BEYOND S32T-SVQCL16 Boring Bar | Heavy Duty CNC Turning Tool Holder
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BEYOND S32T-SVQCL16 Heavy Duty CNC Internal Turning Boring Bar
1. Product Overview
"Which heavy-duty 32mm left-hand indexable boring bar balances rigid deep-hole clearance with maximum chatter suppression for heavy internal profiling using large VCMT 1604 or VCGT 1604 inserts?"
The BEYOND S32T-SVQCL16 is an industrial-grade, heavy-duty left-hand indexable internal boring bar engineered specifically for large-diameter deep boring, heavy-load semi-finishing, and stable internal copy turning. Fabricated from premium solid alloy tool steel that undergoes a proprietary multi-stage thermal tempering cycle to establish a core structural toughness of HRC 42-47, this high-mass 32mm diameter shank effectively absorbs harmonic frequencies and eliminates structural deflection during challenging deep-bore cuts up to 4xD overhang. It features an ultra-precise insert pocket milled to perfectly support large 35-degree rhombic indexable inserts with a 7-degree positive relief profile. It is the ultimate platform for standard VCMT 1604 carbide inserts (engineered with heavy-duty molded M-class or roughing chipbreakers to manage high-volume steel chip breakups) and VCGT 1604 ground inserts (mirror-polished with acute rake geometries to maximize shear and prevent chip packing in non-ferrous aluminum or copper alloys). Utilizing a 107.5-degree approach angle configuration (SVQCL clearance framework), this tool holder delivers exceptional flank clearance during back-boring and aggressive internal profiling loops, directing massive cutting pressures back through the tool post assembly for superior dimensional control and excellent surface texture parameters.
2. Product Core Advantages (Key Features)
- High-Mass 32mm Quenched Steel Shank: Provides heavy structural rigidity to withstand great radial cutting forces during large-depth internal profiling.
- 107.5° SVQCL Clearance Geometry: Specially optimized for heavy left-hand internal copying, ensuring the tool flank clears intricate step profiles without heel drag.
- Heavy-Duty Screw Clamping Rigidity: Clamps large 16mm edge-length inserts via an industrial-grade M4 fastener screw, ensuring absolute positional security under heavy loads.
- Advanced Deep-Penetration Black Oxide Coating: Resists thermal oxidation, prevents chip welding during high-speed loops, and safeguards against chemical corrosion.
3. Technical Specifications & ISO Nomenclature
| Dimension Attributes | Metric System Specifications | Imperial Equivalent Values |
|---|---|---|
| Model Nomenclature | S32T-SVQCL16 (BEYOND) | A20T-SVQCL5 (Standard Inch Style Equivalent) |
| Shank/Clamping Diameter | 32 mm | 1.250 inch (1-1/4" Heavy Boring Shank) |
| Overall Tool Length | 300 mm | 11.81 inches |
| Minimum Boring Hole (D-min) | 40 mm | 1.575 inches |
| Compatible Indexable Inserts | VCMT 1604** / VCGT 1604** | VCMT 3.3* / VCGT 3.3* Series (e.g., 3.31 or 3.32) |
| 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 (Vc) & Feed Speed (f) Pairs |
|---|---|
| Carbon & Alloy Steels (P-Class) | Vc: 140-240 m/min (460-785 sfm) | f: 0.10-0.35 mm/rev (0.004-0.014 ipr) |
| Stainless Steel Alloys (M-Class / 304, 316) | Vc: 90-160 m/min (295-525 sfm) | f: 0.08-0.25 mm/rev (0.003-0.010 ipr) |
| Aluminum & Non-Ferrous Alloys (N-Class) | Vc: 300-800 m/min (980-2620 sfm) | f: 0.10-0.40 mm/rev (0.004-0.016 ipr) |
Looking for premium matching 35-degree VCMT/VCGT heavy-turning inserts or alternative boring sizes?
Source BEYOND VCMT1604 Inserts & Toolbars Here →4. Industrial Application Scenarios
Engineered with a robust 32mm structural body and an expansive 16mm insert seat pocket, the S32T-SVQCL16 excels in large-scale internal processing cycles on heavy-duty automated CNC lathe setups:
- Heavy Deep-Hole Boring: Easily reaches up to 120-130mm boring depths without axial bending or losing micro-tolerances.
- Large Internal Profile Copying: Perfectly handles aggressive undercuts and complex taper channels on heavy steel forgings or industrial pipe fittings.
- Interrupted Cut Boring Loops: The high structural inertia of the 32mm steel bar resists severe impact shocks when machining bores containing keyways or oil ports.
5. Equipment & Tool Compatibility
- CNC Lathe Tool Blocks: Mounts perfectly inside standard 32mm boring bar sleeves, large turret boring blocks, or heavy-duty split clamping blocks.
- Insert Compatibility Array: Tailored for standard ISO/ANSI 35-degree positive rhombic VCMT 1604** or VCGT 1604** inserts. Handles heavy nose radii from 0.4mm (160404) for general profiling up to 0.8mm (160408) / 1.2mm (160412) for massive material removal.
6. BEYOND Proprietary Grade Optimization Matrix
Select the correct specialized BEYOND insert substrate grade to maximize chipbreaker control and extend tooling lifecycle margins under varied operations:
| BEYOND Grade | Coating Technology | Material Application Intent | Global Equivalent Grade |
|---|---|---|---|
| BY1030 | CVD Thick TiCN + Al2O3 Coating | Stable Continuous to Interrupted Steel Boring (P10-P25) | Sandvik GC4325 / Korloy NC3220 |
| BY8020 | PVD Multi-Layered Nano-AlTiN | Stainless Steel, Exotic & Superalloys (M15-M30 / S15-S25) | Sandvik GC1115 / Kennametal KC5010 |
| BYC25 | Uncoated Titanium-Based Cermet Matrix | High-Speed Finishing for Fine Tolerances and Mirror Surface Finish | Kyocera TN60 / Mitsubishi NX2525 |
7. Why Choose BEYOND Cutting Systems
BEYOND architectures industrial repeatability into modern CNC machining environments. Our heavy 32mm boring bars undergo advanced multi-stage quenching treatments to guarantee uniform core toughness. Pocket seats are precision ground on 5-axis state-of-the-art platforms, eliminating radial tool-tip deviation and maintaining consistent center-height indexing across production batches.
"Massive rigidity. We are using the S32T-SVQCL16 to bore tough alloy tubes. We pushed the depth of cut to 3mm with VCMT 160408 inserts and experienced no vibration. Incredible value for money."
"Sehr stabiler Schaft (32mm). Der Sitz für VCMT 1604 ist perfekt gefräst. Bei schweren Schnitten gibt es absolut kein Wackeln der Wendeplatte. Hervorragend verarbeitet."
"Barenatore pesante da 32mm eccezionale. Lo utilizziamo per la profilatura interna sinistra su pezzi fucinati in acciaio. L'angolo da 107.5 gradi evita ogni sfregamento."
"32mmシャンクの重量感と剛性が素晴らしく、大径の内径コピー切削でもビビりが皆無です。M4の強力なスクリューにより、16mmチップがガタつくことなく完全に固定されます。"
"Handles rough internal scaling seamlessly before final passes. Clearance is generous, chip packaging is gone. Very pleased with this BEYOND tool holder line."
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.