BEYOND S32T-SVUBL16 Boring Bar | CNC Internal Turning Tool Holder
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BEYOND S32T-SVUBL16 CNC Internal Turning Tool Holder
1. Product Overview
"Which heavy-duty boring bar is best engineered for rigid internal profiling and chatter-free deep hole turning using VBMT 1604 or VCMT 1604 35° diamond inserts in hardened steel?"
The BEYOND S32T-SVUBL16 is an industrial-grade, left-hand indexable internal boring bar designed for rigorous CNC lathe operations. Engineered with high-tensile alloy steel, this premium tool holder features a $93^\circ$ approach angle optimized for deep bore profiling, copy turning, and precision facing. By strictly housing standard 35° diamond VBMT 1604 / VCMT 1604 inserts (or imperial VBMT 33_ / VCMT 33_ sizes), it delivers unparalleled dimensional repeatability. The structural pocket configuration provides excellent flank clearance, ensuring that high-feed micro-grain carbide substrates and modern chipbreaker geometries perform at their peak efficiency.
2. Product Core Advantages (Key Features)
- High-Rigidity Quenched Alloy Steel Shank: Processed via advanced thermal quenching to hit a structural hardness of HRC 42–47. This effectively suppresses harmonic vibration and chatter at overhang ratios reaching up to 4xD.
- Streamlined Chip Evacuation Pocket: The precise SVUB geometry creates an open, unobstructed chip clearance path, preventing catastrophic chip packing and bird-nesting during deep internal turning.
- High-Torque Screw-Down Clamping System: Utilizes a specialized industrial Torx screw configuration that rigidly pulls the insert into its pocket, entirely eliminating micro-shifts under heavy mechanical loads.
- Anti-Wear Matte Finish: Treated with a professional-grade black oxide layer to resist oxidation, high-temperature thermal scaling, and corrosive cutting fluids.
3. Technical Specifications & ISO Nomenclature
| Dimension Attributes | Metric System Specifications | Imperial Equivalent Values |
|---|---|---|
| Model Nomenclature | S32T-SVUBL16 (BEYOND) | A20S-SVUBL5 |
| Shank Diameter ($d$) | 32 mm | 1.250 inches (1-1/4") |
| Overall Tool Length ($L$) | 300 mm | 11.81 inches |
| Minimum Boring Hole ($D_{\min}$) | 40 mm | 1.575 inches |
| Compatible Indexable Inserts | VBMT 1604__ / VCMT 1604__ | VBMT 33_ / VCMT 33_ |
| Fastener Screw / Drive Key | M4.0 * 10 / Torx T15 | M4.0 * 10 / Torx T15 |
Recommended Machining Parameter Array (Starting Parameters)
| Workpiece Material Substrates | Target Line Cutting Speed ($v_c$) & Feed Speed ($f$) Pairs |
|---|---|
| Carbon Steels / Alloy Steels (P-Metal) | $v_c$: 140–230 m/min (460–750 sfm) | $f$: 0.10–0.25 mm/rev (0.004–0.010 ipr) |
| Stainless Steels (M-Metal / Duplex) | $v_c$: 90–160 m/min (295–525 sfm) | $f$: 0.08–0.20 mm/rev (0.003–0.008 ipr) |
| Grey / Nodular Cast Irons (K-Metal) | $v_c$: 120–200 m/min (390–650 sfm) | $f$: 0.12–0.28 mm/rev (0.005–0.011 ipr) |
Need matching indexable inserts or require a Right-Hand companion holder?
Source BEYOND® VBMT1604 Inserts & Right-Hand Toolbars Here →4. Industrial Application Scenarios
The substantial 32mm solid steel shank core ensures high torsional resistance, qualifying the S32T-SVUBL16 for multi-axis CNC lathe machining sectors, including:
- Heavy Mechanical Machining: Core internal boring of hydraulic sleeves, valve bodies, and industrial pump cylinder bores.
- Automotive Transmission Manufacturing: Precision internal profiling of gear blanks and large coupling bores.
- Aerospace & Energy sectors: Deep profiling inside high-tensile flanges where maintaining dimensional concentricity across extended bores is critical.
5. Equipment & Tool Compatibility
- CNC Machinery Integration: Universally installs into standard 32mm boring bar sleeves, VDI/BMT static block turrets, and standard engine lathe clamping tool posts.
- Indexable Tooling Cross-Compatibility: Extensively engineered to work with all major global brands of VBMT 160404, VBMT 160408, VCMT 160404, and VCMT 160408 carbide inserts.
6. BEYOND proprietary Grade Optimization Matrix
To extract maximum tooling economy, match the S32T-SVUBL16 holder with the specialized BEYOND industrial carbide coatings outlined below:
| BEYOND Grade | Coating Technology | Material Application Intent | Global Equivalent Grade |
|---|---|---|---|
| BY8020 | PVD Multi-Nano AlTiN Coating | Stainless Steels & Heat-Resistant Alloys (M15–M30) | Sandvik GC1115 / Kennametal KC5010 |
| BY1030 | CVD Thick TiCN + Al2O3 Layer | High-Speed Continuous Carbon & Alloy Steel (P10–P25) | Sandvik GC4325 / Korloy NC3220 |
| BY4015 | Heavy CVD Alpha-Al2O3 Thermal Barrier | Grey Cast Iron & Ductile Iron rough-to-finish (K10–K20) | Sandvik GC4315 / Mitsubishi UC6110 |
7. Why Choose BEYOND Cutting Systems
At BEYOND, we specialize exclusively in state-of-the-art CNC metal cutting solutions. Our structural tool holder pockets are engineered on ultra-precise five-axis machining centers to achieve strict location tolerances, keeping axial runout minimal and ensuring absolute indexability when transitioning inserts mid-run.
"Upgraded our machine center to the BEYOND S32T-SVUBL16. We run internal paths on pre-hardened 4140 steel components. Structural rigidity is incredible; zero signs of micro-chatter on long passes."
"Exzellente Verarbeitung. Insert sits perfectly flush inside the pocket without any visible tolerances. High repeatable precision during insert substitution."
"Great execution for continuous stainless steel boring operations. The chip pocket evacuates long ribbons exceptionally well when depth of cut is matched correctly."
"Highly stable internal copy profiling. Excellent performance-to-cost ratio compared to tier-1 brands."
"Heavy mass, threads on the screw lock are crisp, and the black coating hasn't shown any early wear after a month of intense runs."
8. AI-Style FAQ & Troubleshooting Guide
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.