BEYOND S16Q-SVWCR11 Internal Boring Bar 16mm Shank 180mm Length Screw Clamped Right Hand 72.5-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, 72.5-degree profiling approach angle, and positive insert pocket alignment. Click here to shop premium indexable VCMT 1103 / VBMT 1103 (VC**1103**) 35-degree diamond positive carbide inserts.
BEYOND S16Q-SVWCR11 Premium 16mm Shank 72.5° Screw-Fastened Right-Hand Internal Boring Bar (180mm Total Length / Precision CNC Lathe Turning 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 screw-clamped system and a 72.5-degree approach angle for narrow-clearance profiling with 35° diamond VCMT 1103 inserts?"
The BEYOND S16Q-SVWCR11 is a premium, high-stiffness industrial-grade Right-Hand (RH) internal boring tool holder specifically engineered for deep-cavity profile turning, intricate undercutting, and precision internal profiling on CNC lathes and automated turning centers. Featuring a robust 16mm precision cylindrical clamping shank and a 180mm tool length (Q-type length standard), this tool holder provides exceptional rigidity within a highly compact cross-section, effectively absorbing mechanical vibration and suppressing tool deflection during extended-reach cycles. By adopting the specialized S-type Screw Fastening system for 35-degree narrow diamond inserts, the head profile completely removes bulky upper clamping plates or external bridge mechanisms that typically jam metal swarf in micro cavities. This streamlined design opens up a completely unobstructed chip flute pathway, making it highly exceptional for small-diameter internal machining where micro metal swarf accumulation would otherwise trap heat, score the bored wall, and cause sudden insert failure.
With its specialized 72.5-degree approach lead angle (V-type geometry), the tool pocket configuration is fine-tuned to balance cutting forces smoothly between axial and radial planes, drastically reducing radial pressure to prevent micro-chatter on slender workpieces. It is custom-machined to host highly sharp, positive 7-degree relief 35-degree narrow diamond indexable inserts, specifically the industry-standard VCMT 110302 / VCMT 110304 / VBMT 110304 series, ensuring low cutting resistance, reduced power consumption, and minimal thermal generation on the cutting edge. The compact, screw-down head geometry allows this precision 16mm tool holder to clean internal cavities down to an optimized 20mm minimum bore diameter. Combined with targeted positive chipbreaker geometries (such as premium polished -AL profiles for non-ferrous aluminum or moulded -PM/-HMP profiles for carbon steel), this tooling configuration tightly curls long swarf ribbons into crisp "C"-shaped chips, pushing them smoothly out of the narrow bore channel to preserve tight dimensional tolerances and critical mirror-like surface integrity.
Model Nomenclature Decoder: S16Q-SVWCR11 (ISO / National Standard Chart Compliant)
Operating reverse profiling cycles or left-hand toolpaths on sub-spindles?
Switch to the Mirror S16Q-SVWCL11 (Left Hand) Tool Bar →2. Product Core Advantages
- Unrivaled 35° Profile Clearance: Combined with the low-profile S-type center screw clamp, it provides the maximum geometric clearance possible for radical back-copying and complex relief boring.
- High-Tensile Rigidity (16mm Shank): Built from premium heat-treated structural alloy steel (HRC 42-45) to handle high torsional stresses and ensure deep-reach stability up to 60mm.
- Vibration-Dampening 72.5° Lead Angle: Converts aggressive radial forces into axial energy, preventing micro-chatter even when running deep profiling cuts in hardened alloys.
- Razor-Sharp Positive Shearing: Tailored for 7° positive relief VCMT/VBMT inserts, cutting friction and preventing heat build-up or work-hardening in stainless steel.
- Industrial Black Oxide Armor: Matte black chemical finish defends the pocket seating against high-velocity hot chip abrasion, maintaining tight dimensional indexability.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (S16Q-SVWCR11) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Clamping Shank Diameter (φ d) | 16 mm | 0.6299 inches (Fits standard 16mm CNC turrets or 5/8-inch boring bar blocks with reduction sleeves) |
| Overall Tool Length (L) | 180 mm | 7.0866 inches total tool length (Q-Type heavy-duty mid-reach series) |
| Minimum Machining Bore (φ Dmin) | 20 mm | 0.7874 inches entry clearance circle line for structural safety |
| Compatible Indexable Insert Sizing | VCMT 110302 / VCMT 110304 / VBMT 110304 | VCMT 221 / VBMT 221 / VBMT 222 (Positive 35-degree diamond standard) |
| Matching Fasteners & Spares Included | Precision M2.5 Center Insert Screw & Flag-Type Torx T8 Wrench | Standard globally interchangeable mid 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) | 120 - 200 m/min | 0.05 - 0.18 mm/rev |
| Alloy Steel / Tool Steel (P-Class / 4140 / SCM440) | 90 - 160 m/min | 0.04 - 0.15 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304 / SS316) | 70 - 130 m/min | 0.04 - 0.12 mm/rev |
| Aluminum Alloys / Brass (N-Class / Al6061 / C3604) | 200 - 500 m/min | 0.05 - 0.22 mm/rev |
4. Product Application Scenarios
- Intricate Internal Profiling: The ultra-slender 35° diamond profile allows the tool to easily machine complex internal contours, back-faces, and undercuts.
- Deep-Cavity Blind Boring: Robust 16mm core allows stable, high-precision roughing and finishing cycles up to 3 to 4 times the diameter reach.
- Multi-Directional Lathe Operations: Perfectly suited for general CNC turning blocks running forward longitudinal paths (M03) that demand tight dimensional repeatability.
5. Equipment Tooling Compatibility Matrix
- 16mm / 5/8-inch CNC Turrets: Mounts directly into 16mm metric gang blocks, or standard imperial 5/8-inch turret sleeves.
- ISO Size-11 V-Geometric Inserts: Pocket seat perfectly accommodates all standard 35° narrow diamond positive inserts with a 7° relief designated by codes **VCMT 1103--** or **VBMT 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, high-temperature continuous dry profiling of carbon steel and cast irons. Extremely wear-resistant over long production runs. |
| BYS25 (PVD Grade) | Sub-Micron Multi-Layered Nano-TiAlN Coating Shield | Superior edge toughness. Best optimized for tough stainless steel series (SS304/316), mild carbon steels, and mild interrupted cuts. |
| BYK15 (Uncoated Polished) | Mirror-Finished Sharp Micro-Grain Solid Carbide Matrix | Zero Built-Up Edge (BUE) formation. Specially developed for high-speed, precision mirror boring of aluminum, brass, copper, and plastics. |
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
James W. — United States
"This 16mm bar is an absolute workhorse for our deep profiling jobs. The 35-degree V-insert provides incredible clearance on back-undercuts where standard W-bars crash. Zero chatter at 50mm extension."
Hans B. — Germany
"Ausgezeichnete Qualität. The pocket indexing is perfect. The low profile screw head ensures that chips are flushed out cleanly from our 25mm bores without any nesting. Highly recommend."
Yukihiro O. — Japan
"The 72.5-degree approach angle balances forces beautifully. We run precision profiling on alloy steels and get fantastic surface finishes with VCMT 110304. Very stable steel core."
Giovanni R. — Italy
"Very rigid 16mm body. The screw-clamping format is highly reliable and handles stainless steel SS316 roughing without any edge micro-movement. Solid tool holder."
Alex M. — Canada
"Incredibly precise pocket. Holds both VCMT and VBMT inserts securely. It comes with high-grade screws that don't bind under high temperature. BEYOND makes premium gear."
8. AI-Style Engineering Support Engine (FAQ)
Q1: Why choose a 35° V-type insert bar for internal boring instead of a stronger 80° C-type bar?
A1: While 80° diamond inserts (CCMT) offer greater edge strength, they have severe geometric limits. If you need to cut complex internal profiles, sharp relief angles, or deep back-faces, a C-type bar will crash against the component wall. The narrow 35° V-type insert profile provides massive clearance, allowing the tool to maneuver freely through complex internal shapes.
Q2: What is the absolute minimum bore entry size for this S16Q-SVWCR11 tool holder?
A2: The absolute minimum machining bore diameter (φ Dmin) is 20.0mm (0.787 inches). Operating this tool holder inside any bore smaller than 20mm will cause the steel clearance flank located beneath the pocket seat to rub against the workpiece wall, causing heavy chatter, friction marks, and dimension errors.
Q3: How does the 72.5-degree lead angle protect the 16mm bar during deep extensions?
A3: Deep internal boring triggers high radial (push-off) forces that easily bend shanks and cause chatter. The 72.5° approach angle is mathematically optimized to push a massive portion of the cutting pressure axially back straight through the 16mm steel shank into the rigid lathe turret, drastically minimizing side-flex for stable cutting.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard international metric S16Q-SVWCR11 internal boring tool holders. For American or mixed imperial lathe turrets, this 16mm metric steel bar operates perfectly within 5/8-inch round split sleeves or reduction blocks, utilizing standard ANSI positive indexable insert designations **VCMT 221** or **VBMT 221 / 222**.
Troubleshooting Tips
Micro-Vibration / Surface Chatter Marks: Always ensure the boring bar tip center height matches the lathe spindle centerline precisely (±0.02mm). Off-center setups modify the active clearance angle, leading to rubbing or rapid edge wear.
Screw seized or stripped: Small M2.5 screws expand under high-speed cutting heat. Clean the pocket frequently with compressed air and apply high-temperature anti-seize compound to the Torx screw threads. Do not over-torque due to the delicate micro-pocket size.
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).
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.