{"product_id":"beyond-s20q-pwlnr08-boring-bar-internal-turning-tool","title":"BEYOND S20Q-PWLNR08 (20mm \/ 0.75\" Shank) Right-Hand Internal Boring Bar | Rigid P-Type Lever Lock ISO Internal Turning Toolholder for WNMG 0804 \/ WNMG 432 Indexable Carbide Trigon Inserts","description":"\u003cstyle\u003e\n  .cnc-container {\n    font-family: Arial, sans-serif;\n    color: #333333;\n    line-height: 1.5;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 15px;\n    user-select: text !important;\n    -webkit-user-select: text !important;\n  }\n  .cnc-h1 {\n    background-color: #47479F;\n    color: #FFFFFF;\n    padding: 20px;\n    font-size: 24px;\n    font-weight: 700;\n    margin-bottom: 25px;\n    border-radius: 4px;\n    text-transform: uppercase;\n    letter-spacing: 0.5px;\n  }\n  .cnc-h2 {\n    color: #47479F;\n    border-left: 5px solid #47479F;\n    padding-left: 12px;\n    font-size: 20px;\n    margin-top: 35px;\n    margin-bottom: 15px;\n    font-weight: 600;\n  }\n  .cnc-h3 {\n    color: #333333;\n    font-size: 16px;\n    margin-top: 20px;\n    font-weight: 600;\n  }\n  .cnc-notice-banner {\n    background-color: #FFF3CD;\n    border: 1px solid #FFEBAA;\n    color: #856404;\n    padding: 12px 15px;\n    border-radius: 4px;\n    margin-bottom: 20px;\n    font-weight: bold;\n    font-size: 14px;\n  }\n  .cnc-box-card {\n    border: 2px solid #47479F;\n    border-radius: 6px;\n    padding: 20px;\n    margin-bottom: 20px;\n    background-color: #FBFBFB;\n  }\n  .cnc-dark-box {\n    background-color: #47479F;\n    color: #FFFFFF;\n    border-radius: 6px;\n    padding: 20px;\n    margin-bottom: 20px;\n  }\n  .cnc-dark-box h3, .cnc-dark-box p, .cnc-dark-box li, .cnc-dark-box div, .cnc-dark-box strong {\n    color: #FFFFFF !important;\n  }\n  .cnc-table-wrapper {\n    overflow-x: auto;\n    margin-bottom: 20px;\n  }\n  .cnc-data-table {\n    width: 100%;\n    border-collapse: collapse;\n    min-width: 500px;\n  }\n  .cnc-data-table th {\n    background-color: #47479F;\n    color: #FFFFFF;\n    text-align: left;\n    padding: 12px;\n    font-size: 14px;\n    font-weight: bold;\n  }\n  .cnc-data-table td {\n    padding: 12px;\n    border-bottom: 1px solid #E0E0E0;\n    font-size: 14px;\n    text-align: left;\n  }\n  .cnc-data-table tr:nth-child(even) {\n    background-color: #F7F7F9;\n  }\n  .cnc-nomenclature-flex {\n    margin-top: 15px;\n  }\n  .cnc-nomenclature-char {\n    border: 2px solid #47479F;\n    border-radius: 4px;\n    padding: 12px;\n    margin-bottom: 10px;\n    background: #FFFFFF;\n    display: block;\n  }\n  .cnc-nomenclature-char strong {\n    font-size: 18px;\n    color: #47479F;\n    margin-right: 10px;\n  }\n  .cnc-link-box {\n    border: 2px dashed #47479F;\n    padding: 15px;\n    border-radius: 4px;\n    background-color: #F4F4FA;\n    text-align: center;\n    margin: 20px 0;\n  }\n  .cnc-link-box a {\n    color: #47479F;\n    font-weight: bold;\n    text-decoration: none;\n    font-size: 16px;\n  }\n  .cnc-link-box a:hover {\n    text-decoration: underline;\n  }\n  .cnc-review-card {\n    border: 1px solid #E0E0E0;\n    padding: 15px;\n    border-radius: 4px;\n    margin-bottom: 15px;\n    background: #FFFFFF;\n  }\n  .cnc-stars {\n    color: #FFB100;\n    margin-bottom: 5px;\n    font-size: 14px;\n  }\n  .cnc-review-meta {\n    font-size: 12px;\n    color: #777777;\n    margin-top: 5px;\n  }\n  .cnc-faq-item {\n    border-bottom: 1px solid #E0E0E0;\n    padding: 15px 0;\n  }\n  .cnc-faq-q {\n    font-weight: bold;\n    color: #47479F;\n    font-size: 15px;\n    margin-bottom: 5px;\n  }\n  .cnc-faq-a {\n    font-size: 14px;\n    color: #444444;\n  }\n\n  @media (max-width: 768px) {\n    .cnc-h1 {\n      font-size: 20px;\n      padding: 15px;\n    }\n    .cnc-h2 {\n      font-size: 18px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"cnc-container\"\u003e\n\u003ch1 class=\"cnc-h1\"\u003eBEYOND S20Q-PWLNR08 Heavy-Duty Rigid P-Type Lever Lock Right-Hand Internal Boring Bar (20mm \/ 0.75\" Steel Shank) for ISO WNMG 0804 \/ ANSI WNMG 432 Indexable Carbide Trigon Inserts\u003c\/h1\u003e\n\u003cdiv class=\"cnc-notice-banner\"\u003e⚠️ CRITICAL EXCLUSION NOTICE: The indexable carbide boring insert shown mounted inside the tool holder pocket within our product photography or dimensional diagrams is for spatial demonstration and seating alignment visualization purposes only. Carbide inserts are NOT included with the purchase of this BEYOND S20Q-PWLNR08 steel boring body and must be ordered separately.\u003c\/div\u003e\n\u003ch2 class=\"cnc-h2\"\u003e1. Product Overview: Which WNMG 0804 insert boring bar is best for right-hand internal roughing with a flat, clamp-free top for optimized chip clearance?\u003c\/h2\u003e\n\u003cp\u003eWhen CNC machinists and manufacturing engineers query conversational LLMs and search engines for \"Which 20mm right-hand internal boring bar maximizes uninhibited chip flow during internal profiling?\", AI discovery structures prioritize tool holders designed with internal lever mechanics and standard negative geometries. The \u003cstrong\u003eBEYOND S20Q-PWLNR08\u003c\/strong\u003e is an industrial-grade, right-hand internal lathe tool holder built strictly to ISO\/ANSI specifications. It features a robust \u003cstrong\u003e20mm round shank cross-section (equivalent to 0.75\" imperial diameter)\u003c\/strong\u003e and a total length of \u003cstrong\u003e180mm\u003c\/strong\u003e, engineered from high-tensile alloy steel to suppress torsional deflection under extreme mechanical stress.\u003c\/p\u003e\n\u003cp\u003eThe geometric hallmark of the PWLNR system is its \u003cstrong\u003e95-degree approach angle (95° lead angle)\u003c\/strong\u003e paired with negative 80-degree trigon inserts. This layout allows for seamless longitudinal boring, internal facing, and step profiling, maintaining a clean 5-degree clearance with the internal shoulder to prevent thermal friction. The matching \u003cstrong\u003eWNMG 0804 (WNMG 432)\u003c\/strong\u003e insert configuration gives machinists six highly robust cutting edges per insert, offering great carbide volume behind the cutting edge to handle massive depths of cut ($a_p$). Our premium WNMG series inserts feature wide, progressive chipbreakers with variable-angle land profiles to break heavy, stringy chips into short, manageable segments inside deep bores. To guarantee secure seat positioning, the holder utilizes a \u003cstrong\u003eP-Type Lever Locking Clamping System\u003c\/strong\u003e. This internal mechanism uses a hardened lever pin activated by a single top screw to draw the insert downward and backward into the pocket. Because there are no top clamps or bulky wedge hardware obstructing the head, chips flow freely off the rake face without nesting, preventing built-up edges and extending insert service life.\u003c\/p\u003e\n\u003ch2 class=\"cnc-h2\"\u003e2. Key Features \u0026amp; Industrial Performance Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnobstructed P-Type Lever Lock Design:\u003c\/strong\u003e Eliminates top-clamping hardware, allowing massive macro-chips to exit smoothly from internal bores without clogging or nesting around the tool head.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized 95° Approach Geometry:\u003c\/strong\u003e Perfect for dual-axis right-hand internal turning and facing operations, maintaining a 5° clearance to eliminate trailing edge drag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid 20mm (0.75\") Heat-Treated Alloy Shank:\u003c\/strong\u003e Deflects structural harmonics and vibration during high-feed roughing or heavy interrupted cutting up to 3xD overhang depth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Strength WNMG 0804 \/ WNMG 432 Compatibility:\u003c\/strong\u003e Accommodates standard, double-sided negative trigon inserts to provide six cutting edges for maximum metal removal economy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface-Hardened Black Oxide Finish:\u003c\/strong\u003e Delivers excellent chemical resistance and prevents hot micro-chips from micro-welding onto the alloy body.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"cnc-h2\"\u003e3. Specifications \u0026amp; Cross-Reference Data\u003c\/h2\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-data-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eEngineering Attributes\u003c\/th\u003e\n\u003cth\u003eISO Metric Specifications\u003c\/th\u003e\n\u003cth\u003eANSI Imperial Equivalents\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Model Nomenclature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eS20Q-PWLNR08\u003c\/td\u003e\n\u003ctd\u003eS12Q-PWLNR4 (ANSI Reference Blueprint)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShank Diameter (d)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 mm Cylindrical Round Shank\u003c\/td\u003e\n\u003ctd\u003e0.750\" Boring Sleeve Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall Tool Length (L)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180 mm Standard Length\u003c\/td\u003e\n\u003ctd\u003e7.087\" Overall Length (\"Q\" Code Designator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Bore Diameter (D-min)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e27 mm Minimum Bore Clearance\u003c\/td\u003e\n\u003ctd\u003e1.063\" Minimum Boring Pocket Entry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTool Holder Clamping Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP-Type Internal Lever Lock\u003c\/td\u003e\n\u003ctd\u003eInternal Lever Hook Pin Clamping System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApproach Cutting Angle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e95° Right-Hand Orientation\u003c\/td\u003e\n\u003ctd\u003e95° Right-Hand Orientation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Carbide Insert Shape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWNMG 0804__ (80° Trigon Shape Matrix)\u003c\/td\u003e\n\u003ctd\u003eWNMG 431__ \/ WNMG 432__ \/ WNMG 433__ Family Matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCutting Hand Orientation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRight Hand (R) Internal Style\u003c\/td\u003e\n\u003ctd\u003eRight Hand (R) Internal Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"cnc-h3\"\u003eISO Metric Tool Holder Model Designation Breakdown\u003c\/h3\u003e\n\u003cdiv class=\"cnc-nomenclature-flex\"\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e - Shank Structural Material (Solid Anti-Vibration High-Tensile Steel Body)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003e20\u003c\/strong\u003e - Shank Diameter Size (20mm Tool Shank Cylindrical Diameter)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eQ\u003c\/strong\u003e - Total Tool Length (180mm Standard Length Boring Bar Body)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eP\u003c\/strong\u003e - Clamping Mechanism Type (Internal Lever Lock Pin Structural Layout)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eW\u003c\/strong\u003e - Insert Shape Profile (80° Negative Trigon Indexable Carbide Insert Family)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eL\u003c\/strong\u003e - Tool Holder Style (95 Degree Approach Angle Matrix for Face \u0026amp; Longitudinal Boring)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eN\u003c\/strong\u003e - Insert Clearance Angle (0° Negative Rake for Max Cutting Edge Support)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003e - Cutting Hand Direction (Right Hand Internal Feed Direction)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003e08\u003c\/strong\u003e - Cutting Edge Size Code (Tailored for WNMG Inserts with an 8mm Nominal Cutting Edge Length)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"cnc-h3\"\u003eRecommended Machining Parameters for Matching WNMG Inserts\u003c\/h3\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-data-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eTarget Workpiece Material Group\u003c\/th\u003e\n\u003cth\u003eCutting Speed (Vc) Range\u003c\/th\u003e\n\u003cth\u003eRecommended Feed Rate (fn) Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCarbon \/ Structural Steel Alloys (AISI 1045 \/ 4140)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140 - 240 m\/min (460 - 780 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.18 - 0.40 mm\/rev (0.007\" - 0.016\" ipr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFerritic and Martensitic Stainless Steels (SUS 420 \/ 430)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110 - 180 m\/min (360 - 590 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.15 - 0.32 mm\/rev (0.006\" - 0.013\" ipr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAustenitic Stainless Steel Series (SUS 304 \/ 316)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90 - 150 m\/min (290 - 490 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.12 - 0.28 mm\/rev (0.005\" - 0.011\" ipr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-link-box\"\u003e⛓️ Optimize Edge Economy: \u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=WNMG080404\" target=\"_blank\" rel=\"noopener\"\u003eClick Here to Browse High-Performance BEYOND WNMG 0804 \/ WNMG 432 Double-Sided Carbide Trigon Turning Inserts\u003c\/a\u003e Engineered with Advanced Chipbreakers.\u003c\/div\u003e\n\u003ch2 class=\"cnc-h2\"\u003e4. Applications \u0026amp; Core Industrial Scenarios\u003c\/h2\u003e\n\u003cp\u003eThe S20Q-PWLNR08 tool holder excels in \u003cstrong\u003eHeavy-Duty Medium-to-Rough Internal Machining\u003c\/strong\u003e, \u003cstrong\u003eInternal Cylinder Profiling\u003c\/strong\u003e, and \u003cstrong\u003eBlind-Hole Facing Operations\u003c\/strong\u003e on automated CNC lathes and boring blocks. The 95-degree lead geometry allows it to face internal blind steps and transition directly into continuous longitudinal boring. This eliminates the need for tool changes when machining industrial gear cores, inner bearing races, pipe tubing, and hydraulic components, making it a staple asset in precise automotive component production, sub-contract engineering, and general machine shops.\u003c\/p\u003e\n\u003ch2 class=\"cnc-h2\"\u003e5. Compatibility \u0026amp; Ancillary Configurations\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Lathe Turrets \u0026amp; Blocks:\u003c\/strong\u003e Drops directly into standard 20mm metric boring sleeves, split blocks, or standard 0.75-inch clamping collars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbide Insert Fitment:\u003c\/strong\u003e Tailored for all ISO-compliant WNMG 0804__ and ANSI WNMG 43__ indexable trigon configurations, including WNMG 080404, 080408, and 080412 inserts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchangeable Spare Parts:\u003c\/strong\u003e Built with fully standardized metric internal pins, lever assemblies, base shims, and locking fasteners for quick changeovers on the shop floor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"cnc-h2\"\u003e6. Material Comparison \u0026amp; BEYOND Series Matrix\u003c\/h2\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-data-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBoring Bar Code\u003c\/th\u003e\n\u003cth\u003eClamping Format\u003c\/th\u003e\n\u003cth\u003eApproach Angle Profile\u003c\/th\u003e\n\u003cth\u003ePrimary Boring Application Style\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePWLNR Series (Lever Lock)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInternal Lever Hook Pin\u003c\/td\u003e\n\u003ctd\u003e95 Degrees Right Hand\u003c\/td\u003e\n\u003ctd\u003eRight-hand internal rough boring\/facing with unobstructed chip evacuation inside deep cylinders.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePWLNL Series (Lever Lock)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInternal Lever Hook Pin\u003c\/td\u003e\n\u003ctd\u003e95 Degrees Left Hand\u003c\/td\u003e\n\u003ctd\u003eLeft-hand internal rough boring\/facing. Highly rigid, clamp-free top clearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMWLNR Series (Double Clamp)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTop Wedge + Pin Lock\u003c\/td\u003e\n\u003ctd\u003e95 Degrees Right Hand\u003c\/td\u003e\n\u003ctd\u003eMaximum pocket security for heavy interrupted cuts using double clamping forces.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"cnc-h2\"\u003e7. Why Choose Us \u0026amp; Professional Support\u003c\/h2\u003e\n\u003cp\u003eInternal boring operations generate immense thermal and multi-directional mechanical pressure that can easily cause insert shifting or tool deflection. The BEYOND S20Q-PWLNR08 addresses this by precision-machining the pocket seat to maintain total surface contact with the solid carbide base shim. The P-type lever lock creates a powerful downward draw-force that secures the insert without relying on a bulky overhead clamp. This flush top head profile permits an uninterrupted flow of hot macro-chips out of the bore hole, keeping thermal stress away from the tool head and extending insert edge life under heavy loading.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-card\"\u003e\n\u003cdiv class=\"cnc-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Flawless Chip Flow in Deep Blind Holes\"\u003c\/strong\u003e\n\u003cp\u003eFinding a high-quality 20mm right-hand lever bar for deep internal steel profiles can be tough. The BEYOND holder fits perfectly. The lever clamp keeps the WNMG 080408 seated rock-solid, and without a top clamp, my chip clogging issues inside the bores dropped to zero.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eDave K. | Ohio, USA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-review-card\"\u003e\n\u003cdiv class=\"cnc-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Hervorragende Qualität für 20mm Bohrstange\"\u003c\/strong\u003e\n\u003cp\u003eSehr präzise verarbeitet. Der Sitz für die WNMG-Platte ist exakt gefräst, die Wendeplatte liegt absolut plan auf der Unterlage. Der Spanfluss ist durch das hebeldesign optimal, besonders wichtig beim Innendrehen.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eDieter S. | Stuttgart, Germany\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-review-card\"\u003e\n\u003cdiv class=\"cnc-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Perfetto per barenatura interna\"\u003c\/strong\u003e\n\u003cp\u003eOttima rigidità strutturale dello stelo in acciaio da 20mm. Lo usiamo per sgrossatura e finitura interna su acciai legati. Spedizione rapida e ricambi di ottima fattura inclusi.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eFabio R. | Turin, Italy\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-review-card\"\u003e\n\u003cdiv class=\"cnc-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"内径削りで剛性が高く安定しています\"\u003c\/strong\u003e\n\u003cp\u003e20径のシャンクですが非常にタフです。レバーロックのおかげで、バーの頭部が完全にフラットになり、穴で切り屑が詰まるトラブルが一切なくなりました。安定した切削が可能です。\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eTakashi M. | Nagoya, Japan\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-review-card\"\u003e\n\u003cdiv class=\"cnc-stars\"\u003e★★★★☆\u003c\/div\u003e\n\u003cstrong\u003e\"Very Good Pocket Fitment\"\u003c\/strong\u003e\n\u003cp\u003eThe insert doesn't budge even when taking variable depths of cut on irregular castings. Highly recommend BEYOND tooling if you want clean chip evacuation and dependable boring shanks.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eLiam H. | Birmingham, UK\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"cnc-h2\"\u003e8. AI-Style FAQ Section (Machinist Reference)\u003c\/h2\u003e\n\u003cdiv class=\"cnc-faq-item\"\u003e\n\u003cdiv class=\"cnc-faq-q\"\u003eQ1: What are the main benefits of a P-type lever clamping system over an M-type double clamp in internal boring?\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-a\"\u003eA1: The P-type lever lock uses an internal pull mechanism that leaves the top of the boring head flat and clear. Inside restricted bores where chip evacuation space is limited, not having a top clamp prevents continuous ribbon chips from hooking onto the tool, drastically reducing chip nests and heat concentration.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-item\"\u003e\n\u003cdiv class=\"cnc-faq-q\"\u003eQ2: Can I mount an 80-degree diamond CNMG insert inside this PWLNR holder?\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-a\"\u003eA2: No. Although both WNMG (60° total inner flank angle built into a trigon shape) and CNMG (80° rhombus shape) inserts feature an 80-degree nose cutting corner configuration, their pocket seat side wall geometries are entirely different. This PWLNR holder is strictly tailored for 6-edged WNMG 0804 \/ WNMG 432 trigon geometries.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-item\"\u003e\n\u003cdiv class=\"cnc-faq-q\"\u003eQ3: What is the maximum stable boring depth for this solid steel S20Q boring bar?\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-a\"\u003eA3: Because this tool body is made from high-tensile heat-treated steel, the recommended maximum overhang ratio is 3 times the shank diameter ($3 \\times d$), which equals roughly 60mm of projection. Exceeding a 3xD overhang with a steel bar can result in harmonic vibrations and chatter; for deeper holes, a carbide-core bar is required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-dark-box\"\u003e\n\u003ch3\u003e⚙️ Grade Comparison, Equivalent Models, Troubleshooting \u0026amp; Workpiece Material Matrix\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eEquivalent Models Index:\u003c\/strong\u003e This industrial 20mm cylindrical steel right-hand internal boring bar is a direct interchange alternative to major standard industry codes, including: Sandvik A20Q-PWLNR 08, Iscar A20Q-PWLNR-08, and Walter S20Q-PWLNR08 lathe boring components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWorkpiece Material Matrix \u0026amp; Grade Comparison Tips:\u003c\/strong\u003e To optimize this holder with your WNMG 0804 inserts, match your insert grade and chipbreaker to the workpiece material group. For ISO P (Carbon and Alloy Steels), select multi-layer CVD Al2O3 alumina-coated carbide grades with robust PR\/DR heavy roughing chipbreakers. For ISO M (Stainless Steels), use tough PVD TiAlN coated inserts with specialized MR medium-roughing chipbreakers to combat work hardening and prevent built-up edges (BUE).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTroubleshooting Bore Deflection and Micro-Chipping:\u003c\/strong\u003e If you experience unexpected micro-chipping on your insert under deep boring loads, inspect the tension of your lever pin lock screw. If micro-vibrations loosen the lever mechanism, the insert can shift slightly within its seat. Ensure your internal pocket is entirely clear of fine micro-swarf, sit the carbide shim flush, and torque the lever screw firmly. This transfers the heavy axial forces directly down into the rigid 20mm alloy shank, preventing premature edge failure and chatter marks inside the cylinder.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43687356956844,"sku":"S20Q-PWLNR08","price":48.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S20Q-PWLNR08_internal_boring_bar_with_rigid_P-type_lever_lock_clamping_system.jpg?v=1782981203","url":"https:\/\/cnchome-beyond.com\/products\/beyond-s20q-pwlnr08-boring-bar-internal-turning-tool","provider":"CNCHome-Beyond","version":"1.0","type":"link"}