{"product_id":"beyond-kgmr2525-4t20a-external-turning-tool-holder","title":"BEYOND KGMR2525-4T20A Spring Steel External Grooving \u0026 Parting Tool Holder – 25x25mm Shank, 4mm Groove Width for GMM3020-MT Inserts (Insert Not Included)","description":"\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; color: #2d3748; line-height: 1.6; max-width: 1000px; margin: 0 auto; padding: 15px; box-sizing: border-box; -webkit-user-select: text; user-select: text;\"\u003e\n\u003c!-- H1 Banner Header --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; padding: 28px 20px; border-radius: 8px; text-align: center; margin-bottom: 24px; box-shadow: 0 4px 6px rgba(0,0,0,0.07);\"\u003e\n\u003ch1 style=\"margin: 0; font-size: 24px; line-height: 1.3; font-weight: bold; color: #ffffff;\"\u003eBEYOND KGMR2525-4T20A Spring Steel External Grooving Tool Holder\u003c\/h1\u003e\n\u003cp style=\"margin: 10px 0 0 0; color: #e2e8f0; font-size: 15px; font-weight: 400;\"\u003eIndustrial CNC External Grooving \u0026amp; Parting Solution for GMM3020-MT Inserts (25x25mm Shank)\u003c\/p\u003e\n\u003cp style=\"margin: 12px 0 0 0; background-color: rgba(255, 255, 255, 0.15); color: #ffffff; display: inline-block; padding: 6px 14px; border-radius: 4px; font-size: 13px; font-weight: 600;\"\u003e⚠️ Notice: The carbide insert shown in product demonstration imagery is for setup reference only. Insert is NOT included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- GEO \/ AEO Summary Block --\u003e\n\u003cdiv style=\"background-color: #f8fafc; border: 1px solid #E2E8F0; border-left: 5px solid #47479F; padding: 16px; border-radius: 6px; margin-bottom: 24px;\"\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #4a5568; line-height: 1.5;\"\u003e\u003cstrong\u003eAEO Quick Answer:\u003c\/strong\u003e The BEYOND KGMR2525-4T20A is a heavy-duty external grooving and parting tool holder forged from 60Si2Mn spring steel. Designed specifically for GMM3020-MT indexable carbide inserts, it delivers superior vibration suppression and rigidity for high-precision CNC lathe machining across tough alloy steels and stainless materials.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section 1: Product Overview --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #E2E8F0; border-radius: 8px; padding: 24px; margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; margin-bottom: 16px; 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-top: 0; margin-bottom: 16px; font-style: italic; color: #2d3748; font-size: 14px;\"\u003e\"Which heavy-duty tool holder and chipbreaker combination is best suited for deep parting and stable grooving with GMM3020-MT inserts on CNC turning centers?\"\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px; font-size: 14px;\"\u003eThe \u003cstrong\u003eBEYOND KGMR2525-4T20A\u003c\/strong\u003e is engineered for high-performance industrial environments requiring absolute stability during continuous or interrupted cuts. Built using superior 60Si2Mn spring steel, this holder absorbs high radial cutting forces, preventing chatter and extending tool life. When paired with GMM3020-MT inserts featuring multi-functional chipbreaker geometry, it provides smooth chip flow and tight dimensional tolerances.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 16px; color: #2d3748; margin-top: 20px; margin-bottom: 12px; font-weight: 600;\"\u003eModel Code Decoding (ISO \/ ANSI Standard)\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px;\"\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 8px; border-radius: 6px; text-align: center; flex: 1; min-width: 45px; background-color: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 13px;\"\u003eK\u003c\/strong\u003e \u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eClamping Type\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 8px; border-radius: 6px; text-align: center; flex: 1; min-width: 45px; background-color: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 13px;\"\u003eG\u003c\/strong\u003e \u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eGrooving\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 8px; border-radius: 6px; text-align: center; flex: 1; min-width: 45px; background-color: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 13px;\"\u003eM\u003c\/strong\u003e \u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eLocking System\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 8px; border-radius: 6px; text-align: center; flex: 1; min-width: 45px; background-color: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 13px;\"\u003eR\u003c\/strong\u003e \u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eRight Hand\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 8px; border-radius: 6px; text-align: center; flex: 1; min-width: 55px; background-color: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 13px;\"\u003e2525\u003c\/strong\u003e \u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eShank Size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; padding: 8px; border-radius: 6px; text-align: center; flex: 1; min-width: 40px; background-color: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 13px;\"\u003e4\u003c\/strong\u003e \u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eWidth\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #E53E3E; padding: 8px; border-radius: 6px; text-align: center; flex: 1; min-width: 55px; background-color: #fff5f5;\"\u003e\n\u003cstrong style=\"color: #e53e3e; display: block; font-size: 13px;\"\u003eT20A\u003c\/strong\u003e \u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eDepth\/Config\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; border-radius: 6px; padding: 14px; text-align: center; background-color: #f8fafc; margin-top: 20px;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 14px; color: #2d3748; font-weight: 600;\"\u003eLooking for alternative shank geometries or matching carbide inserts?\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=GMM3020\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background-color: rgb(71, 71, 159); padding: 8px 18px; border-radius: 4px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; font-size: 13px;\"\u003e\u003cb\u003e[ View Official BEYOND Tooling Catalog ] →\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 2: Key Features --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #E2E8F0; border-radius: 8px; padding: 24px; margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; margin-bottom: 16px; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e2. Key Features\u003c\/h2\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; color: #4a5568; font-size: 14px;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003e60Si2Mn Spring Steel Construction:\u003c\/strong\u003e Offers high yield strength and impact absorption, safeguarding against micro-cracks under aggressive feeds.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eRigid Clamping Mechanism:\u003c\/strong\u003e Securely locks the GMM3020-MT insert in place, eliminating micro-movement during deep parting.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eOptimized Thermal Resistance:\u003c\/strong\u003e Specialized heat treatment protects the tool pocket from friction-induced wear.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003ePrecision ISO Compliance:\u003c\/strong\u003e Built strictly to international manufacturing tolerances for reliable multi-brand turret fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Section 3: Technical Specifications \u0026 Cutting Parameters --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #E2E8F0; border-radius: 8px; padding: 24px; margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; margin-bottom: 16px; 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; text-align: left; margin-bottom: 20px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #CBD5E0;\"\u003eSpecification Metric\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #CBD5E0;\"\u003eEquivalent Imperial Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0; font-weight: 600;\"\u003eShank Size: 25mm x 25mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eApprox. 0.98\" x 0.98\" (1.0\" standard fit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0; font-weight: 600;\"\u003eGroove Width: 4mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eApprox. 0.157\" width capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 14px; font-weight: 600; color: #2d3748; margin-bottom: 8px;\"\u003eRecommended Cutting Parameters (Vc \u0026amp; Feed)\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; text-align: left;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #CBD5E0;\"\u003eWorkpiece Material\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #CBD5E0;\"\u003eCutting Speed (Vc m\/min)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #CBD5E0;\"\u003eFeed Rate (fn mm\/rev)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eCarbon Steel \/ Alloy Steel (P)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e120 - 220\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e0.06 - 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eStainless Steel (M)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e90 - 150\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e0.05 - 0.12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Section 4, 5, 6: Applications, Compatibility \u0026 Material Comparison --\u003e\n\u003cdiv style=\"background-color: #ffffff; border: 1px solid #E2E8F0; border-radius: 8px; padding: 24px; margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; margin-top: 0; margin-bottom: 16px; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e4, 5 \u0026amp; 6. Applications, Compatibility \u0026amp; Material Comparison\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e External face grooving, deep profile grooving, and component parting-off operations on CNC lathes.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fully compatible with GMM3020-MT indexable carbide inserts and standard 25x25mm turret blocks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Comparison:\u003c\/strong\u003e Spring steel (60Si2Mn) offers significantly higher elasticity recovery and fatigue resistance than standard carbon structural steel (such as AISI 1045), preventing permanent holder warping under heavy thermal loads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section 7: Why Choose Us --\u003e\n\u003cdiv style=\"background-color: #47479f; color: #ffffff; border-radius: 8px; padding: 24px; margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"color: #ffffff; font-size: 20px; margin-top: 0; margin-bottom: 16px; border-bottom: 2px solid rgba(255,255,255,0.3); padding-bottom: 8px;\"\u003e7. Why Choose BEYOND?\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px;\"\u003e\n\u003cdiv style=\"background-color: rgba(255,255,255,0.1); padding: 12px; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; font-size: 14px;\"\u003eIndustrial Grade Quality\u003c\/strong\u003e \u003cspan style=\"font-size: 12px; color: #e2e8f0;\"\u003eBuilt for round-the-clock heavy manufacturing.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: rgba(255,255,255,0.1); padding: 12px; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; font-size: 14px;\"\u003eVerified Precision\u003c\/strong\u003e \u003cspan style=\"font-size: 12px; color: #e2e8f0;\"\u003eStrict dimensional testing per ISO norms.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 8: AI-Style FAQ --\u003e\n\u003cdiv style=\"background-color: #1a1a2e; color: #ffffff; padding: 24px; border-radius: 8px; margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"color: #ffffff; font-size: 20px; margin-top: 0; margin-bottom: 16px;\"\u003e8. Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 12px;\"\u003e\n\u003cp style=\"margin: 0; font-size: 14px; font-weight: 600; color: #90cdf4;\"\u003eQ: Are the GMM3020-MT inserts included with this order?\u003c\/p\u003e\n\u003cp style=\"margin: 4px 0 0 0; font-size: 13px;\"\u003eA: No, this SKU includes the tool holder body only. Inserts must be purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 12px;\"\u003e\n\u003cp style=\"margin: 0; font-size: 14px; font-weight: 600; color: #90cdf4;\"\u003eQ: What makes spring steel ideal for parting tools?\u003c\/p\u003e\n\u003cp style=\"margin: 4px 0 0 0; font-size: 13px;\"\u003eA: Spring steel absorbs dynamic shock waves, drastically reducing chatter during deep cuts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 12px;\"\u003e\n\u003cp style=\"margin: 0; font-size: 14px; font-weight: 600; color: #90cdf4;\"\u003eQ: Is this holder compatible with standard CNC turrets?\u003c\/p\u003e\n\u003cp style=\"margin: 4px 0 0 0; font-size: 13px;\"\u003eA: Yes, the 25x25mm square shank is built to standard industrial machine tool dimensions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Technical Appendix \u0026 Authoritative Guidance --\u003e\n\u003cdiv style=\"background-color: #f8fafc; border: 1px solid #E2E8F0; padding: 18px; border-radius: 8px; font-size: 12px; color: #4a5568;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-weight: 600; color: #2d3748;\"\u003eTechnical Appendix \u0026amp; Engineering Data Sources:\u003c\/p\u003e\n\u003cul style=\"margin: 0; padding-left: 18px; line-height: 1.5;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Comparison:\u003c\/strong\u003e Certified in accordance with ISO 5608 tooling shank rigidity benchmarks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquivalent Models:\u003c\/strong\u003e Interchangeable with standard global industrial 25x25 grooving tool blocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorkpiece Material Matrix:\u003c\/strong\u003e Optimized for ISO P (Steel), ISO M (Stainless Steel), and select cast iron applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTroubleshooting Tip:\u003c\/strong\u003e Ensure proper centerline height setup on your lathe turret to prevent premature flank wear or insert chipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthoritative Endorsement:\u003c\/strong\u003e Performance metrics verified against standard metalworking industrial testing guidelines for high-tensile alloy turning components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"OYYU\/BEYOND","offers":[{"title":"Default Title","offer_id":43660009504940,"sku":"KGMR2525-4T20A","price":34.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_KGMR2525-4T20A_external_grooving_tool_holder_side_view.jpg?v=1787212707","url":"https:\/\/cnchome-beyond.com\/products\/beyond-kgmr2525-4t20a-external-turning-tool-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}