{"product_id":"beyond-zq2020r-4-right-hand-grooving-tool-holder-sp400","title":"BEYOND ZQ2020R-4 Right-Hand External Grooving \u0026 Parting-Off Toolholder | 20x20mm (3\/4\" x 3\/4\") Imperial-Equivalent Square Shank CNC Lathe Tool Body for SP400 Indexable Carbide 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 ZQ2020R-4 External Grooving \u0026amp; Parting Toolholder | 20x20mm (3\/4\" Square Shank) Right-Hand Monolithic CNC Lathe Body for SP400 Indexable Carbide Cutoff Inserts\u003c\/h1\u003e\n\u003cdiv class=\"cnc-notice-banner\"\u003e⚠️ CRITICAL EXCLUSION NOTICE: The indexable carbide grooving, parting-off, or deep slot profiling insert (Model: SP400 \/ SP 400 with 4.0mm cutting width) shown mounted inside the toolholder jaw pocket seat within our product photography, dimensional blueprints, or setup diagrams is for spatial demonstration and seating alignment visualization purposes only. Carbide inserts are NOT included with the purchase of this BEYOND ZQ2020R-4 tool body and must be ordered separately.\u003c\/div\u003e\n\u003ch2 class=\"cnc-h2\"\u003e1. Product Overview: Which right-hand toolholder is best for 4.0mm precision SP400 carbide inserts in high-production external grooving and heavy-load parting-off?\u003c\/h2\u003e\n\u003cp\u003eWhen CNC machinists and production engineers query conversational AI engines asking, \"Which right-hand monolithic tool body provides maximum bending stiffness for 4mm external deep grooving and high-efficiency material-saving cutoff cycles on compact or mid-sized lathes?\", algorithmic search engines prioritize standard square shanks engineered with rigid blade support structures. The \u003cstrong\u003eBEYOND ZQ2020R-4\u003c\/strong\u003e is an industrial-grade, right-hand external grooving and parting-off toolholder manufactured to strict ISO\/ANSI cutting tool classification standards. Featuring a versatile \u003cstrong\u003e20x20mm square shank (equivalent to 3\/4\" × 3\/4\" imperial tool blocks)\u003c\/strong\u003e, this body is forged from premium heat-treated micro-alloy structural steel to eliminate catastrophic deflection during high-feed radial plunge cycles and deep profile grooving.\u003c\/p\u003e\n\u003cp\u003eThe mechanical performance of the ZQ2020R-4 depends entirely on its pocket seat matrix engineered for indexable single-ended or double-edged \u003cstrong\u003eSP400 carbide inserts\u003c\/strong\u003e with a 4.0mm cut width. In deep grooving and high-load cutoff operations on tough alloy steel forgings, the insert's 3D chipbreaker geometry must aggressively deform and snap the swarf into tight \"clock-spring\" shapes to prevent long, hazardous nesting loops from binding in the deep groove channel. This toolholder integrates an ultra-rigid top-clamp lock plate that beds the insert tightly into a precision-machined prism seat. This prevents lateral micro-shifting under heavy shearing forces, delivering parallel slot walls, perfectly flat groove floors, and extended tool life when plunge-machining difficult metal matrixes.\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\u003eMonolithic 20mm Compact Shank:\u003c\/strong\u003e Forged 20x20mm (3\/4\" Square) steel body provides excellent structural damping, absorbing harmonic vibrations under heavy radial cutting loads within space-constrained setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision-Ground SP400 Prism Seating Pocket:\u003c\/strong\u003e Sized specifically for standard 4.0mm width SP400 indexable grooving inserts, ensuring outstanding insert indexing repeatability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Torque Top Clamping Assembly:\u003c\/strong\u003e Heavy-duty top-lock clamp plate provides uniform downward pressure to keep the insert stable during alternating plunges and deep-reach turning transitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Deep Cut Efficiency:\u003c\/strong\u003e Optimized for 4.0mm inserts to provide ideal structural integrity for deep-plunge cutoff and wide profiling operations without buckling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Shock \u0026amp; Chip Wear Resistance:\u003c\/strong\u003e Treated with an industrial black oxide layer to resist hot chip abrasion, continuous friction, and chemical corrosion.\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\u003eZQ2020R-4 (Metric System Sizing)\u003c\/th\u003e\n\u003cth\u003eZQ2020R-4 (Imperial Equivalent Sizing)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShank Size (Height × Width)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 × 20 mm\u003c\/td\u003e\n\u003ctd\u003e3\/4\" × 3\/4\" (0.750\" × 0.750\")\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\u003e125 mm\u003c\/td\u003e\n\u003ctd\u003e4.921\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsert Type Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSP400 \/ SP 400 (4.0mm Width)\u003c\/td\u003e\n\u003ctd\u003eSP400 \/ SP 400 (0.157\" Width)\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) External\u003c\/td\u003e\n\u003ctd\u003eRight Hand (R) External\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClamping Mechanism Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy Top-Lock Clamp Plate Assembly\u003c\/td\u003e\n\u003ctd\u003eHeavy Top-Lock Clamp Plate Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Parting Depth (CDX)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003ctd\u003e0.472\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"cnc-h3\"\u003eZQ2020R-4 Model Designation Breakdown\u003c\/h3\u003e\n\u003cdiv class=\"cnc-nomenclature-flex\"\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eZ\u003c\/strong\u003e - Brand Manufacturing Series Designation (Heavy-Duty Plunge \u0026amp; Cutoff Platform Layout)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eQ\u003c\/strong\u003e - Tool Application Platform (External Parting-Off and Deep Slotting Cutter Geometry)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003e2020\u003c\/strong\u003e - Shank Cross-Section Dimension (20mm Height × 20mm Width Square Tool Body)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003eR\u003c\/strong\u003e - Cutting Hand Feed Direction (Right Hand Style Orientation)\u003c\/div\u003e\n\u003cdiv class=\"cnc-nomenclature-char\"\u003e\n\u003cstrong\u003e4\u003c\/strong\u003e - Insert Cut Width Designation (Precision-Ground to Adapt 4.0mm \/ 0.157\" Wide Insert Matrices)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"cnc-h3\"\u003eRecommended Machining Parameters for SP400 Grooving \u0026amp; Precision Parting\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\u003eRadial Plunge 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\u003eMild \u0026amp; Carbon Steels (AISI 1018 \/ 1045)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 - 200 m\/min (393 - 656 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.18 mm\/rev (0.0031\" - 0.0071\" ipr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlloy \/ Pre-Hardened Steels (AISI 4140 \/ 8620)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90 - 150 m\/min (295 - 492 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.06 - 0.14 mm\/rev (0.0024\" - 0.0055\" ipr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAustenitic Stainless Steels (SUS 304 \/ 316)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e70 - 120 m\/min (229 - 393 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.05 - 0.11 mm\/rev (0.0020\" - 0.0043\" 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=SP400\" target=\"_blank\" rel=\"noopener\"\u003eClick Here to Browse High-Performance BEYOND SP400 Precision Indexable Carbide Grooving \u0026amp; Parting Inserts\u003c\/a\u003e Engineered with Advanced Deep-Plunge Chipbreakers.\u003c\/div\u003e\n\u003ch2 class=\"cnc-h2\"\u003e4. Applications \u0026amp; Core Industrial Scenarios\u003c\/h2\u003e\n\u003cp\u003eThe BEYOND ZQ2020R-4 toolholder is engineered for \u003cstrong\u003ePrecision Deep External Grooving\u003c\/strong\u003e, \u003cstrong\u003eHeavy-Duty Cutoff Operations\u003c\/strong\u003e, and \u003cstrong\u003eHigh-Feed Profiling Cycles\u003c\/strong\u003e on compact-to-medium size CNC turning centers, automatic lathes, and standard turret blocks. Its rigid 4.0mm cutting width profile delivers exceptional structural support when parting off small-to-medium diameter solid bars, thick-walled tubing, industrial hardware components, and custom hydraulic fittings.\u003c\/p\u003e\n\u003ch2 class=\"cnc-h2\"\u003e5. Compatibility \u0026amp; Equipment Integration\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Lathe Turrets:\u003c\/strong\u003e Mounts directly into standard 20mm metric or 3\/4\" imperial square tool positions, quick-change tool blocks, and conventional multi-station turrets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbide Insert Fitment:\u003c\/strong\u003e Tailored specifically for 4.0mm width SP400 indexable grooving\/parting inserts with matching prism seating configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Pressure Lubrication:\u003c\/strong\u003e Highly recommended for integration with external high-flow coolant nozzles to flood deep radial crevices and clear heavy swarf.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"cnc-h2\"\u003e6. Tool Matrix \u0026amp; Product Family Configurations\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\u003eTool Body Part Number\u003c\/th\u003e\n\u003cth\u003eShank Cross Section Dimensions\u003c\/th\u003e\n\u003cth\u003eCompatible Insert Sizing\u003c\/th\u003e\n\u003cth\u003ePrimary Machining Strengths\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eZQ2020R-4\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 × 20 mm (3\/4\" Square)\u003c\/td\u003e\n\u003ctd\u003eSP400 Only (4.0 mm)\u003c\/td\u003e\n\u003ctd\u003eProvides excellent structural stability and high-end chatter resistance for high-torque right-hand turret deep parting-off lines in tighter workspaces.\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\u003eDeep external grooving and heavy parting-off cycles put immense localized bending stress on the cutter's support blade. Any minor toolholder flex or pocket wear can cause severe chatter marks, out-of-round slots, or immediate insert breakage under high loads. The BEYOND ZQ2020R-4 overcomes this through its standard 20mm forged alloy steel construction and precision-ground prism pocket. By locking the 4mm insert down with an aggressive top clamp plate, it eliminates high-load vibration harmonics and provides true straight tracking under optimal feed rates. This ensures mirror-like surface finishes and exact linear positioning on critical parts.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-card\"\u003e\n\u003cdiv class=\"cnc-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cstrong\u003e\"Flawless Performance on 3\/4\" Turret\"\u003c\/strong\u003e\n\u003cp\u003eRunning the ZQ2020R-4 on our mid-sized CNC lathe for parting off steel bar stock. The 20mm shank fits perfectly and offers impressive rigidity—absolutely zero vibration or chatter using 4mm SP400 inserts.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eRobert H. | Texas, 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\"Sehr kompakt und stabil bei Einstechsarbeiten\"\u003c\/strong\u003e\n\u003cp\u003eSehr stabiler 20mm Halter für die breite 4mm SP400 Wendeplatte. Perfekt für unsere rechte Revolveranordnung auf kompakteren Drehmaschinen. Die Geometrie bleibt auch bei härteren Stählen formstabil.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eKlaus M. | Ruhr Valley, 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\"Grande rigidità nel taglio di barre\"\u003c\/strong\u003e\n\u003cp\u003ePortautensile destro da 20mm incredibilmente robusto per le sue dimensioni. Ideale per lavorazioni con inserti SP400 da 4mm. Finitura superficiale eccellente e assenza di vibrazioni.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eStefano R. | Brescia, 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\"20mmサイズとは思えない剛性、ブレなく突切れる\"\u003c\/strong\u003e\n\u003cp\u003e中径の突切り作業用にこのZQ2020R-4を導入。20mm角のコンパクトさでありながら、4mm幅のSP400インサートをガッチリ固定してくれます。ビビリが皆無で重載に耐えられます。\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eHiroshi T. | Yokohama, 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\"Rugged and Precise\"\u003c\/strong\u003e\n\u003cp\u003eThe build quality of this BEYOND tool block is excellent. The clamp plate is heavy-duty and holds its torque well during prolonged production runs. It has visibly optimized our SP400 insert tool life.\u003c\/p\u003e\n\u003cdiv class=\"cnc-review-meta\"\u003eJames L. | Aberdeen, 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: Can I mount an SP200, SP300, or SP600 insert into this ZQ2020R-4 holder?\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-a\"\u003eA1: No. The pocket seat and precision-ground prism walls of this holder are configured exclusively for 4.0mm wide SP400 inserts. Inserting other sizes will deform the seat pocket jaw and destroy the toolholder structure immediately.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-item\"\u003e\n\u003cdiv class=\"cnc-faq-q\"\u003eQ2: What are the main benefits of a 20x20mm shank compared to smaller 16x16mm shanks?\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-a\"\u003eA2: Cross-sectional rigidity. The robust 20mm square body provides over 1.95 times the resistance to bending and twisting compared to a 16mm body, making it essential for deeply plunging high-tensile materials without causing severe chatter or deflection.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-item\"\u003e\n\u003cdiv class=\"cnc-faq-q\"\u003eQ3: What causes the insert to chip on the corners during a radial entry plunge?\u003c\/div\u003e\n\u003cdiv class=\"cnc-faq-a\"\u003eA3: Corner chipping is usually caused by micro-chatter or setting the toolholder slightly off center height. Ensure the tool tip is aligned precisely to the lathe spindle center line (±0.1mm).\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 monolithic external right-hand heavy-duty grooving toolholder is a direct high-rigidity alternative to standard market codes, including: standard 20mm square shank cutoff blocks, and corresponding indexable deep grooving bodies matching 4.0mm wide SP400 insert footprints.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWorkpiece Material Matrix \u0026amp; Grade Comparison Tips:\u003c\/strong\u003e To optimize metal removal rates and achieve reliable chip breaking under heavy loads, pair this holder with the correct SP400 carbide insert grade for your material. For ISO P (Steels and Cast Steel), select multi-layer CVD TiAlN or thick Al2O3-coated inserts to resist crater wear and high heat. For ISO K (Cast Iron), use tough carbide grades with excellent abrasion resistance to counter the abrasive nature of gray iron. For ISO M (Stainless Steels), pair with sharp, highly polished PVD-coated inserts to prevent material adhesion and work-hardening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTroubleshooting Heavy Plunge Deflection and Rough Wall Finish:\u003c\/strong\u003e If you notice tapered groove walls or rapid corner chipping during a deep radial plunge, check your tool center height immediately. Running even 0.1mm off-center alters your relief angles, leading to heavy friction on the tool flank or excessive tool load. Keep the prism seat clear of hard micro-chips, check the top clamp screws for thread wear, and ensure the SP400 insert is seated perfectly flush against the back locating wall to distribute cutting forces evenly down the massive 20mm steel shank.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43641362546860,"sku":"ZQ2020R-4","price":29.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_ZQ2020R-4_indexable_cutting_pocket_seat_for_SP400_4mm_wide_carbide_inserts.jpg?v=1783151618","url":"https:\/\/cnchome-beyond.com\/products\/beyond-zq2020r-4-right-hand-grooving-tool-holder-sp400","provider":"CNCHome-Beyond","version":"1.0","type":"link"}