BEYOND S16Q-SVXCL11 Boring Bar | CNC Internal Turning Tool Holder
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BEYOND S16Q-SVXCL11 Indexable CNC Internal Turning Boring Bar
1. Product Overview
"Which precision 16mm left-hand indexable boring bar provides optimal flank clearance and maximum rigidity for tight internal profiling using 35-degree VCMT or VCGT 1103 carbide inserts?"
The BEYOND S16Q-SVXCL11 is an industrial-grade, precision-engineered left-hand indexable internal boring bar optimized for restrictive internal profiling, back-boring, and high-accuracy finishing operations inside small-to-medium cavities. Featuring a compact 16mm diameter solid steel shank hardened via advanced multi-stage quenching treatments to HRC 42-47, this tool holder delivers exceptional structural resistance against elastic deflection and harmonic tool chatter during extended overhang cycles up to 4xD. It is custom-tailored to host standard 35-degree rhombic indexable cutting inserts—including the VCMT 1103 and VCGT 1103 series. By presenting a sharp 35° diamond profile at a specialized 113-degree approach angle, it provides maximum flank clearance, eliminating trailing-edge heel rubbing during complex internal reverse-taper contouring where conventional 55° or 80° boring tools fail. Backed by a high-tensile screw-down clamping system, it guarantees absolute insert seating stability under heavy chip loads, providing superior surface finish quality and long-term repeatability.
2. Product Core Advantages (Key Features)
- Rigid 16mm Quenched Alloy Steel Shank: High-density composition maximizes dynamic stiffness in tight bores, preventing structural deflection and surface micro-chatter during deep internal operations.
- SVXCL 113° Clearance Angle Pocket Architecture: Engineered specifically for left-hand internal copying, ensuring the narrow 35° insert profiles freely without heel dragging or minor-edge workpiece interference.
- Precision-Ground Pocket Nesting: Mirror-milled insert seat tolerances guarantee absolute spatial repeatability for VCMT/VCGT 1103 inserts, distributing cutting forces uniformly to safeguard delicate tool tips.
- Anti-Corrosive Black Oxide Treatment: Industrial matte surface skin prevents chip welding, reduces thermal heat accumulation, and protects against chemical wear from high-pressure water-soluble coolants.
3. Technical Specifications & ISO Nomenclature
| Dimension Attributes | Metric System Specifications | Imperial Equivalent Values |
|---|---|---|
| Model Nomenclature | S16Q-SVXCL11 (BEYOND) | A10Q-SVXCL2 (Standard Inch Style Equivalent) |
| Shank/Clamping Diameter | 16 mm | 0.625 inch (5/8" Standard Boring Shank) |
| Overall Tool Length | 180 mm | 7.09 inches |
| Minimum Boring Hole (D-min) | 22 mm | 0.866 inches |
| Compatible Indexable Inserts | VCMT 1103** / VCGT 1103** | VCMT 22* / VCGT 22* Series (e.g., 221 or 222) |
| Fastener Screw / Drive Key | M2.5 * 6.0 / Torx T8 | M2.5 * 6.0 / Torx T8 |
Recommended Machining Parameter Array (Starting Parameters)
| Workpiece Material Substrates | Target Line Cutting Speed (Vc) & Feed Speed (f) Pairs |
|---|---|
| Carbon & Alloy Steels (P-Class) | Vc: 120-220 m/min (390-720 sfm) | f: 0.05-0.12 mm/rev (0.002-0.005 ipr) |
| Stainless Steel Alloys (M-Class / 304, 316) | Vc: 80-150 m/min (260-490 sfm) | f: 0.04-0.10 mm/rev (0.0016-0.004 ipr) |
| Aluminum & Non-Ferrous Alloys (N-Class) | Vc: 200-500 m/min (655-1640 sfm) | f: 0.05-0.15 mm/rev (0.002-0.006 ipr) |
Need premium matching 35-degree VCMT/VCGT inserts or alternative sizes?
Source BEYOND VCMT1103 Inserts & Toolbars Here →4. Industrial Application Scenarios
Combining a rigid 16mm core diameter with a precise 11mm indexable pocket structure, the S16Q-SVXCL11 handles high-precision internal machining across standard multi-axis CNC lathe turrets:
- Narrow Bore Profile Copying: Executing delicate profiling steps inside bore diameters down to 22mm without losing centerline tool alignment.
- Internal Shoulder Back-Boring: Navigating restrictive back-boring paths using a left-handed setup, allowing the 35° sharp insert tip to turn relief cuts without dragging the body shank.
- Precision Finishing Cuts: Deploying polished ground VCGT aluminum geometries or cermet inserts to achieve brilliant surface finishes and close tolerance controls.
5. Equipment & Tool Compatibility
- CNC Lathe Tool Blocks & Sleeve Bushings: Mounts securely directly inside 16mm ID linear boring bar blocks or corresponding split clamping sleeve bushings.
- Standard Insert Seating Compatibility: Precision engineered to seat standard ISO/ANSI 35-degree rhombic profiles. Tailor-fit for PVD/CVD coated VCMT 110302/110304 configurations, or high-rake VCGT 110304/110308 series.
6. BEYOND Proprietary Grade Optimization Matrix
Select the correct specialized BEYOND insert substrate grade to maximize chip breaker 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 16mm boring bars undergo advanced multi-stage tempering 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.
"Flawless 16mm left hand tool holder. Completely eliminated our micro-chatter issues inside our tight pneumatic cylinders when pulling back-boring loops. Highly recommend."
"Präziser 16mm Plattensitz. Passt perfekt für VCMT1103. Die Durchmessertoleranzen bleiben auch bei längeren Laufzeiten absolut stabil."
"Ottimo stelo da 16mm in acciaio temprato. Finitura superficiale eccellente con inserti VCGT per alluminio lucido. Prezzo molto competitivo."
"16mmのシャンクで22mmの小径ボーリング加工が極めて安定します。チップのネジ留め精度も高く、芯高が狂いません。"
"The small head geometry gives massive chip clearance. Matte black finish holds up great against high-pressure emulsion fluid."
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.