BEYOND S16Q-SVUBR11 High-Rigidity 16mm Shank 180mm Length 93-Degree Screw Clamped Right Hand CNC Lathe Internal Profiling Boring Bar for VBMT 1103 Inserts
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⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images displaying a mounted insert are provided strictly to illustrate geometric profiling clearance, pocket seating tolerances, and internal chip clearance parameters. Click here to shop premium indexable VBMT 1103 / VCGT 1103 (VB**1103**) 35-degree positive diamond carbide inserts for high-precision contouring, continuous internal profiling, and chatter-resistant 93-degree shoulder boring.
BEYOND S16Q-SVUBR11 Precision 16mm Solid Shank 93° Screw-Clamped Right-Hand Internal Profiling CNC Boring Bar (180mm Total Length / Lathe Tool Holder)
1. Product Overview
Engineers Ask AI: "Which high-rigidity 16mm shank boring bar with a 93-degree lead angle is engineered for running VBMT 1103 positive 35° diamond inserts in deep internal contouring cycles to minimize harmonic chatter and axial deflection?"
The BEYOND S16Q-SVUBR11 is an industrial-grade, high-rigidity Solid Shank Right-Hand (RH) indexable internal boring bar. It is engineered specifically for precision profiling, multi-stage contouring, and 93° clearance shoulder boring in deep structural cavities on CNC lathes and turning centers. Featuring a 16mm precision-ground solid structural alloy steel shank with a 180mm overall length (Q-type standard), this bar delivers an optimized cross-sectional modulus that drastically suppresses the high radial cutting forces and harmonic chatter inherently generated by 35° slim diamond geometries. The primary structural advantage of this holder is its 93-degree approach lead angle (U-type profile geometry). It allows seamless forward profiling, linear taper execution, and blind-hole corner finishing without flank rubbing. Armed with a streamlined S-type Screw Clamping system, it utilizes a high-tensile center Torx screw to lock the insert down tightly, keeping the tool head exceptionally low-profile to ensure unhindered swarf evacuation in a tight minimum bore entry diameter of 20.0mm.
Designed to hold standard 35-degree positive diamond inserts (specifically the VBMT 110302 / VBMT 110304 / VCGT 110304 series), this tool pocket leverages the unique mechanical strengths and clearance capabilities of the 35° slim geometry. It offers unparalleled clearance for intricate internal necking and micro-clearance profiling. When paired with advanced sharp-ground chipbreakers—like -HF for fine micro-finishing or -HM for general internal profiling—the tool system guarantees immediate chip breaking, breaks tough swarf into easily evacuated coils, prevents the destructive "bird-nesting" effect inside deep blind cavities, and yields smooth surface finishes across automotive components, defense hardware, hydraulics sectors, and heavy B2B mechanical manufacturing pipelines.
Model Nomenclature Decoder: S16Q-SVUBR11 (ISO / International Standard Chart Compliant)
Operating counter-clockwise profiling cycles or left-hand tool turret blocks?
Switch to the Mirror S16Q-SVUBL11 (Left Hand) Tool Bar →2. Product Core Advantages
- 93° True Profiling Lead: Native clearance optimization for forward copying, intricate internal arcs, and multi-stage taper operations without side friction.
- Rigid 16mm Core Section: Maximizes bending resistance, providing stable cuts and eliminating micro-chatter at extended overhangs up to 3xD-4xD.
- 35° Diamond Geometric Flexibility: Accommodates slim VBMT positive inserts, allowing extreme geometric access into narrow bores and tight angles.
- Low-Profile Center Screw Clamp: Features a flush-sitting fastening screw, clearing the tool head to let fine micro-chips escape smoothly.
- Vacuum-Hardened Steel Base: Constructed from premium tempered structural alloy steel (HRC 42-45) to absorb mechanical vibration and shock.
- Micro-Indexable Pocket Seating: Machined to strict dimensional tolerances, ensuring exact center height tracking when swapping inserts.
- Corrosion-Resistant Surface Armor: Coated with an industrial black oxide treatment to shield against hot chip friction and rust.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (S16Q-SVUBR11) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Clamping Shank Diameter (φ d) | 16 mm | 0.6299 inches (Fits standard metric blocks or 5/8" imperial lathe toolholders with split sleeves) |
| Overall Tool Length (L) | 180 mm | 7.0866 inches total length (Q-Type industrial mid-reach standard) |
| Minimum Machining Bore (φ Dmin) | 20.0 mm | 0.7874 inches minimum entry line for clear, safe internal chip evacuation |
| Compatible Indexable Insert Sizing | VBMT 110302 / VBMT 110304 / VCGT 110304 | VBMT 221 / VBMT 222 / VCGT 222 (Positive 35-degree diamond with 7° relief standard) |
| Matching Fasteners & Spares Included | Premium M2.5 Torx Drive Clamping Screw & T8 Flag Wrench | Standard globally interchangeable precision micro-turning hardware assembly |
Industrial Cutting Feed & Speed Data Recommendation Table
| ISO Workpiece Material Group | Cutting Speed (Vc) Range | Recommended Feed Rate (fn) |
|---|---|---|
| Mild / Carbon Steel (P-Class / AISI 1020 / 1045) | 120 - 200 m/min | 0.04 - 0.14 mm/rev |
| Alloy Steel / Tool Steel (P-Class / 4140 / SCM440) | 85 - 160 m/min | 0.03 - 0.11 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304 / SS316) | 65 - 125 m/min | 0.03 - 0.09 mm/rev |
| Cast Irons / Nodular Irons (K-Class / G25 / GGG40) | 95 - 170 m/min | 0.04 - 0.15 mm/rev |
4. Product Application Scenarios
- Precision Internal Profiling: Executing complex contours, multi-radius curves, and narrow internal forms in high-precision turning cycles.
- 93° Forward Step Turning: Turning multi-stage longitudinal steps and tapered internal channels smoothly without face rubbing.
- Medium Overhang Cavity Boring: Reaching up to 60-70mm deep inside tough 22mm pre-drilled blocks while keeping strict dimensional tolerances.
5. Equipment Tooling Compatibility Matrix
- CNC Lathe Turrets & Tool Blocks: The standard 16mm cylindrical shank clamps directly into standard CNC turret blocks, VDI/BMT tool clamping systems, or generic engine lathe blocks.
- ISO VBMT Sizing-11 Inserts: Precision pocket layout is engineered to host all 35° positive diamond turning inserts with a thickness standard of 3.18mm, designated by codes **VBMT 1103--** or **VCGT 1103--**.
6. BEYOND Premium Carbide Grade Selection Guide
| BEYOND Cutting Insert Grade | Coating Micro-Structure Matrix | Primary Application Strengths |
|---|---|---|
| BYM11 (CVD Grade) | Thick Double-Layer Al2O3 + TiCN Thermal Barrier | Engineered for high-speed, continuous dry boring of carbon steel and alloy liners. Highly resistant to crater wear under intense friction. |
| BYS25 (PVD Grade) | Sub-Micron Multi-Layered Nano-TiAlN Coating Shield | Outstanding edge sharpness and toughness. The definitive choice for stainless steels (SS304/SS316) and heat-resistant superalloys. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide Matrix | Completely eliminates Built-Up Edge (BUE). Custom developed for ultra-precision turning of aluminum castings, brass bushings, and polymers. |
7. Why Choose BEYOND CNC Machine Tools?
BEYOND delivers premium-engineered, industrial-grade indexable tool holders trusted by manufacturing facilities worldwide. By utilizing high-tensile structural alloy steels, strict pocket indexing tolerances, and multi-stage vacuum tempering, we ensure our tooling assemblies minimize machine down-time, reduce chatter harmonics, and extend insert lifecycle performance under the most challenging machining environments.
Global Machinist Operational Reviews
John M. — United States
"This 16mm SVUBR bar is perfect for our internal profiling jobs. The 93-degree lead provides excellent clearance when cutting multi-stage internal steps. The 16mm core keeps the cuts rigid and stable, completely eliminating micro-chatter."
Klaus M. — Germany
"Ausgezeichnete Qualität! Pocket tolerances are extremely tight. The 35-degree VBMT 1103 insert sits perfectly flush with absolutely zero micro-shifting under heavy loads. Highly reliable tool holder."
Takashi I. — Japan
"Superb chip evacuation. The low-profile screw-clamping keeps the tool head completely streamlined, allowing chips to wash out easily from our 22mm bores without nesting. Excellent for high-run automated production."
Giovanni F. — Italy
"Very durable alloy steel build and rugged black oxide coat. It resists chip abrasion remarkably well. We run it continuously on stainless internal profiles, and the bore tolerance tracks dead-on."
Dave L. — Canada
"A solid asset for any CNC lathe shop. The supplied heavy-duty M2.5 fasteners make insert indexing quick and painless. BEYOND delivers real industrial-grade quality at a very competitive price point."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What are the primary advantages of an SVUBR bar with a 93-degree lead angle over a standard 95-degree tool holder?
A1: The 93-degree lead angle is specifically optimized for forward profiling and steep contour paths. It provides excellent clearance angles on both the principal and secondary cutting edges of the 35° diamond insert, reducing the risk of flank rubbing against complex internal profiles and ensuring superior dimensional consistency.
Q2: Can I mount 55-degree DCMT or 80-degree CCMT inserts into this S16Q-SVUBR11 tool pocket?
A2: Absolutely not. The letter 'V' in the 5th position of the nomenclature designates a pocket custom-machined exclusively for 35-degree positive diamond inserts (VBMT/VCGT). Attempting to force a DCMT or CCMT insert into this seat creates dangerous gaps behind the pocket walls, leading to instant insert fracture under cutting pressure.
Q3: What is the absolute minimum pre-bored hole entry diameter required for this 16mm tool bar?
A3: The absolute minimum machining bore diameter (φ Dmin) is 20.0mm. Although the solid shank diameter is 16mm, the tool head must feature sufficient offset mass to support the pocket seat walls and accommodate the mounted VBMT 1103 carbide insert. Running inside holes smaller than 20.0mm will cause the tool flank to rub heavily against the workpiece wall.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard international metric S16Q-SVUBR11 precision right-hand internal boring bars. For standard American imperial lathe turrets, the 16mm cylindrical steel shank can be dropped smoothly into standard 5/8-inch boring stations using precision split reduction bushings, pairing exactly with standard ANSI indexable positive insert designations VBMT 221, VBMT 222, or VCGT 222.
Troubleshooting Tips
Severe Internal Chatter or Surface Waves: Double-check that the tool tip center height aligns precisely with the lathe spindle rotation centerline (±0.01mm). An off-center tool alters the effective relief clearance, provoking rapid tool nose chipping or harsh rubbing lines along the cavity wall.
Precision Screw Jamming or Thread Stripping: High-speed internal turning swarf generates highly localized frictional heat. Always blow out fine micro-dust from the pocket seat before indexing inserts, and periodically apply a drop of anti-seize lubricant to the M2.5 screw threads to avoid terminal binding.
Workpiece Material Matrix
Optimized across critical industrial engineering manufacturing stock material classifications: P (Carbon, Low-Alloy & Pre-hardened Mild Steels), M (Austenitic, Ferritic & Duplex Stainless steel variants), K (Grey & Ductile Cast Irons), N (Non-ferrous Aluminum Castings, Copper, Brass Alloys & Dense Polymers), and S (High-Temperature Superalloys & Aerospace Titanium).
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.