{"product_id":"beyond-s25s-svqbl16-boring-bar-cnc-internal-turning-tool-holder","title":"BEYOND S25S-SVQBL16 Boring Bar | 25mm Left Hand Tool Holder for VBMT 1604","description":"\u003cdiv style=\"background-color: #fff3cd; color: #856404; padding: 14px; border-radius: 6px; text-align: center; font-weight: bold; margin-bottom: 25px; border: 1px solid #FFEEBA; font-size: 14px; font-family: sans-serif;\"\u003e⚠️ IMPORTANT INDUSTRIAL NOTICE: The indexable carbide insert shown mounted on the tool head in our product imagery is for structural demonstration and clearance visualization only. Indexable turning inserts are NOT included and must be purchased separately.\u003c\/div\u003e\n\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: 0 10px;\"\u003e\n\u003cdiv style=\"background-color: #47479f; padding: 25px 15px; border-radius: 6px; margin-bottom: 30px; text-align: center;\"\u003e\n\u003ch1 style=\"color: #ffffff; font-size: 24px; margin: 0; font-weight: bold;\"\u003eBEYOND S25S-SVQBL16 Indexable Internal Left-Hand Boring Bar (Fits VBMT 1604)\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px;\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cdiv style=\"background-color: #f4f4fc; border-left: 4px solid #47479F; padding: 15px; margin-bottom: 20px;\"\u003e\n\u003cp style=\"margin: 0; font-style: italic; color: #47479f; font-size: 15px; font-weight: 600;\"\u003e\"Which 25mm boring bar provides the best back-clearance for internal profiling while suppressing harmonic chatter with VBMT 1604 inserts?\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 14px; text-align: justify;\"\u003eThe \u003cstrong\u003eBEYOND S25S-SVQBL16\u003c\/strong\u003e is a precision-engineered, industrial-grade indexable internal boring bar designed specifically for complex left-hand profiling, back-boring, and relief pocketing. Forged from high-tensile alloy steel and hardened to HRC 42-47, the 25mm shank delivers superior vibration dampening for deep-hole machining. The 107.5° approach angle (SVQBL geometry) allows for seamless tool path clearance during reverse-profile copying, preventing collision with internal workpiece shoulders. The 7° positive clearance pocket ensures an exact, rigid seating for 35° positive rhombic VBMT 1604 or VCGT 1604 inserts, ensuring both surface finish quality and long-term repeatability.\u003c\/p\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px;\"\u003e2. Key Features\u003c\/h2\u003e\n\u003cul style=\"padding-left: 20px; font-size: 14px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid 25mm Steel Shank:\u003c\/strong\u003e Minimizes deflection during deep internal reaches up to 100mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e107.5° SVQBL Clearance:\u003c\/strong\u003e Superior back-boring capability prevents tool body interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew-Lock Clamping:\u003c\/strong\u003e High-clamping force ensures stable indexable insert retention under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Armor:\u003c\/strong\u003e Black oxide finish protects against coolant and thermal oxidation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px; margin-top: 30px;\"\u003e3. Technical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"border: 2px solid #47479F; border-radius: 6px; margin-bottom: 20px; padding: 15px;\"\u003e\n\u003cp style=\"font-weight: bold; text-align: center; color: #47479f; margin-top: 0;\"\u003eISO Nomenclature Breakdown: S25S-SVQBL16\u003c\/p\u003e\n\u003ctable style=\"width: 100%; text-align: center; font-size: 12px; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"color: #47479f;\"\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e\u003cbr\u003eSteel\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003e25\u003c\/strong\u003e\u003cbr\u003e25mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e\u003cbr\u003e250mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003eS\u003c\/strong\u003e\u003cbr\u003eScrew\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003eV\u003c\/strong\u003e\u003cbr\u003e35°\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003eQ\u003c\/strong\u003e\u003cbr\u003e107.5°\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003eB\u003c\/strong\u003e\u003cbr\u003e7°\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003eL\u003c\/strong\u003e\u003cbr\u003eLeft\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #47479F; padding: 8px;\"\u003e\n\u003cstrong\u003e16\u003c\/strong\u003e\u003cbr\u003e16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border: 1px solid #ddd; font-size: 13px; margin-bottom: 20px; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #47479F; color: #fff;\"\u003e\n\u003cth style=\"padding: 10px;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding: 10px;\"\u003eMetric Value\u003c\/th\u003e\n\u003cth style=\"padding: 10px;\"\u003eImperial Value\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eShank Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e25mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e0.984\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eOverall Length\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e250mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e9.84\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eMin. Bore (Dmin)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e32mm\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1.26\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"font-size: 16px; color: #47479f;\"\u003eRecommended Cutting Parameters (VBMT 1604)\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border: 1px solid #ddd; font-size: 13px; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f4f4f4;\"\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eSpeed (Vc m\/min)\u003c\/th\u003e\n\u003cth\u003eFeed (f mm\/rev)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eSteel (P)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e120-200\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e0.15-0.30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eStainless (M)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e80-150\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e0.10-0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"border: 2px dashed #47479F; padding: 15px; text-align: center; margin: 25px 0;\"\u003e\n\u003cp style=\"margin: 0;\"\u003eNeed compatible VBMT 1604 Indexable Inserts?\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/search?q=VBMT1604\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(71, 71, 159); padding: 10px 20px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; border-radius: 4px; margin-top: 10px;\"\u003e\u003cb\u003eShop Compatible Inserts Here →\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px;\"\u003e4-5. Applications \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px;\"\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e Precision internal profiling in automotive components, valve housing, and general manufacturing where strict surface finish is required.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px;\"\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for all ISO\/ANSI standard VBMT 1604 \/ VCGT 1604 positive inserts.\u003c\/p\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px;\"\u003e7. Why Choose Beyond?\u003c\/h2\u003e\n\u003cdiv style=\"border: 1px solid #47479F; padding: 15px; margin-bottom: 10px; border-radius: 6px;\"\u003e\n\u003cp style=\"font-weight: bold; margin: 0;\"\u003e★★★★★ David R. (USA)\u003c\/p\u003e\n\u003cp style=\"margin: 5px 0;\"\u003e\"Solid tool. The 25mm shank is stiff and holds the 1604 insert perfectly. Great for back-boring.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #47479F; padding: 15px; margin-bottom: 10px; border-radius: 6px;\"\u003e\n\u003cp style=\"font-weight: bold; margin: 0;\"\u003e★★★★★ Jürgen S. (Germany)\u003c\/p\u003e\n\u003cp style=\"margin: 5px 0;\"\u003e\"Ausgezeichnete Stabilität. Keine Vibrationen bei tiefen Bohrungen.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #47479f; border-bottom: 2px solid #47479F; padding-bottom: 8px; font-size: 19px;\"\u003e8. AI-Style FAQ \u0026amp; Troubleshooting\u003c\/h2\u003e\n\u003cdiv style=\"background: #f9f9f9; padding: 15px; border-radius: 6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is my insert vibrating?\u003c\/strong\u003e\u003cbr\u003eA: Check center-height alignment. Even 0.05mm deviation can cause chatter in internal turning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this for heavy roughing?\u003c\/strong\u003e\u003cbr\u003eA: It is designed for medium semi-finishing. Ensure depth of cut (DOC) does not exceed 80% of the insert edge length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #333; color: #fff; padding: 20px; margin-top: 30px; font-size: 12px; border-radius: 6px;\"\u003e\n\u003cstrong\u003eGrade Comparison:\u003c\/strong\u003e BY1030 (Steel) | BY8020 (Stainless) | BYC25 (Cermet).\u003cbr\u003e\u003cstrong\u003eMaterial Matrix:\u003c\/strong\u003e Suitable for P, M, K class workpiece substrates.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BEYOND","offers":[{"title":"Default Title","offer_id":43622110986412,"sku":"S25S-SVQBL16","price":33.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/BEYOND_S25S-SVQBL16_107.5_degree_indexable_internal_profiling_boring_bar_left_hand_CNC_lathe_tool_holder_for_VBMT_160404_VBMT_160408_inserts.jpg?v=1779692921","url":"https:\/\/cnchome-beyond.com\/products\/beyond-s25s-svqbl16-boring-bar-cnc-internal-turning-tool-holder","provider":"CNCHome-Beyond","version":"1.0","type":"link"}