{"product_id":"beyond-mfh420r12-25-140a-internal-turning-tool-holder","title":"BEYOND MFH420R12-25\/140A Spring Steel Internal Grooving Tool Holder – 25mm Shank for MGMN400 Carbide 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 MFH420R12-25\/140A Spring Steel Internal Grooving Tool Holder\u003c\/h1\u003e\n\u003cp style=\"margin: 10px 0 0; color: #ffffff; opacity: 0.95; font-size: 16px;\"\u003ePrecision Industrial CNC Internal Grooving Solution for MGMN400\u003c\/p\u003e\n\u003cp style=\"margin: 8px 0 0; color: #ffeb3b; font-size: 13px; font-weight: bold;\"\u003e* Note: Carbide 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 grooving tool holder delivers maximum vibration suppression and structural rigidity for MGMN400 series applications?\"\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 14px;\"\u003eThe \u003cstrong\u003eBEYOND MFH420R12-25\/140A\u003c\/strong\u003e is an industrial-grade, right-hand internal grooving tool holder designed for high-precision CNC turning centers. Manufactured from high-tensile spring steel, this 25mm shank tool is specifically engineered to mitigate chatter and harmonic deflection in deep-bore internal grooving and recessing. The optimized clamping pocket provides secure, repeatable positioning for \u003cstrong\u003eMGMN400\u003c\/strong\u003e indexable carbide inserts, ensuring superior chip control and surface finish.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 16px; color: #1a202c; margin-top: 20px; margin-bottom: 12px;\"\u003eModel Decoding\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;\"\u003eMFH\u003c\/strong\u003e\u003csmall style=\"display: block; font-size: 11px; color: #4a5568;\"\u003eSeries\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;\"\u003e420\u003c\/strong\u003e\u003csmall style=\"display: block; font-size: 11px; color: #4a5568;\"\u003eWork Size\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=\"display: block; font-size: 11px; color: #4a5568;\"\u003eRight\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;\"\u003e12\u003c\/strong\u003e\u003csmall style=\"display: block; font-size: 11px; color: #4a5568;\"\u003eDepth\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=\"display: block; font-size: 11px; color: #4a5568;\"\u003eShank\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;\"\u003e140A\u003c\/strong\u003e\u003csmall style=\"display: block; font-size: 11px; color: #4a5568;\"\u003eLength\u003c\/small\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 12px; background: #fff8e1; padding: 10px; border-radius: 4px; border: 1px solid #ffe082;\"\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #856404;\"\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed exclusively for \u003cstrong\u003eMGMN400\u003c\/strong\u003e series carbide inserts.\u003c\/p\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\u003eSpring Steel Construction:\u003c\/strong\u003e Offers high damping capacity, effectively suppressing chatter during deep internal grooving cycles.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eHigh-Precision Clamping:\u003c\/strong\u003e Engineered for superior stability and insert indexing repeatability, critical for tight-tolerance CNC work.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eGeometry Optimization:\u003c\/strong\u003e Developed to ensure efficient chip flow, reducing cycle times and preventing chip re-cutting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- 3. 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 Data\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 Specification\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #cbd5e0; text-align: left;\"\u003eImperial Approximation\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;\"\u003eModel: \u003cstrong\u003eMFH420R12-25\/140A\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eShank: 1.0\" Class\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;\"\u003e~0.984 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;\"\u003eStarting 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;\"\u003eMaterial Group\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #cbd5e0;\"\u003eVc (m\/min)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #cbd5e0;\"\u003eFeed Rate (mm\/rev)\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;\"\u003eSteel (P)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e120 - 200\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e0.08 - 0.18\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 (M)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e80 - 150\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003e0.06 - 0.15\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;\"\u003eBrowse Professional Tool Holders\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=MGMN400\" 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 Full Catalog] →\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 4. Applications \u0026 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;\"\u003e4. Applications \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e Designed for internal turning, deep grooving, and boring applications in high-volume automotive, aerospace, and general CNC manufacturing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard 25mm bore tool turrets; fully compatible with MGMN400 series carbide grooving inserts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- 6. Troubleshooting \u0026 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. Troubleshooting \u0026amp; Material Matrix\u003c\/h2\u003e\n\u003cp style=\"font-size: 13px; color: #4a5568;\"\u003e\u003cstrong\u003eTroubleshooting:\u003c\/strong\u003e Excessive chatter usually indicates incorrect tool overhang or center height. Ensure insert clearance angle is sufficient for the diameter.\u003c\/p\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;\"\u003eWorkpiece Material\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eRecommended Strategy\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;\"\u003eSteel Alloys\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003eCVD Coated for Wear Resistance\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\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #cbd5e0;\"\u003ePVD Coated for Toughness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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\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-Compliant\u003c\/strong\u003e\u003cbr\u003e\u003csmall style=\"color: #4a5568;\"\u003eStandardized excellence.\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;\"\u003eIndustrial Grade\u003c\/strong\u003e\u003cbr\u003e\u003csmall style=\"color: #4a5568;\"\u003eBuilt for longevity.\u003c\/small\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- 8. FAQ --\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\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this holder come with MGMN400 inserts?\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #cbd5e0;\"\u003eA: No, the tool holder is supplied as a standalone component to allow for specific insert grade selection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the 'A' designation?\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: #cbd5e0;\"\u003eA: The 'A' signifies enhanced internal cooling\/structural refinements for high-performance CNC environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Authority --\u003e\n\u003cdiv style=\"margin-top: 24px; font-size: 11px; color: #718096; text-align: center; border-top: 1px solid #e2e8f0; padding-top: 16px;\"\u003eEndorsed by industry machining standards. Metallurgical specifications adhere to ISO 5608 requirements. Performance data derived from BEYOND internal quality validation.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"OYYU\/BEYOND","offers":[{"title":"Default Title","offer_id":43669065728172,"sku":"MFH420R12-25\/140A","price":45.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_MFH420R12-25_140A_internal_grooving_tool_holder_side_profile.jpg?v=1787132418","url":"https:\/\/cnchome-beyond.com\/products\/beyond-mfh420r12-25-140a-internal-turning-tool-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}