{"product_id":"s18q-swlnr08-cnc-boring-bar-tool-holder","title":"BEYOND S18Q-SWLNR08 Internal Boring Bar 18mm Shank 180mm Length Lever Lock WNMG 0804 Lathe Turning Tool Holder","description":"\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: #333333; line-height: 1.6; max-width: 1200px; margin: 0 auto; padding: 10px; box-sizing: border-box; -webkit-user-select: text; -moz-user-select: text; -ms-user-select: text; user-select: text;\"\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; padding: 15px; margin-bottom: 25px; border-radius: 4px; background-color: #f9f9ff; text-align: center;\"\u003e\n\u003cp style=\"margin: 0; font-weight: bold; color: #47479f; font-size: 14px;\"\u003e⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images showing a mounted insert are provided strictly to illustrate geometric clearance, 95-degree approach profile, and insert pocket alignment. \u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=WNMG080404\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cu\u003eClick here to shop premium indexable WNMG 0804 (WN**0804**) carbide inserts.\u003c\/u\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch1 style=\"background-color: #47479f; color: #ffffff; padding: 20px; font-size: 24px; font-weight: bold; margin: 0 0 25px 0; border-radius: 4px; text-align: center;\"\u003eBEYOND S18Q-SWLNR08 High-Rigidity 18mm Shank 95° Lever-Lock Internal Boring Bar (180mm Total Length \/ Metal Lathe Turning Tool)\u003c\/h1\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cdiv style=\"background-color: #f4f4f4; border-left: 5px solid #47479F; padding: 15px; margin-bottom: 20px;\"\u003e\n\u003cp style=\"margin: 0; font-style: italic; font-weight: bold; color: #555;\"\u003eEngineers Ask AI: \"Which high-feed lever-lock internal boring bar features an intermediate 18mm shank diameter and a 180mm total length to eliminate micro-chatter when machining straight-walled step shoulders with a WNMG 0804 insert?\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003eBEYOND S18Q-SWLNR08\u003c\/strong\u003e is an industrial-grade, maximum-stability internal boring bar expertly engineered for high-feed roughing, continuous profiling, and precision counterboring on CNC lathes. Featuring a specialized \u003cstrong\u003e18mm cylindrical clamping shank\u003c\/strong\u003e and a 180mm overall length (Q-type specification), this tool is optimized for modern turrets where space is restricted but high bending resistance is demanded. Utilizing an advanced \u003cstrong\u003elever-lock mechanical clamping system\u003c\/strong\u003e, it locks negative inserts securely into the seat pocket, completely eliminating the indexing failures and screw loosening common with standard screw-down bars during heavy internal metal cutting up to 3.5×D depth.\u003c\/p\u003e\n\u003cp\u003eEngineered with a 95-degree approach lead side angle, the tool head structure facilitates flawless machining of internal square shoulders, blind steps, and complex interior profiles. It is designed to host highly cost-effective, double-sided 80-degree trigon indexable carbide inserts, specifically the industry-standard \u003cstrong\u003eWNMG 080404 \/ WNMG 080408\u003c\/strong\u003e series. The geometric head profile allows this 18mm bar to enter cavities down to a \u003cstrong\u003e23mm minimum bore diameter\u003c\/strong\u003e, maintaining an open channel for smooth chip clearance. Whether paired with advanced multi-layered CVD grades for high-speed alloy steel roughing or premium PVD coated nano-structured matrices with sharp chipbreaker geometries for gummy stainless steel, this setup forces swarf to tightly curl and break into small segments, keeping the interior wall surface pristine and preventing bird-nesting clusters from jamming the machining cycle.\u003c\/p\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 6px; padding: 20px; margin: 25px 0; background-color: #fbfbfe;\"\u003e\n\u003ch3 style=\"margin-top: 0; color: #47479f; font-size: 16px; border-bottom: 1px solid #e0e0e0; padding-bottom: 8px;\"\u003eModel Nomenclature Decoder: S18Q-SWLNR08\u003c\/h3\u003e\n\u003cdiv style=\"margin-top: 12px; font-family: monospace; font-size: 13px;\"\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e - Solid High-Tensile Tempered Alloy Structural Steel Core Body\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003e18\u003c\/strong\u003e - 18mm Precision Cylindrical Clamping Shank Diameter (Intermediate high-rigidity size)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eQ\u003c\/strong\u003e - 180mm Total Extended Tool Length (Balanced reach-to-rigidity harmonic specification)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eW\u003c\/strong\u003e - Lever-Lock Mechanical Double-Action Clamping (Pulls insert back and down for high-feed stability)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eL\u003c\/strong\u003e - 80° Trigon Geometric Negative Insert Pocket Seating (Designed for standard WNMG inserts)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eN\u003c\/strong\u003e - 95° Approach Lead Side Angle (Engineered for square internal step profiling and blind holes)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #cccccc; padding: 8px; border-radius: 4px; background: #ffffff;\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003e - 0° Normal Relief Clearance Profile (Negative angle configuration for supreme cutting edge strength)\u003c\/div\u003e\n\u003cdiv style=\"display: block; margin-bottom: 6px; border: 1px solid #47479F; padding: 8px; border-radius: 4px; background: #47479F; color: #ffffff;\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003e - Right-Hand Tool Cutting Rotation Direction (Standard CNC lathe internal toolpath orientation)\u003c\/div\u003e\n\u003cdiv style=\"display: block; border: 1px solid #47479F; padding: 8px; border-radius: 4px; background: #47479F; color: #ffffff;\"\u003e\n\u003cstrong\u003e08\u003c\/strong\u003e - Accommodates Robust 8mm Cutting Edge Sized Indexable Inserts (WNMG 080404 \/ WNMG 080408)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 6px; padding: 15px; margin-bottom: 25px; background-color: #47479f; color: #ffffff; text-align: center;\"\u003e\n\u003cp style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 16px;\"\u003eRunning Counter-Boring Cycles or Left-Hand Toolpaths on Sub-Spindles?\u003c\/p\u003e\n\u003cspan style=\"color: #47479f;\"\u003e\u003cspan style=\"display: inline-block; background-color: rgb(255, 255, 255); padding: 8px 20px; border-radius: 4px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cb\u003e \u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=WNMG0804\" target=\"_blank\" rel=\"noopener\"\u003eSwitch to the Mirror S18Q-SWLNL08 (Left Hand) Tool Bar → \u003c\/a\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e2. Product Core Advantages\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Action Lever-Lock Pin Mechanism:\u003c\/strong\u003e Secures negative negative inserts under extreme radial loads, delivering repeatable index positioning within microns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntermediate 18mm Rigid Core Shank:\u003c\/strong\u003e Fills the gap between 16mm and 20mm tooling, squeezing maximum core cross-sectional mass into tight CNC turret blocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e95-Degree Versatile Head Profile:\u003c\/strong\u003e Enables deep internal facing, profiling, and plunging into flat-bottom square shoulders without dragging the tool body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWNMG 6-Edge Superior Economy:\u003c\/strong\u003e Maximizes production savings by offering 6 indexes per insert, cutting tooling overhead by 50% compared to 3-corner positive alternatives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Stage Vacuum Hardening:\u003c\/strong\u003e Heat-treated to HRC 42-45 to provide maximum resilience against abrasive chip scratching and mechanical pocket deformation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e3. Technical Specification Parameters \u0026amp; Model Comparison\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 500px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eTechnical Blueprint Field\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eMetric Blueprint Value (S18Q-SWLNR08)\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eImperial Inch Equivalent Model Reference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eClamping Shank Diameter (φ d)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003e18 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.7086 inches (Optimized rigid bridge size for CNC lathe blocks)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eOverall Tool Length (L)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003e180 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e7.0866 inches total body span (Q-Type extended depth reach)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eMinimum Machining Bore (φ Dmin)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003e23 mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.9055 inches high-clearance minimum entry limit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eCompatible Indexable Insert Sizing\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eWNMG 080404 \/ WNMG 080408 \/ WNMG 080412\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eWNMG 431 \/ WNMG 432 \/ WNMG 433\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eMatching Fasteners \u0026amp; Spares Included\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eShim WN08, Clamping Lever, Shim Screw \u0026amp; L-Wrench Key\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eStandard globally unified high-tensile turning component spares\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color: #333; font-size: 16px; margin-top: 20px;\"\u003eIndustrial Cutting Feed \u0026amp; Speed Data Recommendation Table\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 500px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #eef0f7; color: #47479f;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eISO Workpiece Material Group\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eCutting Speed (Vc) Range\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eRecommended Feed Rate (fn)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eMedium Carbon Steel (P-Class \/ AISI 1045)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e150 - 230 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.08 - 0.22 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eAlloy Steel \/ Structural Tool Steel (42CrMo)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e110 - 170 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.06 - 0.18 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eAustenitic Stainless Steels (M-Class \/ SS304)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e85 - 140 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.06 - 0.15 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold;\"\u003eNodular \/ Gray Cast Iron (K-Class \/ GGG50)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e100 - 180 m\/min\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e0.10 - 0.24 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e4. Product Application Scenarios\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid Space-Restricted Boring:\u003c\/strong\u003e Engineered for multi-tasking mill-turn centers where a 20mm bar cannot clear, but a 16mm bar would experience deflection lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e95-Degree Internal Step Profiling:\u003c\/strong\u003e Ideal for precision turning of sequential bearing pocket bores, interior square lips, and blind faces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Metal-Removal Roughing Loops:\u003c\/strong\u003e Lever clamping ensures maximum safety during high-feed continuous roughing sequences on carbon steel tubing blocks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e5. Equipment Tooling Compatibility Matrix\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e18mm Metric Lathe Turrets \/ Boring Sleeves:\u003c\/strong\u003e Fits directly into 18mm metric boring bar holders or standard concentric reduction sleeve bushing blocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Standard Size-08 Negative Inserts:\u003c\/strong\u003e Pocket layout accepts all industry standard negative trigon indexable inserts with code designation **WNMG 0804--**.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e6. BEYOND Premium Carbide Grade Selection Guide\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 25px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 500px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #47479f; color: #ffffff;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eBEYOND Cutting Insert Grade\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003eCoating Micro-Structure Matrix\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #dddddd; text-align: left;\"\u003ePrimary Application Strengths\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold; color: #47479f;\"\u003eBYM11 (CVD Grade)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eThick Double-Layer Al2O3 + TiCN Thermal Shock Barrier\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eEngineered for high-speed, high-temperature continuous dry roughing of carbon steels, tool alloys, and cast iron blocks. Maximum wear resistance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold; color: #47479f;\"\u003eBYS25 (PVD Grade)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eSub-Micron Multi-Layered Nano-TiAlN Coating Shield\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eOutstanding cutting edge toughness. Best optimized for interrupted heavy cutting, tough stainless steel (SS304\/316), and aerospace superalloys.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd; font-weight: bold; color: #47479f;\"\u003eBYK15 (Uncoated Polished)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eMirror-Finished Sharp Micro-Grain Solid Carbide Matrix\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eZero Built-Up Edge (BUE) formulation. Specially developed for high-speed, precision mirror-boring of non-ferrous aluminum alloys, brass, and polymers.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e7. Why Choose BEYOND CNC Machine Tools?\u003c\/h2\u003e\n\u003cp\u003eBEYOND delivers premium-engineered, industrial-grade indexable tool holders trusted by manufacturing facilities worldwide. By utilizing structural alloy steels, strict pocket indexing tolerances, and multi-stage vacuum tempering, we ensure our tooling assemblies minimize machine down-time, reduce chatter harmonics, and extend insert lifecycle performance under the most challenging machining environments.\u003c\/p\u003e\n\u003ch3 style=\"color: #333; font-size: 16px; margin-top: 20px;\"\u003eGlobal Machinist Operational Reviews\u003c\/h3\u003e\n\u003cdiv style=\"display: block; margin-bottom: 25px;\"\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eArthur K. — United States\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Our CNC blocks require an 18mm bar shank. Finding a robust lever-lock style in this size was tough until we found BEYOND. It clamps the WNMG 0804 insert with amazing security. We run deep bores through 1045 steel without a hint of harmonic chatter. Highly recommended.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eJürgen S. — Germany\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Die 18mm Schaftgröße hat genau die zusätzliche Steifigkeit gebracht, die wir brauchten. Screw-on tool holders kept loosening on our long-cycle stainless steel boring loops. This lever mechanical block has zero movement. Pocket sizing is absolute premium grade.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eKenji T. — Japan\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"We use this bar on our multi-axis mill-turn. The 95-degree head works flawlessly for internal step machining down to 23.5mm holes. Excellent swarf clearance. The 6 edges of the WNMG insert keep our operational expenses very low.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff; margin-bottom: 12px;\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★☆\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eMatteo B. — Italy\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Very heavy structural alloy steel core body. Resists high cutting heat without expanding or micro-warping. The hardware alignment is clean, lever pin pulls smoothly.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e0e0e0; padding: 15px; border-radius: 6px; background-color: #ffffff;\"\u003e\n\u003cdiv style=\"color: #ffcc00; font-size: 16px; margin-bottom: 5px;\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 0 0 8px 0; font-size: 13px; font-weight: bold;\"\u003eDavid L. — United Kingdom\u003c\/p\u003e\n\u003cp style=\"margin: 0; font-size: 13px; color: #555;\"\u003e\"Excellent tool finish, shipped fast to our machine shop. Screws and wrenches match global standard tolerances. Outstanding economy using the trigon negative inserts.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e8. AI-Style Engineering Support Engine (FAQ)\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 15px; padding: 12px; background-color: #f9f9f9; border-radius: 4px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f;\"\u003eQ1: What are the main design operational benefits of an 18mm boring bar shank?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA1: An 18mm shank acts as an intermediate rigidity booster. When a 20mm bar is too thick to clear the minimum entry bore diameter, an 18mm bar delivers nearly 40% more structural bending stiffness than a standard 16mm bar, allowing deeper vibration-free metal removal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px; padding: 12px; background-color: #f9f9f9; border-radius: 4px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f;\"\u003eQ2: What is the absolute minimum clearance entry diameter for the S18Q-SWLNR08?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA2: The absolute minimum machining bore diameter (φ Dmin) is 23.0mm (0.9055 inches). Running this tool configuration inside a hole tighter than 23mm will cause the steel head or the lever hardware to rub against the internal bore walls, spoiling the finish.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px; padding: 12px; background-color: #f9f9f9; border-radius: 4px;\"\u003e\n\u003cp style=\"margin: 0 0 5px 0; font-weight: bold; color: #47479f;\"\u003eQ3: How does a lever-lock clamping design maximize industrial manufacturing efficiency?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #444;\"\u003eA3: Screw clamping patterns are prone to thread stripping and back-out when subjected to heavy continuous internal forces. The lever-lock pin mechanics use a secure cross-action layout that leverages the cutting push force to lock the negative insert down harder, protecting the tool pocket from wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; font-size: 20px; border-bottom: 2px solid #47479F; padding-bottom: 5px; margin-top: 30px;\"\u003e9. Technical Maintenance \u0026amp; Troubleshooting Guidelines\u003c\/h2\u003e\n\u003cdiv style=\"margin-top: 15px;\"\u003e\n\u003cdiv style=\"background-color: #f0f2f5; padding: 15px; border-radius: 4px; margin-bottom: 12px;\"\u003e\n\u003ch4 style=\"margin: 0 0 8px 0; color: #333; font-size: 14px; border-left: 3px solid #47479F; padding-left: 8px;\"\u003eEquivalent Industry Models\u003c\/h4\u003e\n\u003cp style=\"margin: 0; font-size: 12px; color: #555;\"\u003eInterchangeable globally with standard international metric \u003cstrong\u003eS18Q-SWLNR08\u003c\/strong\u003e boring tool systems. For regional imperial CNC turrets, this 18mm core body easily pairs with standard reduction sleeves or split sleeve blocks, matching ANSI insert indexing codes **WNMG 431** or **WNMG 432**.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f0f2f5; padding: 15px; border-radius: 4px; margin-bottom: 12px;\"\u003e\n\u003ch4 style=\"margin: 0 0 8px 0; color: #333; font-size: 14px; border-left: 3px solid #47479F; padding-left: 8px;\"\u003eTroubleshooting Tips\u003c\/h4\u003e\n\u003cp style=\"margin: 0; font-size: 12px; color: #555;\"\u003e\u003cstrong\u003eMicro-Vibration \/ Surface Finish Lines:\u003c\/strong\u003e Ensure the center height of the boring bar tip is aligned precisely with the lathe spindle centerline (±0.1mm). Incorrect centerline height changes the active cutting clearance angle, accelerating nose wear.\u003cbr\u003e\u003cstrong\u003eScrew Binding Prevention:\u003c\/strong\u003e Due to localized thermal expansion during continuous cycles, clean the pocket and apply standard anti-seize paste compound to the M2.2 Torx hardware threads regularly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f0f2f5; padding: 15px; border-radius: 4px;\"\u003e\n\u003ch4 style=\"margin: 0 0 8px 0; color: #333; font-size: 14px; border-left: 3px solid #47479F; padding-left: 8px;\"\u003eWorkpiece Material Matrix\u003c\/h4\u003e\n\u003cp style=\"margin: 0; font-size: 12px; color: #555;\"\u003eFully optimized across standard industrial engineering alloy group codes: \u003cstrong\u003eP\u003c\/strong\u003e (Carbon, Low-Alloy \u0026amp; Pre-hardened Mold Steels), \u003cstrong\u003eM\u003c\/strong\u003e (Austenitic, Ferritic \u0026amp; Duplex Stainless Grades), \u003cstrong\u003eK\u003c\/strong\u003e (High-Tensile Grey, Nodular \u0026amp; Ductile Cast Irons), \u003cstrong\u003eN\u003c\/strong\u003e (Aluminum Casting Blanks, Copper Alloys \u0026amp; Non-ferrous Polymers), and \u003cstrong\u003eS\u003c\/strong\u003e (Titanium Alloys, Inconel \u0026amp; Heat-Resistant Superalloys).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43611072659628,"sku":"S18Q-SWLNR08","price":21.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S18Q-SWLNR08_indexable_lever-lock_internal_boring_bar_with_18mm_steel_cylindrical_shank_180mm_reach_length_and_95-degree_approach_angle_for_WNMG_080404_carbide_inserts.jpg?v=1781145183","url":"https:\/\/cnchome-beyond.com\/products\/s18q-swlnr08-cnc-boring-bar-tool-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}