tip:\u003c\/strong\u003e Select positive 7° clearance (TCMT) over neutral negative inserts (TNMG) when machining small to medium internal diameters to lower cutting torque and prevent wall deflection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 7. Why Choose Us --\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 8px; padding: 24px; margin-bottom: 20px; background-color: #fcfcfc;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; text-align: center; margin-top: 0;\"\u003e7. Why Choose BEYOND Precision Tooling\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 16px;\"\u003e\n\u003cdiv style=\"text-align: center; padding: 12px; background: #ffffff; border: 1px solid #e2e8f0; border-radius: 6px;\"\u003e\n\u003cstrong style=\"color: #47479f;\"\u003eISO 5608 Standard\u003c\/strong\u003e\u003cbr\u003e\u003csmall style=\"color: #4a5568;\"\u003eStrict international geometric compliance and pitch accuracy.\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center; padding: 12px; background: #ffffff; border: 1px solid #e2e8f0; border-radius: 6px;\"\u003e\n\u003cstrong style=\"color: #47479f;\"\u003eVibration Damping\u003c\/strong\u003e\u003cbr\u003e\u003csmall style=\"color: #4a5568;\"\u003eSuperior spring steel core absorbs chatter during heavy cuts.\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center; padding: 12px; background: #ffffff; border: 1px solid #e2e8f0; border-radius: 6px;\"\u003e\n\u003cstrong style=\"color: #47479f;\"\u003eFactory Direct Quality\u003c\/strong\u003e\u003cbr\u003e\u003csmall style=\"color: #4a5568;\"\u003eEngineered for high dimensional consistency and long service life.\u003c\/small\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 8. AI-Style FAQ \u0026 Troubleshooting --\u003e\n\u003cdiv style=\"background-color: #1a1a2e; color: #ffffff; padding: 24px; border-radius: 8px; margin-bottom: 20px;\"\u003e\n\u003ch2 style=\"color: #ffffff; font-size: 20px; margin-top: 0; border-bottom: 1px solid #47479F; padding-bottom: 8px;\"\u003e8. AI-Style FAQ \u0026amp; Troubleshooting\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eQ: Are carbide inserts supplied together with the D25S-STUCR16 boring bar?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"color: #cbd5e0; margin-top: 0; margin-bottom: 16px;\"\u003eA: No. Inserts are intentionally sold separately, allowing machinists to select the exact carbide substrate, coating, and chipbreaker geometry best suited for their workpiece material.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eQ: What is the maximum recommended overhang for this 25mm spring steel bar?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"color: #cbd5e0; margin-top: 0; margin-bottom: 16px;\"\u003eA: For solid spring steel internal boring bars, the optimal ratio is up to 4x Shank Diameter (100mm overhang). For deeper ratios, lower depth of cut (Ap) or feed rate (fn) slightly to maintain concentricity.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eQ: What are the equivalent ISO models for this tool holder?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"color: #cbd5e0; margin-top: 0; margin-bottom: 16px;\"\u003eA: Standard equivalent coding under ISO 5608 is S25S-STUCR16 (where S indicates solid steel shank, STUCR designator indicates screw clamp, 93° approach, positive C clearance, Right hand, 16mm insert size).\u003c\/p\u003e\n\u003cdiv style=\"background-color: #2a2a4a; padding: 14px; border-radius: 6px; margin-top: 16px;\"\u003e\n\u003cstrong style=\"color: #ffeb3b; display: block; margin-bottom: 6px;\"\u003eTroubleshooting Chatter \u0026amp; Poor Finish:\u003c\/strong\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; color: #e2e8f0; font-size: 13px;\"\u003e\n\u003cli\u003eVerify tool center height: ensure edge is set strictly at lathe spindle centerline (±0.05mm).\u003c\/li\u003e\n\u003cli\u003eReduce tool overhang to minimum required depth inside turret sleeve.\u003c\/li\u003e\n\u003cli\u003eSwitch to a smaller nose radius insert (e.g., TCMT16T302) to lower radial cutting forces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Footer \u0026 Authoritative Endorsement --\u003e\n\u003cdiv style=\"margin-top: 24px; font-size: 11px; color: #718096; text-align: center; border-top: 1px solid #e2e8f0; padding-top: 16px;\"\u003eManufactured strictly following ISO 5608 and ANSI B212.4 specifications for internal turning toolholders. Mechanical dynamic testing confirms spring steel vibration damping performance up to 28% higher than standard 45CrMo alloy tool steel under equivalent machining torque.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"OYYU\/BEYOND","offers":[{"title":"Default Title","offer_id":43675201470636,"sku":"D25S-STUCR16","price":44.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_D25S-STUCR16_spring_steel_internal_boring_bar_technical_blueprint.jpg?v=1786956741","url":"https:\/\/cnchome-beyond.com\/products\/d25s-stucr16-internal-spring-steel-boring-bar","provider":"CNCHome-Beyond","version":"1.0","type":"link"}