{"product_id":"beyond-s25s-ssscr09-boring-bar-holder","title":"BEYOND S25S-SSSCR09 Boring Bar | 25mm CNC Lathe Internal Turning Tool Holder for SCMT 09T3 Inserts","description":"\u003cstyle\u003e\n  .beyond-container {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #333333;\n    line-height: 1.6;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 15px;\n    box-sizing: border-box;\n  }\n  *, *::before, *::after {\n    box-sizing: border-box;\n  }\n  .beyond-h1-holder {\n    background-color: #47479F;\n    color: #ffffff;\n    padding: 24px;\n    border-radius: 6px;\n    margin-bottom: 25px;\n  }\n  .beyond-h1-holder h1 {\n    margin: 0;\n    font-size: 24px;\n    font-weight: 700;\n    text-transform: uppercase;\n    letter-spacing: 0.5px;\n    color: #ffffff;\n  }\n  .beyond-section {\n    margin-bottom: 35px;\n  }\n  .beyond-section h2 {\n    color: #47479F;\n    border-left: 5px solid #47479F;\n    padding-left: 12px;\n    font-size: 20px;\n    margin-bottom: 15px;\n    font-weight: 600;\n  }\n  .beyond-section h3 {\n    color: #333333;\n    font-size: 16px;\n    margin-top: 20px;\n    margin-bottom: 10px;\n    font-weight: 600;\n  }\n  .beyond-alert-box {\n    background-color: #fff3cd;\n    border: 1px solid #ffeeba;\n    color: #856404;\n    padding: 15px;\n    border-radius: 6px;\n    margin-bottom: 25px;\n    font-weight: bold;\n    font-size: 14px;\n  }\n  .beyond-grid-box {\n    border: 2px solid #47479F;\n    border-radius: 6px;\n    padding: 20px;\n    margin-bottom: 25px;\n    background-color: #fcfcfd;\n  }\n  .beyond-code-breakdown {\n    text-align: left;\n    margin-top: 15px;\n  }\n  .beyond-code-letter {\n    border: 1px solid #47479F;\n    border-radius: 4px;\n    padding: 10px;\n    width: 135px;\n    display: inline-block;\n    vertical-align: top;\n    margin: 5px;\n    background-color: #ffffff;\n    text-align: center;\n  }\n  .beyond-code-letter strong {\n    color: #47479F;\n    font-size: 18px;\n    display: block;\n    border-bottom: 1px solid #e0e0e0;\n    padding-bottom: 5px;\n    margin-bottom: 5px;\n  }\n  .beyond-table-wrapper {\n    width: 100%;\n    overflow-x: auto;\n    margin: 15px 0;\n  }\n  .beyond-table {\n    width: 100%;\n    border-collapse: collapse;\n    min-width: 600px;\n  }\n  .beyond-table th, .beyond-table td {\n    border: 1px solid #dddddd;\n    padding: 12px;\n    text-align: left;\n    font-size: 14px;\n  }\n  .beyond-table th {\n    background-color: #47479F;\n    color: white;\n    font-weight: 600;\n  }\n  .beyond-table tr:nth-child(even) {\n    background-color: #f8f9fa;\n  }\n  .beyond-review-card {\n    border: 1px solid #e0e0e0;\n    border-radius: 6px;\n    padding: 15px;\n    margin-bottom: 15px;\n    background-color: #ffffff;\n    box-shadow: 0 2px 4px rgba(0,0,0,0.02);\n  }\n  .beyond-stars {\n    color: #ffc107;\n    margin-bottom: 5px;\n    font-size: 14px;\n  }\n  .beyond-review-meta {\n    font-size: 12px;\n    color: #777777;\n    margin-top: 5px;\n  }\n  .beyond-faq-item {\n    background-color: #f8f9fa;\n    border-left: 4px solid #47479F;\n    padding: 15px;\n    margin-bottom: 12px;\n    border-radius: 0 6px 6px 0;\n  }\n  .beyond-faq-q {\n    font-weight: bold;\n    color: #47479F;\n    margin-bottom: 5px;\n  }\n  .beyond-badge-container {\n    margin-top: 15px;\n  }\n  .beyond-badge {\n    display: inline-block;\n    background-color: #47479F;\n    color: white;\n    padding: 6px 12px;\n    border-radius: 20px;\n    font-size: 13px;\n    font-weight: 500;\n    margin: 4px;\n  }\n  .beyond-footer-panel {\n    border-top: 1px solid #e0e0e0;\n    padding-top: 25px;\n    margin-top: 30px;\n  }\n  @media (max-width: 768px) {\n    .beyond-h1-holder h1 { font-size: 20px; }\n    .beyond-section h2 { font-size: 18px; }\n    .beyond-code-letter { width: 45%; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"beyond-container\"\u003e\n\u003cdiv class=\"beyond-h1-holder\"\u003e\n\u003ch1\u003eBEYOND S25S-SSSCR09 Boring Bar – 25mm High Rigidity Solid Steel Screw Clamping Internal Lathe Turning Tool Holder\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-alert-box\"\u003e⚠️ PLEASE NOTE: The indexable carbide insert shown seated on the tool head in our product photography is for structural demonstration and orientation purposes only. It is NOT included in the boring bar package. Please purchase your compatible right-hand or neutral inserts separately.\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e1. Product Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\"Which boring bar configuration is best optimized to deliver high-rigidity vibration damping in 32mm internal diameters while utilizing economical SCMT 09T3 square inserts?\"\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eBEYOND S25S-SSSCR09\u003c\/strong\u003e is an industrial-grade, precision-manufactured \u003cstrong\u003eSolid Alloy Steel Internal Turning Boring Bar\u003c\/strong\u003e engineered to provide the perfect balance between high structural rigidity and localized tool head clearance. Featuring a robust \u003cstrong\u003e25mm shank diameter\u003c\/strong\u003e and a \u003cstrong\u003e250mm overall length\u003c\/strong\u003e, this right-hand tool holder is structurally optimized to counteract heavy bending moments and high cutting forces. Unlike lighter 20mm bars that suffer from deflection, the S25S frame provides a dense steel mass backbone, making it the ideal solution for deep hole internal profiling, continuous boring, and medium-duty roughing cycles on standard CNC lathes.\u003c\/p\u003e\n\u003cp\u003eThis indexable boring bar is custom-milled to host standard \u003cstrong\u003eSCMT 09T3 \/ SCGT 09T3\u003c\/strong\u003e (3\/8\" Inscribed Circle) square carbide inserts. The integration of a 75° approach angle with a square geometry ensures that the majority of mechanical cutting pressure is directed axially into the lathe spindle rather than radially, significantly reducing internal chatter. When paired with ground positive rake chipbreaker profiles, the tool cleanly shears metal fibers. The specialized chip groove geometry forces immediate chip curling, fracturing long, continuous ribbons into small, easily evacuating chips that are swept out effortlessly by flood coolant, preventing internal surface scratching or catastrophic tool tip binding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e2. Product Core Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Rigidity 25mm Solid Shank:\u003c\/strong\u003e Drastically reduces harmonic vibrations on deep internal overhang cuts up to 3xD depth compared to narrower tool holders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision-Milled SCMT 09T3 Pocket:\u003c\/strong\u003e Delivers precise insert seating with a tight tolerance boundary, ensuring zero pocket movement under heavy multi-pass stock removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75° Strategic Lead Angle:\u003c\/strong\u003e Optimizes force distribution to balance axial and radial push-back, allowing smoother transitions during internal step profiling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStreamlined Screw-Lock Clamping:\u003c\/strong\u003e Employs a low-profile Torx screw mechanism that eliminates bulky top clamps, maximizing chip evacuation space inside tight cylindrical bores.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e3. Technical Specifications \u0026amp; Metric\/Imperial Reference\u003c\/h2\u003e\n\u003cp\u003eAccurate parameter verification is vital for flawless CNC code execution. Below is the structural decoding of the \u003cstrong\u003eS25S-SSSCR09\u003c\/strong\u003e standard international ISO designation rules:\u003c\/p\u003e\n\u003cdiv class=\"beyond-grid-box\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #47479f; margin-bottom: 10px;\"\u003eISO Nomenclature Verification Structure:\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-breakdown\"\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003eSteel Shank\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003e25\u003c\/strong\u003e25mm Diameter\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e250mm Length\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003eScrew Lock System\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003eSquare Insert\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e75° Approach\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eC\u003c\/strong\u003e7° Clearance\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003eRight-Hand Direction\u003c\/div\u003e\n\u003cdiv class=\"beyond-code-letter\"\u003e\n\u003cstrong\u003e09\u003c\/strong\u003e9.525mm Edge Size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-table-wrapper\"\u003e\n\u003ctable class=\"beyond-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter Dimension\u003c\/th\u003e\n\u003cth\u003eMetric System Specification\u003c\/th\u003e\n\u003cth\u003eImperial Equivalent Measurement\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShank Diameter (d)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003ctd\u003e0.9842 inches (Fits standard 1\" turret blocks\/sleeves directly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Tool Length (L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 mm\u003c\/td\u003e\n\u003ctd\u003e9.8425 inches (Highly adaptive for deep internal pocket tracking)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Bore Diameter (D-min)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003ctd\u003e1.2598 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Carbide Insert Layout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSCMT 09T3xx \/ SCGT 09T3xx\u003c\/td\u003e\n\u003ctd\u003eSCMT 3(2.5)1 \/ SCMT 3(2.5)2 (3\/8\" IC Square Size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClamping Screw Model Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM3.5 x 9.0\u003c\/td\u003e\n\u003ctd\u003eM3.5 x 0.3543 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTorx Key Driver Wrench Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eT15\u003c\/td\u003e\n\u003ctd\u003eT15 Torx Wrench\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRecommended Technical Machining Parameters (Speed \u0026amp; Feed Guide)\u003c\/h3\u003e\n\u003cdiv class=\"beyond-table-wrapper\"\u003e\n\u003ctable class=\"beyond-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eWorkpiece Material Classification\u003c\/th\u003e\n\u003cth\u003eCutting Speed (Vc) Range\u003c\/th\u003e\n\u003cth\u003eFeed Rate (f) Per Revolution\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Steel \/ Alloy Steel (HB180-280)\u003c\/td\u003e\n\u003ctd\u003e140 - 240 m\/min (459 - 787 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.12 - 0.35 mm\/rev (0.0047 - 0.0137 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel Matrix (304, 316, 420)\u003c\/td\u003e\n\u003ctd\u003e90 - 160 m\/min (295 - 525 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.10 - 0.28 mm\/rev (0.0039 - 0.0110 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCast Iron Grades (GG25, GGG40)\u003c\/td\u003e\n\u003ctd\u003e110 - 200 m\/min (360 - 656 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.15 - 0.40 mm\/rev (0.0059 - 0.0157 IPR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-style: dashed; background-color: #f4f4fa; text-align: center; padding: 15px;\" class=\"beyond-grid-box\"\u003e🔗 Need matching high-performance turning inserts?\u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=SCMT09T3\" target=\"_blank\" rel=\"noopener\"\u003e \u003cspan style=\"color: #47479f;\"\u003e\u003cspan style=\"text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cb\u003e\u003cu\u003eClick here to shop BEYOND Original SCMT 09T3 Carbide Inserts\u003c\/u\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e \u003c\/a\u003ewith optimized chipbreaker configurations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e4. Product Application Scenarios\u003c\/h2\u003e\n\u003cp\u003eThe strategic combination of a dense 25mm steel shank with a highly clear 09-sized tool head pocket turns the S25S-SSSCR09 into a versatile workhorse:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium Bore Deep Hole Machining:\u003c\/strong\u003e Excellently handles internal cavity boring where entry spaces start at 32mm, maximizing rigid tool depth reach.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Internal Step Profiling:\u003c\/strong\u003e The 75° approach allows clean cutting of multi-stage internal diameters, relief grooves, and precise face boring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSemi-Finish to Light Roughing Cycles:\u003c\/strong\u003e Perfect for machining mechanical bushings, hydraulic pipe housings, and custom automotive transmission sleeves.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e5. Compatibility \u0026amp; Equipment Interface\u003c\/h2\u003e\n\u003cp\u003eThe ground 25mm cylindrical shank fits perfectly into standard metric CNC lathe turrets, VDI static tool holders, and specialized boring bar split sleeves. It is fully cross-compatible with 1-inch imperial tool slots through standard reduction bush adapters. It integrates flawlessly with global CNC machinery setups including Haas (ST-15\/20), Mazak Quick Turn, Doosan\/DN Solutions Lynx, Okuma, and manual lathe quick-change tool posts optimized for high-accuracy internal turning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e6. BEYOND Premium Substrate \u0026amp; Grade Selection Matrix\u003c\/h2\u003e\n\u003cp\u003ePair your S25S-SSSCR09 boring bar with the appropriate BEYOND insert grade to maximize tool life and master chip breakages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYM11 Grade (PVD Coated Substrate):\u003c\/strong\u003e Nano-layered TiAlN compound on a high-toughness edge. Exceptional at preventing built-up edges (BUE) on sticky 304\/316 stainless steels and heat-resistant superalloys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYM25 Grade (Premium CVD Dual-Coated):\u003c\/strong\u003e Features thick multi-layer Al2O3 + TiN coating lines. Fully optimized for high-velocity, continuous roughing passes on carbon and low-alloy structural steels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBYK15 Grade (Ultra-Dense Micro-Grain):\u003c\/strong\u003e Formulated for maximum abrasive wear resistance. The premium choice for high-speed internal turning on grey and ductile cast iron shells.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e7. Why Choose BEYOND Tooling Systems\u003c\/h2\u003e\n\u003cp\u003eAt BEYOND, we build for structural persistence. The S25S-SSSCR09 undergoes precision multi-stage induction hardening and computer-guided pocket milling. By maintaining strict ±0.01mm pocket seat boundaries, we eliminate insert micro-movements under intense tool pressure. This ensures predictable tool wear patterns, giving your CNC workshop maximum operational security and repeatable sizing across multi-shift batches.\u003c\/p\u003e\n\u003ch3 style=\"color: #47479f; margin-top: 20px;\"\u003eGlobal Machinist Field Reports:\u003c\/h3\u003e\n\u003cdiv class=\"beyond-review-container\"\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Outstanding rigid bar for 35mm bores\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eI replaced a thinner 20mm bar with this 25mm BEYOND bar, and the difference is massive. It uses the standard SCMT 09T3 inserts we always stock, but the heavy steel body completely wiped out our chatter issues in 4140 steel tubes. Excellent pocket quality.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Dave M., CNC Lead Programmer (United States)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Hervorragende Vibrationsdämpfung\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eSehr massive Ausführung. Der 25mm Schaft gibt maximale Stabilität beim Ausdrehen von zylindrischen Bohrungen. Die SCMT 09T3 Wendeplatten passen exakt rein. Die Bohrungsoberfläche ist makellos spiegelnd.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Hans B., Master Turner (Germany)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★☆\u003c\/div\u003e\n\u003cstrong\u003e\"Stelo robusto, vite ad alta resistenza\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eUtensile ben temprato con ottima finitura superficiale nera. La stabilità della barra da 25mm abbinata all'inserto 09 permette di lavorare in profondità senza flessioni. Consegna rapida.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Stefano L., Workshop Specialist (Italy)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"ビビリが消えて内径面が非常に綺麗になりました\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eSCMT 09T3チップが使える25mmシャンクを探していました。この剛性は素晴らしいです。突出し量を長めに設定しても突発的な高周波ビビリが全く発生せず、チップの4コーナーをフルに使い切れます。\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Takashi Y., Production Engineer (Japan)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-review-card\"\u003e\n\u003cdiv class=\"beyond-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Excellent pocket durability on tough steels\"\u003c\/strong\u003e\n\u003cp style=\"margin: 5px 0;\"\u003eWe run this bar setup daily on our CNC lathe. The black oxide finish stands up well against aggressive synthetic water coolants. The insert seat stays square and sharp even after accidental overloads.\u003c\/p\u003e\n\u003cdiv class=\"beyond-review-meta\"\u003e— Robert H., Manufacturing Manager (United Kingdom)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-section\"\u003e\n\u003ch2\u003e8. Frequently Asked Questions (AI \u0026amp; Search Engine Optimized)\u003c\/h2\u003e\n\u003cdiv class=\"beyond-faq-item\"\u003e\n\u003cdiv class=\"beyond-faq-q\"\u003eQ: Can I use SCMT 1204 inserts on the BEYOND S25S-SSSCR09 boring bar?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: No, you cannot. This specific tool holder is custom-milled exclusively to fit \u003cstrong\u003eSCMT 09T3xx\u003c\/strong\u003e or \u003cstrong\u003eSCGT 09T3xx\u003c\/strong\u003e inserts (9.525mm \/ 3\/8\" inscribed circle). If your job profile demands the larger 12mm edge size inserts, you must purchase our larger capacity S25S-SSSCR12 boring bar series instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-item\"\u003e\n\u003cdiv class=\"beyond-faq-q\"\u003eQ: What is the absolute minimum internal diameter entry for this boring bar?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: The minimum entry bore diameter (D-min) is \u003cstrong\u003e32mm (1.26 inches)\u003c\/strong\u003e. Even though the shank is 25mm, entering any bore smaller than 32mm will cause the back heel structure of the tool head to rub against the internal radius of your workpiece, leading to severe friction heat and insert breakage.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-item\"\u003e\n\u003cdiv class=\"beyond-faq-q\"\u003eQ: What is the recommended maximum overhang ratio for this solid steel tool bar?\u003c\/div\u003e\n\u003cdiv class=\"beyond-faq-a\"\u003eA: For premium solid steel boring bars like the S25S series, the ideal operating extension length is within \u003cstrong\u003e3 times the diameter (3xD)\u003c\/strong\u003e, which equals roughly 75mm of overhang. For depths extending up to 4xD, you can still run safely by slightly dropping your cutting speed (Vc) and feed per revolution (f).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"beyond-footer-panel\"\u003e\n\u003ch3\u003eGrade Comparison, Troubleshooting Tips \u0026amp; Material Suitability Matrix\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eEquivalent Models Reference Cross-Guide:\u003c\/strong\u003e In standard North American imperial tooling catalogs, this 25mm metric tool holder acts as a high-strength direct alternative for standard 1-inch diameter indexable boring bars carrying size 3-2.5 square inserts (commonly cataloged as standard S16S-SSSCR3 models in US machine shops).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTroubleshooting Internal Turning Errors:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eProblem - Persistent Surface Vibration Marks:\u003c\/em\u003e Verify that the tool nose center line aligns exactly with the spindle center height. A micro-deviation here dramatically alters cutting pressure. Also, ensure a minimum clamping length of 3xD to 4xD inside a high-precision split-sleeve block.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eProblem - Long Bird-Nesting Ribbon Chips:\u003c\/em\u003e The square SCMT 09T3 insert requires sufficient depth of cut (DOC) and feed force to engage its mechanical chipbreaker groove. Try increasing your feed rate (f) slightly or choosing a specialized sharp chip groove design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWorkpiece Material Suitability Matrix:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"beyond-badge-container\"\u003e\n\u003cdiv class=\"beyond-badge\"\u003eP - Carbon \u0026amp; Structural Alloy Steels (Fully Optimized Setup)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eM - Stainless Steel Alloys \u0026amp; Duplex (Highly Suitable Application)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eK - Cast and Ductile Irons (Excellent Wear Resistance)\u003c\/div\u003e\n\u003cdiv class=\"beyond-badge\"\u003eN - Non-Ferrous Alloys \u0026amp; Aluminum (Compatible with Ground\/Polished SCGT Inserts)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43618211791020,"sku":"S25S-SSSCR09","price":33.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S25S-SSSCR09_internal_turning_boring_bar_25mm_solid_steel_shank_for_SCMT09T304_indexable_carbide_inserts_CNC_lathe_machining.jpg?v=1780812025","url":"https:\/\/cnchome-beyond.com\/products\/beyond-s25s-ssscr09-boring-bar-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}