BEYOND S16Q-SVJCR11 Boring Bar | 16mm Right Hand CNC Turning Tool Holder
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BEYOND S16Q-SVJCR11 High-Rigidity Indexable CNC Right-Hand Internal Boring Bar
1. Product Overview
"Which 16mm right-hand boring bar provides the best chip clearance and maximum rigidity for high-precision internal profiling using VCMT 1103 inserts?"
The BEYOND S16Q-SVJCR11 is an industrial-grade, high-rigidity right-hand indexable internal boring bar specifically engineered for tight-tolerance profiling, copy turning, and fine finishing inside narrow bores. Forged from high-tensile structural alloy steel and treated with a proprietary oil-quenching thermal cycle, this 16mm solid steel shank achieves a core hardness of HRC 42-47. This critical metallurgical density provides excellent resistance to harmonic micro-chatter at standard tool overhang extensions up to 4xD (64mm). Designed to resolve the persistent problem of chip jamming in small apertures, the 5-axis precision-milled pocket securely nests 35-degree positive rhombic VCMT 1103 or VCGT 1103 inserts. By matching a compact 11mm insert cutting edge to a 16mm shank, this assembly minimizes tool head干涉 (interference) and maximizes the remaining cross-sectional escape zone inside a minimal 20mm entry diameter. Compatible VCMT inserts feature complex multi-stage molded chipbreakers that force stringy carbon steel chips to crack into tight "C" shapes, while ground and polished VCGT inserts utilize extreme high-rake edge lines to prevent built-up edge (BUE) on sticky non-ferrous aluminum. The 93-degree SVJCR lead angle configuration effectively directs radial deflection forces axially straight into the lathe turret, ensuring excellent cylinder straightness and preventing bore taper.
2. Product Core Advantages (Key Features)
- Streamlined 16mm Body with 11mm Pocket: Opens up critical evacuation channels to smoothly clear chips from small 20mm minimum bores.
- 93° SVJCR Lead Angle Dynamic Stabilization: Converts lateral cutting pressure into axial compression, eliminating taper errors during deep overhangs.
- Advanced Oil-Quenched Steel Shank: Absorbs micro-vibrations, protecting delicate insert cutting tips and yielding mirror-like surface finishes.
- Corrosion-Resistant Matte Black Coating: Thick black-oxide skin safeguards the bar against abrasive chip wash and water-soluble CNC coolant erosion.
3. Technical Specifications & ISO Nomenclature
| Dimension Attributes | Metric System Specifications | Imperial Equivalent Values |
|---|---|---|
| Model Nomenclature | S16Q-SVJCR11 (BEYOND) | A10Q-SVJCR2 (Standard Inch Style Equivalent) |
| Shank Clamping Diameter | 16 mm | 0.625 inch (5/8" Shank Block Size) |
| Overall Tool Length | 180 mm | 7.08 inches |
| Minimum Boring Diameter (D-min) | 20 mm | 0.787 inch |
| Compatible Indexable Inserts | VCMT 1103** / VCGT 1103** | VCMT 2.2* / VCGT 2.2* Series (e.g., 2.21 or 2.22) |
| Fastener Screw / Drive Key | M2.5 * 6.5 / Torx T8 | M2.5 * 6.5 / 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: 130-220 m/min (420-720 sfm) | f: 0.04-0.12 mm/rev (0.0015-0.0047 ipr) |
| Stainless Steel Alloys (M-Class / 304, 316) | Vc: 80-140 m/min (260-460 sfm) | f: 0.03-0.10 mm/rev (0.0012-0.0039 ipr) |
| Aluminum & Non-Ferrous Alloys (N-Class) | Vc: 250-700 m/min (820-2300 sfm) | f: 0.04-0.15 mm/rev (0.0015-0.0059 ipr) |
Looking for matching premium 35-degree VCMT/VCGT 1103 right-hand inserts or alternative boring shanks?
Source BEYOND VCMT1103 Inserts & Toolbars Here →4. Industrial Application Scenarios
The precise layout of a 16mm core diameter married to a low-profile 11mm head envelope renders the S16Q-SVJCR11 the industry standard for small internal contours:
- Small Bore Profiling: Safely negotiates deep internal profiles with entry diameters as low as 20mm with absolute tool clearance.
- Intricate Internal Under-Cutting: The slim 35-degree rhombic geometry sweeps into acute relief angles without standard block interference.
- Blind Hole Boring to Square Shoulders: The specialized 93-degree relief allows the edge to cut squarely down into perpendicular bottom walls.
5. Equipment & Tool Compatibility
- CNC Lathe Block Adaptation: Slides seamlessly into any standard 16mm round boring sleeve, split bushings, or direct block clamping slots.
- Universal Insert Indexing: Milled to support all global ISO standard 35° positive VCMT 1103** / VCGT 1103** inserts (clamping corner radii from 0.1mm up to 0.4mm seamlessly).
6. BEYOND Proprietary Grade Optimization Matrix
Pair your S16Q tool shank with the appropriate BEYOND insert substrate grade to ensure optimized chip control parameters:
| BEYOND Grade | Coating Technology | Material Application Intent | Global Equivalent Grade |
|---|---|---|---|
| BY1030 | CVD Thick TiCN + Al2O3 Layer | Continuous Carbon/Alloy Steel High-Speed Internal Boring (P10-P25) | Sandvik GC4325 / Korloy NC3220 |
| BY8020 | PVD Multi-Layered Nano-AlTiN | Stainless Steels & High-Temperature Exotic Alloys (M15-M30 / S15-S25) | Sandvik GC1115 / Kennametal KC5010 |
| BYC25 | Uncoated Ti-Based Cermet Matrix | Ultra-Fine Mirror Finishing for High Precision and Tolerance Control | Kyocera TN60 / Mitsubishi NX2525 |
7. Why Choose BEYOND Cutting Systems
At BEYOND, we build operational consistency into every tool shank. Our 16mm boring shanks are manufactured using advanced alloy matrices and oil-bath tempering to minimize flex under variable radial pressure loads. Pocket seats are precision-machined to ensure that center-height alignment remains absolutely accurate across multi-batch insert changes.
"The biggest headache with a small 16mm boring bar is chip packing inside the tube. BEYOND pairing a 16mm bar with a smaller VCMT 1103 insert completely fixes this. Leaves plenty of room for high-pressure coolant to blow out the stringy chips. Very clean cuts."
"Sehr stabiler 16mm Schaft. Der Plattensitz passt perfekt für VCMT 1103. Bei 55mm Auskragung gab es absolut keine Vibrationen auf unserer Index-Drehmaschine. Hervorragendes Preis-Leistungs-Verhältnis."
"Utensile destro ottimale per piccoli fori. Il gambo da 16mm offre una rigidità eccezionale rispetto ad altre barre economiche. Finitura superficiale eccellente su particolari in C45."
"最小加工径20mmの狭いワーク内径で使用。11mmのポジチップをしっかりクランプできるため、切り屑の排出性能が抜群です。ビビリが発生しにくく、仕上げ面粗度が格段に向上しました。"
"Solid little right-hand bar. Pocket milling is extremely precise. Screw locking sits flush and keeps the VCMT insert firmly locked during intense profiling passes."
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.