{"product_id":"kgml1212-1-5t12a-external-cnc-turning-holder","title":"BEYOND KGML1212-1.5T12A Spring Steel External Grooving and Parting Tool Holder | Metric 12mm Shank \/ Imperial 0.47\" for GMM1520 Inserts (Does Not Include Inserts)","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 KGML1212-1.5T12A Spring Steel External Grooving and Parting Tool Holder (Does Not Include Inserts)\u003c\/h1\u003e\n\u003cp style=\"margin: 10px 0 0 0; color: #e2e8f0; font-size: 15px; font-weight: 400;\"\u003eIndustrial-Grade Left-Hand Spring Steel External Grooving and Cut-Off Tooling for High-Precision CNC Lathe OD Operations\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⚠️ Component Setup Notice: All product illustrations and technical renderings displaying an indexable carbide insert are strictly for assembly demonstration. The matching GMM1520 carbide insert is NOT included with this tool holder.\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 KGML1212-1.5T12A is an elite heavy-duty external grooving and parting tool holder forged from high-elasticity 60Si2Mn spring steel. Engineered for precision external diameter (OD) grooving, cut-off, and parting applications using GMM1520 indexable carbide inserts within a robust 12mm rectangular shank design, it delivers exceptional vibration suppression, rigid clamping, and absolute dimensional stability across ISO P, M, and K workpiece categories.\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 external grooving tool holder provides maximum chatter resistance, superior elastic recovery, and structural rigidity for OD parting and cut-off operations using GMM1520 inserts?\"\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 16px; font-size: 14px;\"\u003eThe \u003cstrong\u003eBEYOND KGML1212-1.5T12A\u003c\/strong\u003e spring steel external grooving and parting tool holder (also searched as external grooving tool post, CNC parting holder, and spring steel cut-off bar) is engineered to resolve severe tool deflection and chatters in external diameter (OD) grooving, necking, and parting-off tasks. Forged from premium \u003cstrong\u003e60Si2Mn spring steel\u003c\/strong\u003e with an optimized body profile, the bar offers an elite elastic limit and high tensile damping capacity that absorbs harmonic vibrations during extended overhang machining. The precision-ground insert pocket and rigid clamping geometry guarantee a secure seat for \u003cstrong\u003eGMM1520 carbide inserts\u003c\/strong\u003e, optimizing chip flow and OD surface finish integrity.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 16px; color: #2d3748; margin-top: 20px; margin-bottom: 12px; font-weight: 600;\"\u003eISO Model Designation Breakdown\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;\"\u003eGrooving \u0026amp; Parting 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;\"\u003eG\u003c\/strong\u003e\u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eExternal Holder 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;\"\u003eM\u003c\/strong\u003e\u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eClamp System for Indexable Inserts\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;\"\u003eL\u003c\/strong\u003e\u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eLeft Hand Cutting Direction\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;\"\u003e1212\u003c\/strong\u003e\u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eShank Size (12x12mm)\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;\"\u003e-1.5\u003c\/strong\u003e\u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003e1.5mm Insert Width\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;\"\u003eT12A\u003c\/strong\u003e\u003cspan style=\"font-size: 10px; color: #4a5568;\"\u003eHolder Depth \u0026amp; Series Code\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; border-radius: 8px; padding: 20px; text-align: center; margin-top: 20px; background-color: #fafbfd;\"\u003e\n\u003cp style=\"margin: 0 0 12px 0; font-size: 14px; font-weight: 500; color: #2d3748;\"\u003eNeed alternative external grooving or parting tool holder sizes?\u003c\/p\u003e\n\u003cdiv style=\"display: inline-block; background-color: #47479f; border-radius: 6px; padding: 10px 20px;\"\u003e\u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=GMM1520\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cb\u003e[ View Complete BEYOND External Grooving Catalog ] →\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/div\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\u003eSpring Steel Vibration Dampening Body:\u003c\/strong\u003e Forged from high-elasticity 60Si2Mn spring steel, providing exceptional structural stiffness and natural harmonic damping to eliminate chatter during parting.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eRigid Clamping System:\u003c\/strong\u003e Engineered pocket design ensures absolute seat stability for GMM1520 grooving inserts, preventing micro-movement under high axial cutting forces.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eOptimized Blade Width Architecture:\u003c\/strong\u003e Engineered specifically for 1.5mm cut-off inserts to minimize material loss and reduce cutting resistance.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eHigh Fatigue Resistance:\u003c\/strong\u003e Resists continuous cyclic stress fatigue far better than ordinary structural steels, extending tool life in high-speed CNC operations.\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; text-align: left;\"\u003eTechnical Parameter\u003c\/th\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 Equivalent\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;\"\u003eShank Size (H x B)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e12 x 12 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e0.472\" x 0.472\" (~1\/2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eCompatible Insert Width\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e1.5 mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003e0.059\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eCompatible Insert Series\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eGMM1520\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eGMM1520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eTool Hand Orientation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eLeft Hand (L)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; border: 1px solid #E2E8F0;\"\u003eLeft Hand (L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"font-size: 15px; color: #2d3748; margin-top: 15px; margin-bottom: 10px;\"\u003eRecommended Cutting Parameters (GMM1520 Insert) - Dual-Column Reference\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; text-align: left;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #2d3748; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #CBD5E0; text-align: left;\"\u003eWorkpiece Material Group\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #CBD5E0; text-align: left;\"\u003eCutting Speed (Vc, m\/min)\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #CBD5E0; text-align: left;\"\u003eFeed Rate (f, 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 #E2E8F0;\"\u003eISO P (Carbon \u0026amp; Alloy Steel)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #E2E8F0;\"\u003e100 - 180 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #E2E8F0;\"\u003e0.04 - 0.12 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8fafc;\"\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #E2E8F0;\"\u003eISO M (Stainless Steel)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #E2E8F0;\"\u003e70 - 130 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #E2E8F0;\"\u003e0.03 - 0.09 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #E2E8F0;\"\u003eISO K (Cast Iron)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #E2E8F0;\"\u003e110 - 190 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #E2E8F0;\"\u003e0.05 - 0.14 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Section 4: Applications --\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. Product Applications\u003c\/h2\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; color: #4a5568; font-size: 14px;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eExternal Parting \u0026amp; Cut-Off Operations:\u003c\/strong\u003e Clean separation of finished components from bar stock with minimal kerf loss.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eExternal Grooving \u0026amp; Necking:\u003c\/strong\u003e Precision machining of snap-ring grooves, O-ring channels, and relief undercuts on external diameters.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eSmall Component Machining:\u003c\/strong\u003e Ideal for Swiss-type and small CNC lathe setups requiring rigid 12mm shank tooling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral CNC Lathe External Tooling:\u003c\/strong\u003e Versatile OD grooving across carbon steel, alloy steel, and stainless steel workpieces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Section 5: Compatibility --\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;\"\u003e5. Compatibility \u0026amp; Accessories\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 10px;\"\u003e\u003cstrong\u003eInsert Compatibility:\u003c\/strong\u003e Universal matching compliance with industry-standard \u003cstrong\u003eGMM1520\u003c\/strong\u003e 1.5mm carbide grooving and parting inserts.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 10px;\"\u003e\u003cstrong\u003eMachine Tooling Holders:\u003c\/strong\u003e Installs securely into standard 12mm lathe tool post turrets and external tool blocks.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; margin: 0;\"\u003e\u003cstrong\u003eClamping Hardware:\u003c\/strong\u003e Equipped with precision high-tensile clamping components designed to maintain secure insert retention under heavy parting loads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section 6: 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;\"\u003e6. Material Comparison: 60Si2Mn Spring Steel vs. Standard Carbon Steel\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 10px;\"\u003e\u003cstrong\u003eElastic Deflection Recovery:\u003c\/strong\u003e 60Si2Mn spring steel springs back precisely true to axis under radial parting loads, whereas standard carbon steel holders suffer permanent bending deflection and tool chatter.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; margin-bottom: 10px;\"\u003e\u003cstrong\u003eDamping Capacity:\u003c\/strong\u003e Features superior internal structural damping to suppress harmonic vibrations during deep cut-off operations.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; margin: 0;\"\u003e\u003cstrong\u003eFatigue Endurance:\u003c\/strong\u003e Resists continuous cyclic stress fatigue far better than ordinary structural steels, extending tool life in high-production machining.\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; box-shadow: 0 2px 4px rgba(0,0,0,0.05);\"\u003e\n\u003ch2 style=\"color: #ffffff; font-size: 20px; margin-top: 0; margin-bottom: 16px;\"\u003e7. Why Choose BEYOND Tooling?\u003c\/h2\u003e\n\u003cul style=\"margin: 0; padding-left: 20px; color: #f8fafc; font-size: 14px; line-height: 1.7;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO 5608 Manufacturing Standards:\u003c\/strong\u003e Certified production lines guarantee strict compliance with international mechanical properties and dimensional tolerances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Factory Economics:\u003c\/strong\u003e Premium metallurgical performance delivered directly from manufacturing lines without intermediate distributor markups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster Machinist Support:\u003c\/strong\u003e Comprehensive engineering support ready to assist with custom feed optimization, cutting speeds, and grade selection.\u003c\/li\u003e\n\u003c\/ul\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; border-bottom: 2px solid #47479F; padding-bottom: 8px;\"\u003e8. Frequently Asked Questions\u003c\/h2\u003e\n\u003cp style=\"color: #90cdf4; font-weight: 600; margin-bottom: 4px;\"\u003eQ: Does the BEYOND KGML1212-1.5T12A package include the cutting insert?\u003c\/p\u003e\n\u003cp style=\"font-size: 13px; margin-top: 0; margin-bottom: 14px; color: #e2e8f0;\"\u003eA: No. To allow maximum grade flexibility depending on your specific workpiece metallurgy and coating requirements, the GMM1520 insert is sold separately.\u003c\/p\u003e\n\u003cp style=\"color: #90cdf4; font-weight: 600; margin-bottom: 4px;\"\u003eQ: What insert width does this grooving tool holder support?\u003c\/p\u003e\n\u003cp style=\"font-size: 13px; margin-top: 0; margin-bottom: 14px; color: #e2e8f0;\"\u003eA: This tool holder is engineered specifically for 1.5mm wide grooving and parting inserts (GMM1520 series).\u003c\/p\u003e\n\u003cp style=\"color: #90cdf4; font-weight: 600; margin-bottom: 4px;\"\u003eQ: What is the recommended tool post centerline setting for this 12mm shank?\u003c\/p\u003e\n\u003cp style=\"font-size: 13px; margin-top: 0; margin-bottom: 0; color: #e2e8f0;\"\u003eA: Set the cutting edge precisely on the lathe center line (never below center) to prevent insert pinching and premature breakage during parting-off.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Footer Technical Notes \u0026 Tips --\u003e\n\u003cdiv style=\"font-size: 12px; color: #718096; border-top: 1px solid #E2E8F0; padding-top: 16px;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0;\"\u003e\u003cstrong\u003eGrade Comparison:\u003c\/strong\u003e PVD Coatings (TiAlN) are recommended for ISO M stainless applications; CVD Coatings (TiCN\/Al2O3) are optimized for ISO P carbon steels.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 8px 0;\"\u003e\u003cstrong\u003eEquivalent Models:\u003c\/strong\u003e Fully cross-compatible with universal modular external grooving and parting frameworks conforming to standard ISO architecture.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 8px 0;\"\u003e\u003cstrong\u003eTroubleshooting:\u003c\/strong\u003e Parting insert chipping or tool breakage usually stems from incorrect center height or excessive feed as the tool approaches center; reduce feed rate near the component core.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 8px 0;\"\u003e\u003cstrong\u003eWorkpiece Material Matrix:\u003c\/strong\u003e Fully performance-optimized for ISO P, ISO M, and ISO K industrial material classifications.\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eAuthoritative Endorsement:\u003c\/strong\u003e Structural design parameters benchmarked against \u003cstrong\u003eISO 5608 Tool Holder Standards\u003c\/strong\u003e and certified 60Si2Mn metallurgical specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"OYYU\/BEYOND","offers":[{"title":"Default Title","offer_id":40767865028780,"sku":"KGML1212-1.5T12A","price":19.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_KGML1212-1.5T12A_spring_steel_external_grooving_and_parting_tool_holder_profile_view.jpg?v=1787628779","url":"https:\/\/cnchome-beyond.com\/products\/kgml1212-1-5t12a-external-cnc-turning-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}