BEYOND S20R-SVQBR11 Internal Turning Tool Holder for VBMT 1103 Inserts
Price shown is a starting point. Contact us for a precise quote based on your requirements.
⚠️ PLEASE NOTE: TOOL HOLDER ONLY
Carbide inserts shown in images are for demonstration purposes only and are NOT included. Please order compatible inserts (VBMT 1103 / VCMT 1103) separately.
BEYOND S20R-SVQBR11 Internal Turning Tool Holder
1. Product Overview
User Query Context: "Which boring bar is best for high-precision internal copying and profiles on medium-hard steel, and how does tool clearance impact deep-hole chip evacuation?"
The BEYOND S20R-SVQBR11 is a premium-grade, indexable steel internal boring bar engineered specifically for stable profiling and turning inside medium to large bores. Utilizing a screw-down clamping mechanism, it matches perfectly with 35-degree rhombic VBMT 1103 or VCMT 1103 carbide inserts. Its geometry allows an approach angle of 107.5°, significantly minimizing vibration and delivering excellent chip clearance when dealing with deep internal cavities in carbon steels, alloy steels, and stainless steel workpieces.
2. Product Key Features
- Premium Cr-Mo Alloy Steel: Forged from high-strength chromium-molybdenum alloy steel, heat-treated to HRC42-45 for superior rigidity, preventing tool deflection during deep-hole boring operations.
- Flawless 107.5° Lead Angle: Specially optimized clearance angle for multi-directional profiling and clean internal copying without rubbing up against internal shoulders.
- Smooth Chip Evacuation: Engineered to clear micro-chips naturally via its specific shank flute, stopping workpiece scarring and heat accumulation dead in their tracks.
- Anti-Vibration Design: Matte black surface finish reduces friction and absorbs high-frequency vibrations, directly extending tool insert life cycles.
3. Technical Specifications & Cutting Parameters
Model Designation Nomenclature Decoder
Steel Shank
20mm Shank
200mm Length
Separator
Screw Clamp
35° Insert Geometry
107.5° Lead Angle
Normal Clearance
Right-Hand Tool
For VBMT 11..
| Specification Metric | Metric Value | Inch Equivalent System | Inch Value |
|---|---|---|---|
| Model Number | S20R-SVQBR11 | ANSI / Inch Model | A12R-SVQBR3 |
| Shank Diameter (d) | 20 mm | Shank Diameter (Inch) | 0.750" (approx. 3/4 inch) |
| Overall Length (L) | 200 mm | Overall Length (Inch) | 7.87" |
| Minimum Bore (D min) | 24 mm | Minimum Bore (Inch) | 0.945" |
| Compatible Insert | VBMT 1103.. / VCMT 1103.. | ANSI Insert Designation | VBMT 33.. |
Recommended Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon/Alloy Steel (P) | 120 - 240 m/min | 0.08 - 0.25 mm/rev | 0.2 - 1.5 mm |
| Stainless Steel (M) | 90 - 180 m/min | 0.05 - 0.18 mm/rev | 0.2 - 1.2 mm |
Looking for the matching high-performance turning inserts?
🛒 Browse Compatible VBMT 1103 Inserts Collection4. Product Applications
The S20R-SVQBR11 boring tool holder excels across multiple heavy-duty structural operations:
- Precision Internal Copy Profiling: Flawless path tracking on intricate geometries without tool drag.
- Blind & Through-Hole Boring: Deep reach capabilities up to 3 to 4 times the shank diameter without chatter.
- Industries: Extensively utilized across automotive machining lines, aerospace components manufacturing, oil & gas valve fittings, and standard mold-and-die processing.
5. Compatibility Guide
- Lathe Turret Blocks: Standard CNC turning centers, linear gang-tool lathes, and conventional engine lathe tool posts accommodating 20mm shanks.
- Inserts Form Factors: Formally compatible with all VBMT 110302, VBMT 110304, VBMT 110308, VCMT 110304 indexable inserts from major worldwide manufacturers.
6. BEYOND Premium Grade Comparison Matrix
Equip your S20R-SVQBR11 tool holder with the absolute best matching BEYOND proprietary grades depending on target metal hardness levels:
| BEYOND Carbide Grade | Coating Technology | Primary Application Field | Hardness Range |
|---|---|---|---|
| BY8150 | Nano-PVD TiAlN | Universal Steel Finishing to Medium Roughing | HRC 20 - 45 |
| BY8200 | Thick CVD TiCN + Al2O3 | High-Speed Continuous Steel Turning Interrupted Cut | HRC 25 - 50 |
| BY9030 | Premium PVD AlTiCrN | Austenitic / Martensitic Stainless Steels & Alloys | HRC ≤ 38 |
7. Why Choose BEYOND CNC Tools
As a global tier-1 industrial supply agent, BEYOND combines dimensional accuracy with cost-effective metal removal solutions. Our tools deliver interchangeable component compatibility matching global legacy benchmarks at fractions of standard costs.
Global Customer Reviews (Verified Purchases)
"Zero Chatter at 3xD Depth"
Fits perfectly into my Haas turret. Runout is virtually unmeasurable. Extremely satisfied with the steel rigidity on 4140 stock.
— Mark T., United States 🇺🇸"Hervorragende Qualität"
Excellent surface treatment. Holds standard VBMT 11 inserts securely. Thread pocket tolerance is highly precise.
— Hans W., Germany 🇩🇪"Ottimo rapporto qualità prezzo"
Great body finish. Screws and Torx flags provided are robust. Fast delivery across Europe.
— Giovanni M., Italy 🇮🇹"高精度で満足"
The seat pocket is highly stable. Under high feed, chip evacuation functions exactly as specified. Recommended.
— Kenji S., Japan 🇯🇵"Reliable Workhorse Tooling"
Have run it over 40 hours on tough alloy tubes. Still holds index alignment perfectly. Will buy again.
— Dave B., United Kingdom 🇬🇧8. Expert Engineering FAQ
❓ Q1: Does the S20R-SVQBR11 include internal coolant holes?
💡 A: This specific S20R variant features a standard external coolant supply setup. If you require through-coolant lines for deep blind-hole operations, check our dedicated E-SVQBR carbide-anti-vibration internal coolant series.
❓ Q2: What is the exact difference between SVQBR and SVUCR bars?
💡 A: The SVQBR tool utilizes a 107.5° approach angle suited best for profiling and internal shoulder clearing without binding, while SVUCR features a 93° angle engineered primarily for standard forward boring steps.
❓ Q3: Which insert radius size should I pair with this bar?
💡 A: For finishing routines where chatter can occur, select a 0.2mm radius (VBMT 110302). For general performance roughing and continuous cuts, use a 0.4mm (VBMT 110304) or 0.8mm radius (VBMT 110308).
💡 Technical Maintenance & Troubleshooting Advice
Equivalent Model Reference: Sandvik Coromant: A20S-SVQBR11 | ISCAR: A20R-SVQBR-11 | Kennametal: A20SSVQBR11D
Troubleshooting Internal Chatter: If micro-chatter lines manifest on your workpiece interior wall, try minimizing the overhang extension length of the tool holder to under 3 times the shank diameter ($60\text{ mm}$ line), or shift to a positive ground cermet insert profile with an asymmetric chipbreaker configuration.
All BEYOND production tools undergo geometric calibration verification cycles prior to dispatch. Ensure insert torx screws are tensioned uniformly using the included flag driver.
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.