{"product_id":"beyond-kgmr1212-1-5t12a-external-turning-tool-holder","title":"BEYOND KGMR1212-1.5T12A Spring Steel External Grooving \u0026 Parting Tool Holder – 12x12mm Shank, 1.5mm Groove Width for GMM1520 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 KGMR1212-1.5T12A 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 GMM1520 Inserts (12x12mm 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 KGMR1212-1.5T12A is a precision external grooving and parting tool holder built from high-strength 60Si2Mn spring steel. Engineered specifically for GMM1520 indexable carbide inserts, it offers exceptional vibration control and dimensional stability for fine CNC lathe machining applications.\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 compact tool holder and chipbreaker setup provides the highest stability for narrow grooving and parting with GMM1520 inserts on smaller CNC lathes?\"\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px; font-size: 14px;\"\u003eThe \u003cstrong\u003eBEYOND KGMR1212-1.5T12A\u003c\/strong\u003e is designed for high-precision micro-machining environments where tool deflection must be strictly minimized. Forged from premium 60Si2Mn spring steel, this holder absorbs high-frequency harmonic vibrations to protect delicate cutting edges. When paired with GMM1520 carbide inserts featuring specialized chip-forming geometry, it ensures smooth evacuation and tight surface finishes across alloy steels and non-ferrous metals.\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;\"\u003e1212\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: 45px; background-color: #f8fafc;\"\u003e\n\u003cstrong style=\"color: #47479f; display: block; font-size: 13px;\"\u003e1.5\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;\"\u003eT12A\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 tool holder dimensions or matching inserts?\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=GMM1520\" 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[ Explore BEYOND Tool Holder Series 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 Structure:\u003c\/strong\u003e Provides high elasticity limit and impact resilience to prevent micro-fracturing under narrow cut profiles.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eSecure Insert Seat:\u003c\/strong\u003e Engineered pocket locks GMM1520 inserts securely, eliminating micromovement during deep feed cycles.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eChatter Suppression:\u003c\/strong\u003e Special mechanical damping characteristics suppress vibration during high-speed turning operations.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eISO Compliance:\u003c\/strong\u003e Built precisely to international standards for effortless integration into compact CNC tool turrets.\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: 12mm x 12mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eApprox. 0.47\" x 0.47\" (1\/2\" 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: 1.5mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eApprox. 0.059\" 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;\"\u003e100 - 180\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e0.03 - 0.08\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;\"\u003e80 - 130\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e0.02 - 0.06\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 Micro external grooving, small component parting, and precise necking operations on CNC lathes.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Perfectly matches GMM1520 indexable carbide inserts and standard 12x12mm tool blocks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Comparison:\u003c\/strong\u003e Spring steel (60Si2Mn) outperforms traditional structural carbon steel (such as AISI 1045) by offering superior elasticity retention, preventing permanent deformation under constant thermal and mechanical stress.\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;\"\u003eEngineered for high-precision 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;\"\u003eStrict ISO Standards\u003c\/strong\u003e \u003cspan style=\"font-size: 12px; color: #e2e8f0;\"\u003eRigorous testing for reliable tool indexing.\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 GMM1520 carbide inserts included with the tool holder?\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 acquired 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: Why is spring steel preferred for narrow grooving holders?\u003c\/p\u003e\n\u003cp style=\"margin: 4px 0 0 0; font-size: 13px;\"\u003eA: Spring steel absorbs dynamic cutting shock, minimizing tool chatter in narrow groove applications.\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: Does this fit standard 12x12mm compact lathe tool turrets?\u003c\/p\u003e\n\u003cp style=\"margin: 4px 0 0 0; font-size: 13px;\"\u003eA: Yes, it is fully compliant with standard metric 12x12mm square shank pocket 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 Benchmarked against ISO 5608 requirements for structural rigidity and clamping torque tolerance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquivalent Models:\u003c\/strong\u003e Interchangeable with global standard 12x12 external micro-grooving tooling systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorkpiece Material Matrix:\u003c\/strong\u003e Ideal for ISO P (Steel) and ISO M (Stainless Steel) precision turning operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTroubleshooting Tip:\u003c\/strong\u003e Verify proper tool tip center height alignment to prevent edge chipping and premature flank wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthoritative Endorsement:\u003c\/strong\u003e Validated through industrial metalworking evaluation protocols for vibration suppression in high-tolerance turning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"OYYU\/BEYOND","offers":[{"title":"Default Title","offer_id":43659923161260,"sku":"KGMR1212-1.5T12A","price":19.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_KGMR1212-1.5T12A_external_grooving_tool_holder_side_profile.jpg?v=1787213079","url":"https:\/\/cnchome-beyond.com\/products\/beyond-kgmr1212-1-5t12a-external-turning-tool-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}