BEYOND S20R-SVWBR11 Boring Bar | 20mm Lathe Tool Holder for VBMT 1103
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✓ Guaranteed Quality: Check model, dimensions and compatibility before ordering. | Direct Factory Outlet
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💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
BEYOND S20R-SVWBR11 Indexable CNC Internal Right-Hand Profiling Boring Bar (Fits VBMT 1103)
1. Product Overview
"Which rigid 20mm right-hand boring bar provides maximum clearance and zero chatter during deep internal profiling with VBMT 1103 positive inserts?"
The BEYOND S20R-SVWBR11 is a professional industrial-grade indexable internal boring bar precisely engineered for high-precision right-hand profiling, back-boring, and 95° shoulder squaring operations in medium-sized bores. Forged from high-tensile structural alloy steel and multi-stage oil-quenched to HRC 42-47, this solid 20mm shank provides massive structural stiffness to suppress micro-vibrations across extended overhang lengths up to 4xD (80mm). Superbly optimized for intricate copy turning paths, the precision 5-axis machined pocket features an exact seating alignment designed exclusively to hold 35-degree positive rhombic VBMT 1103 or VCGT 1103 turning inserts. By combining a rigid 20mm steel bar with a 7° positive insert configuration, this assembly drastically lowers cutting resistance, ensures effortless chip evacuation, and prevents rubbing inside tight industrial profiles. The specialized SVWBR right-hand geometry directs heavy cutting forces axially back into the lathe turret, guaranteeing superior part concentricity, exceptional dimensional repeatability, and a mirror-like surface finish.
2. Product Core Advantages (Key Features)
- Rigid Quenched Steel Shank (20mm): Massive alloy steel dampening capacity eliminates harmonic chatter across deep internal reaches up to 80mm.
- 95° Approach Geometry (4th Letter 'B'): Delivers pristine tool clearance for seamless internal profiling, back-boring, and clean 90° blind-hole step squaring.
- Optimized for VBMT 1103 Inserts: Precision pocket design perfectly secures 35° positive single-sided inserts, delivering low cutting forces and superior chip control.
- Industrial Black-Oxide Shielding: Premium anti-wear treatment resists heat deformation and blocks corrosion from water-soluble CNC coolants.
3. Technical Specifications & ISO Nomenclature
| Dimension Attributes | Metric System Specifications | Imperial Equivalent Values |
|---|---|---|
| Model Nomenclature | S20R-SVWBR11 (BEYOND) | A12R-SVWBR3 (Standard Inch Style Equivalent) |
| Shank Clamping Diameter | 20 mm | 0.750 inch (Standard 3/4" Block Fitment) |
| Approach Angle / Lead | 95 Degrees (4th Letter 'B') | 95 Degrees (4th Letter 'B') |
| Overall Tool Length | 200 mm | 7.87 inches |
| Minimum Boring Diameter (D-min) | 24 mm | 0.945 inches |
| Perfectly Compatible Inserts | VBMT 1103** / VCGT 1103** (35° Positive) | VBMT 22* Series (e.g., VBMT 221 / VBMT 222) |
| Fastener Parts Assembly | M2.5 Insert Screw / Torx T8 Drive Wrench | M2.5 Insert Screw / Torx T8 Drive Wrench |
Recommended Cutting Parameters for VBMT 1103 Indexing Setup
| Workpiece Material Substrates | Target Line Cutting Speed (Vc) & Feed Speed (f) Pairs |
|---|---|
| Carbon & Alloy Steels (P-Class / e.g., 4140, 1045) | Vc: 120-220 m/min (390-720 sfm) | f: 0.05-0.20 mm/rev (0.002-0.008 ipr) |
| Stainless Steel Alloys (M-Class / 304, 316) | Vc: 80-150 m/min (260-490 sfm) | f: 0.04-0.15 mm/rev (0.0015-0.006 ipr) |
| Aluminum & Copper Alloys (N-Class / With VCGT) | Vc: 200-600 m/min (650-1960 sfm) | f: 0.04-0.25 mm/rev (0.0015-0.010 ipr) |
Looking for premium 35-degree positive VBMT 1103 indexable carbide inserts to match this toolholder shank?
Source BEYOND VBMT1103 Inserts & Toolbars Here →4. Industrial Application Scenarios
- Intricate Internal Profiling & Copy Turning: Designed specifically for executing fine contours, tapered internal walls, and narrow recessed tracks within precision automotive gear rings and hydraulic components.
- 95-Degree Right-Hand Step Turning: The 4th letter 'B' orientation allows the boring bar to machine square internal shoulders up to 90 degrees cleanly without any structural wall dragging.
- Low-Resistance Finish Boring: Pairing the bar with a sharp 7° positive VBMT insert significantly lowers tool pressure, effectively preventing bore deflection on thin-walled workpieces.
5. Equipment & Tool Compatibility
- CNC Lathes & Boring Blocks: Fits directly into standard 20mm CNC turret clamping blocks, boring sleeves, or standard tool holders on conventional turning centers.
- Universal Insert Indexing Compatibility: Precision engineered to hold standard ISO 35° positive VBMT 1103** or VCGT 1103** indexable inserts (optimally matched with 0.2mm, 0.4mm, or 0.8mm nose radii for fine finishing).
6. BEYOND Proprietary Carbide Grade Matrix for VBMT
Pair your 20mm boring shank with the correct BEYOND carbide grade to optimize chipbreaking performance under heavy load:
| BEYOND Grade | Coating Technology | Material Application Intent | Global Equivalent Grade |
|---|---|---|---|
| BY1030 | CVD Multi-Layer TiCN + Al2O3 | General carbon and heavy structural alloy steel internal finish-to-medium boring. | Sandvik GC4325 / Korloy NC3220 |
| BY8020 | PVD High-Density Nano-AlTiN | Stainless steel castings (304/316) and high-temperature nickel-chrome superalloys. | Sandvik GC1115 / Kennametal KC5010 |
| BYC25 | Uncoated Ti-Based Cermet Matrix | High-speed precision micro-boring to achieve an mirror gloss surface finish. | Kyocera TN60 / Mitsubishi NX2525 |
7. Why Choose BEYOND Cutting Systems
Each BEYOND internal boring shank is engineered for strict dimensional repeatability across automated B2B production lines. Machined on precision 5-axis setups, our pocket geometries guarantee dead-on center alignment to prolong indexable edge life.
"Excellent 20mm right hand profiling bar. Fits perfectly in our CNC blocks. We pair this holder with VBMT 110304 inserts for alloy steel parts. Absolutely zero vibration at 3.5xD overhang, and the pocket alignment leaves zero step lines on back-boring passes."
"Sehr stabiler Drehmeißel. Die Plattensitz-Geometrie für die VBMT 1103 Wendeplatten ist absolut präzise gefertigt. Bei 95 Grad Anstellwinkel lassen sich Absätze innen wunderbar plan drehen. Hohe Standzeit!"
"Bareno da 20mm davvero rigido e ben fatto. La finitura superficiale ottenuta accoppiandolo con inserti VBMT cermet è spettacolare."
"内径加工用にS20R-SVWBR11を購入しました。VBMT1103チップがガタつきなくしっかりと固定され、精度が出しやすいです。非常に満足しています。"
"Decent profiling bar for tight bores. Swarf clears nicely due to the 95 degree angle layout. Holds size across long batches well."
8. Technical FAQ & Troubleshooting Guide
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.