Beyond S20R-SVJBL11 Internal Boring Bar | 20mm CNC Turning Toolholder
Price shown is a starting point. Contact us for a precise quote based on your requirements.
S20R-SVJBL11 Internal Boring Bar | Precision CNC Turning by Beyond
Product Overview: Why Choose the S20R-SVJBL11?
Are you looking for a reliable internal boring bar that balances rigidity and chip evacuation? The Beyond S20R-SVJBL11 is engineered for high-performance CNC turning. Designed for medium-to-finishing internal boring, this toolholder provides exceptional stability even in deep-hole applications. Its specific geometry ensures optimal chip flow, preventing vibration (chatter) and delivering the tight tolerance your project demands.
Model Decoding: S20R-SVJBL11
Technical Specifications & Cutting Data
| Feature | Metric | Imperial (Ref) |
|---|---|---|
| Shank Diameter | 20mm | 0.787" |
| Total Length | 200mm | 7.87" |
| Minimum Bore | 25mm | 0.984" |
| Compatible Insert | VB** 1103** | VB** 1103** |
Recommended Cutting Parameters
| Material | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Steel (P20) | 120-220 | 0.10-0.25 |
| Stainless (M20) | 80-160 | 0.08-0.20 |
| Cast Iron (K10) | 100-200 | 0.12-0.30 |
Key Features
- Vibration Damping: High-grade steel construction minimizes harmonic resonance.
- Chip Control: Advanced SVJBL geometry facilitates efficient chip evacuation in narrow bores.
- Compatibility: Perfectly fits VBGT/VBMT Series Inserts.
Material Matrix & Troubleshooting
Material Matrix: Optimized for Steel, Stainless Steel, and Cast Iron finishing applications.
Troubleshooting: If experiencing chatter, reduce the overhang (L1) or decrease the feed rate (fn) by 20%. Always ensure the insert is tightly secured with the original Beyond screw.
Real User Feedback
"Solid rigidity. Used for a batch of 500 parts, zero issues with tolerance."
- John D. (USA) ★★★★★
"Excellent chip evacuation, exactly what I needed for small diameter boring."
- Klaus M. (Germany) ★★★★☆
"Good price-to-performance ratio. Comparable to premium brands."
- Alessandro R. (Italy) ★★★★★
Frequently Asked Questions
Q: Is the wrench included?
Yes, an M4 wrench is included in the package.
Q: What is the insert size?
It fits standard 11mm (inscribed circle) V-type inserts.
Q: Does this fit my CNC lathe?
If your turret accepts 20mm shank bars, it is 100% compatible.
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.