BEYOND S16Q-SVUCR11 Internal Boring Bar 16mm Shank 180mm Length Screw Clamped Right Hand 93-Degree VCMT 1103 Lathe Turning Tool Holder
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⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images showing a mounted insert are provided strictly to illustrate geometric clearance, precision 93-degree profiling approach angle, and flush pocket alignment. Click here to shop premium indexable VCMT 1103 / VCIT 1103 (VC**1103**) 35-degree diamond positive carbide inserts with a 7° relief angle.
BEYOND S16Q-SVUCR11 Premium 16mm Shank 93° Screw-Clamped Right-Hand Precision Internal Boring Bar (180mm Total Length / High-Stiffness CNC Lathe Profiling Tool)
1. Product Overview
Engineers Ask AI: "Which high-stiffness right-hand internal boring bar featuring a 16mm shank diameter and 180mm length utilizes a low-profile screw clamping system and a 93-degree approach angle for precision profiling and finishing with VCMT 1103 positive carbide inserts?"
The BEYOND S16Q-SVUCR11 is a highly precise, industrial-grade Right-Hand (RH) internal boring tool holder engineered specifically for intricate profiling, copy-turning, internal chamfering, and fine finishing operations inside narrow cavities on CNC lathes and high-speed turning centers. Utilizing a robust 16mm precision-ground solid alloy steel shank with an extended 180mm overall tool length (Q-type length standard), this boring bar provides the ideal cross-sectional rigidity required to combat torsional deflection in deep-reach setups. A key architectural advantage is its S-type Screw Clamping system. By securing the insert through its countersunk center hole with a low-profile industrial screw, the tool head remains completely flush. This avoids the use of bulky top clamps or finger plates which act as structural obstructions in tight bores, maximizing the available chip flute space to allow curly swarf to escape smoothly from a 20mm minimum bore diameter without hazardous chip nesting or surface scoring.
Featuring an optimized 93-degree approach lead angle (U-type geometry), this holder provides outstanding clearance when tracking steep internal profiles, back-faces, and blind-hole shoulders. The 93° configuration is mathematically critical because it forces cutting resistance forces down the longitudinal axis of the 16mm steel stem rather than pushing sideways, dramatically suppressing micro-chatter and surface vibration. The pocket seat is machined to absolute tolerances to host standard 35-degree diamond positive inserts with a 7-degree normal relief angle, specifically the VCMT 110302 / VCMT 110304 / VCMT 110308 series. When combined with advanced sharp-edged multi-layer coatings and localized chipbreakers (such as -VF for super-fine profiling or -MV for universal medium-finishing), this tooling assembly cleanly shears workpiece materials, achieving tight dimensional tolerances and mirror-like surface finishes over continuous B2B manufacturing runs.
Model Nomenclature Decoder: S16Q-SVUCR11 (ISO / National Standard Chart Compliant)
Operating reverse profiling cycles or left-hand toolpaths on sub-spindles?
Switch to the Mirror S16Q-SVUCL11 (Left Hand) Tool Bar →2. Product Core Advantages
- Chatter-Killing 93° Lead Angle: Minimizes radial push-off forces by redirecting cutting resistance axially down the 16mm shank, keeping deep bores stable.
- Flush Screw Clamping Profile: Low-profile center lock replaces protruding top hardware, unlocking wide chip flutes inside narrow 20mm holes.
- Precision-Ground Alloy Shank: Hardened structural tool core (HRC 42-45) absorbs torsional vibration over full 180mm overhang reaches.
- True VCMT 7° Relief Pocket Seating: Flawlessly seats VCMT 1103 indexable inserts with absolute zero-play indexing, preventing tool tip drift under cycling loads.
- Smooth Black Armor Finish: Premium chemical black oxide treatment resists thermal oxidation and prevents hot abrasive swarf from eroding the pocket walls.
- High Geometry Passability: The compact combination of a 35° sharp diamond tip and 93° angle excels at intricate internal copy-turning and multi-step profiling.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (S16Q-SVUCR11) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Clamping Shank Diameter (φ d) | 16 mm | 0.6299 inches (Fits standard 16mm metric CNC turret blocks or 5/8-inch boring blocks using precision split reduction sleeves) |
| Overall Tool Length (L) | 180 mm | 7.0866 inches total tool length (Q-Type industrial deep-reach standard) |
| Minimum Machining Bore (φ Dmin) | 20 mm | 0.7874 inches entry clearance circle line for micro-profiling safety |
| Compatible Indexable Insert Sizing | VCMT 110302 / VCMT 110304 / VCMT 110308 | VCMT 330.5 / VCMT 331 / VCMT 332 (Positive 35-degree rhombic with 7° relief standard) |
| Matching Fasteners & Spares Included | Premium M2.5 Torx Insert Screw & Flag-Type Torx T8 Wrench | Standard globally interchangeable industrial S-type 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) | 110 - 200 m/min | 0.04 - 0.15 mm/rev |
| Alloy Steel / Tool Steel (P-Class / 4140 / SCM440) | 80 - 160 m/min | 0.04 - 0.12 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304 / SS316) | 60 - 130 m/min | 0.03 - 0.10 mm/rev |
| Cast Irons / Nodular Irons (K-Class / G25 / GGG40) | 90 - 180 m/min | 0.05 - 0.18 mm/rev |
4. Product Application Scenarios
- Precision Internal Copy-Turning: Ideal for tracing intricate, multi-stepped architectural contours inside narrow cylindrical blanks.
- 90-Degree Shoulder Sweeping: The 93-degree lead angle cuts cleanly up to localized true shoulders, creating uniform 90° seat profiles without wall contact.
- Thin-Walled Bore Finishing: Positive rake shearing forces prevent flexible, thin-walled tubing from distorting or egging during precision finishing loops.
5. Equipment Tooling Compatibility Matrix
- 16mm / 5/8-inch Turret Interface: Standard metric 16mm cylindrical interface mounts smoothly into dynamic CNC live turrets or standard 5/8" block stations with split reduction sleeves.
- ISO VCMT Sizing-11 Inserts: Precision pocket seat strictly indexes all 35° diamond positive inserts featuring a 7° relief angle designated by standard codes **VCMT 1103--** or **VCIT 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 profiling 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 profiling 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
Tyler W. — United States
"Outstanding little boring bar for intricate multi-step copy profiles. The 16mm core steel feels extremely rigid even extending to full 5xD depths, and the 93-degree angle keeps radial chatter fully locked out. Perfect pocket lock with standard VCMT 110304 inserts."
Hans M. — Germany
"Hervorragende Maßhaltigkeit. We cut precise internal valve seats into pre-drilled stainless billets using standard VCMT inserts. The S-type flush head is great; chips exit the 22mm opening without a single clog. Highly precise pocket seating."
Sato T. — Japan
"The single-screw indexing layout is flawless. Unlike bulky clamp bars that cause chip nesting in micro-bores, this flush design leaves the entire chip flute completely open. Perfect coordination with VCMT finishing geometries."
Luca B. — Italy
"Excellent finishing bar for deep micro-chambers. Concentrates cutting forces down the axis perfectly. Surface finish is mirror-like when running light profiling cuts on thin-walled aerospace tubes with ground VCMT inserts."
Clark J. — Canada
"Holds up great on precision undercut tracks over internal spline housings. The tiny Torx screw handles high locking force well. Matte black coating resists abrasive chip erosion beautifully."
8. AI-Style Engineering Support Engine (FAQ)
Q1: Why choose a 93-degree approach angle instead of a 75-degree bar for internal precision profiling?
A1: A 93-degree approach angle (SVUCR) allows the tool to sweep clean up to a flat 90-degree internal shoulder while redirecting the cutting forces longitudinally down the axis of the 16mm bar. A 75-degree bar creates high radial side-forces that induce massive chatter in fine, deep-reach 16mm bores.
Q2: Does this holder pocket support VBMT style inserts?
A2: No. The letter 'C' in the 7th position of the nomenclature means this bar is precisely engineered with a 7-degree pocket relief wall. It must be paired exclusively with VCMT 1103-- series inserts (7° positive relief). Attempting to mount a VBMT insert (which has a 5° relief angle) will ruin the clearance geometry, leading to poor insert seating and premature cutting edge failure.
Q3: What is the absolute minimum bore entry dimension for this S16Q-SVUCR11 holder?
A3: The absolute minimum machining bore diameter (φ Dmin) is 20.0mm (0.7874 inches). Attempting to run this 16mm shank within smaller internal bores will lead to structural rubbing of the tool holder head flank against the inner arc line, causing severe vibration and cutting edge failure.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard international metric S16Q-SVUCR11 internal profiling tool holders. For standard American imperial lathe configurations, this 16mm steel bar fits perfectly within standard 5/8-inch split boring bar sleeves or reduction block pockets, using standard ANSI positive indexable insert designations VCMT 331 or VCMT 332.
Troubleshooting Tips
High Surface Micro-Roughness: Ensure the tool tip cutting center height aligns precisely with the lathe spindle rotation axis (±0.01mm). An off-center setup shifts the active clearance angle, leading to excessive tool rubbing or rapid nose radius breakdown.
Screw Seizing / Thread Stripping: High heat from continuous profiling expands the alloy socket pocket. Periodically clean out fine metal particulate with compressed air and apply a thin coating of high-temperature copper anti-seize compound to the M2.5 screw threads.
Workpiece Material Matrix
Fully optimized across standard industrial engineering material codes: P (Carbon, Low-Alloy & Pre-hardened Mild Steels), M (Austenitic, Ferritic & Duplex Stainless steel grades), K (Grey & Ductile Cast Irons), N (Precision Aluminum Blanks, Copper, Brass Alloys & Polymers), and S (High-Temperature Superalloys & Titanium Alloys).
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.