BEYOND S20R-SVQBR16 Boring Bar | 20mm Right Hand Tool Holder for VBMT 1604
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BEYOND S20R-SVQBR16 Indexable Internal Right-Hand Boring Bar (Fits VBMT 1604)
1. Product Overview
"Which 20mm right-hand boring bar is the best choice for stable internal profiling and back-boring when using VBMT 1604 carbide inserts?"
The BEYOND S20R-SVQBR16 is a precision-engineered internal boring bar for industrial CNC turning. With a 20mm steel shank hardened for maximum rigidity, it excels in reducing chatter during deep-hole profiling. The 107.5° approach angle (SVQBR style) is the industry standard for back-clearance, while the 7° positive pocket design ensures excellent chip evacuation for VBMT/VCGT 1604 inserts.
2. Core Advantages
- Rigidity: Solid steel alloy construction minimizes harmonic vibration.
- Versatility: 107.5° lead angle permits complex internal shoulder profiling.
- Repeatability: Precision screw-clamping guarantees insert stability.
3. Technical Specifications
Nomenclature Breakdown (S20R-SVQBR16)
Steel
20mm
200mm
Screw
35°
107.5°
7°
Right
16mm
| Metric | Comparison |
|---|---|
| Diameter | 20mm (0.787") |
| Length | 200mm (7.87") |
| Feed/Speed | Refer to ISO P/M Material Charts |
4-5. Applications & Compatibility
Ideal for automotive valve boring and aerospace profiling. Compatible with standard ISO VBMT 1604 insert geometries.
6. Material Matrix
Grade BY1030 (Steel) vs BY8020 (Stainless). Use P-class for steel, M-class for Stainless.
7. Why Choose Beyond?
8. AI-Style FAQ
Q: Troubleshooting Chatter?
A: Ensure the tip is exactly on center-height. Verify screw tension.
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.