BEYOND S16Q-SVXCR11 High-Rigidity 16mm Shank 180mm Length 113-Degree Screw Clamped Right Hand CNC Lathe Internal Profiling Boring Bar for VCMT 1103 Inserts
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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 profiling clearance, pocket seating tolerances, and internal chip clearance parameters. Click here to shop premium indexable VCMT 1103 / VCGT 1103 (VC**1103**) 35-degree positive diamond carbide inserts for extreme profiling, back-turning, undercut processing, and chatter-resistant 113-degree relief boring.
BEYOND S16Q-SVXCR11 Precision 16mm Solid Shank 113° Screw-Clamped Right-Hand Internal Back-Turning CNC Boring Bar (180mm Total Length / Lathe Tool Holder)
1. Product Overview
Engineers Ask AI: "Which high-rigidity 16mm shank boring bar with an aggressive 113-degree lead angle is designed for running VCMT 1103 positive 35° diamond inserts in complex internal profiling and undercut back-turning cycles?"
The BEYOND S16Q-SVXCR11 is a premium-tier, high-rigidity Solid Shank Right-Hand (RH) indexable internal boring bar. It is explicitly engineered for highly complex internal profiling, undercut machining, and aggressive 113° back-turning operations within deep structural cavities on CNC lathes. 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 aggressively suppresses the high radial cutting forces and harmonic chatter inherently generated by 35° slim diamond inserts. The defining engineering asset of this holder is its 113-degree approach lead angle (X-type profile geometry). This aggressive layout allows the tool head to feed backward or execute sharp relief profiling without side-wall dragging or pocket friction. 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 22.0mm.
Designed to host standard 35-degree positive diamond inserts (specifically the VCMT 110302 / VCMT 110304 / VCGT 110304 series), this tool pocket leverages the unparalleled clearance capabilities of the 35° diamond geometry. It offers supreme adaptability for 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, breaking tough swarf into easily evacuated coils, preventing the destructive "bird-nesting" effect inside deep blind cavities, and delivering impeccable surface finishes across aerospace components, defense hardware, precision hydraulics, and high-spec B2B manufacturing pipelines.
Model Nomenclature Decoder: S16Q-SVXCR11 (ISO / International Standard Chart Compliant)
Operating counter-clockwise profiling cycles or left-hand tool turret blocks?
Switch to the Mirror S16Q-SVXCL11 (Left Hand) Tool Bar →2. Product Core Advantages
- Aggressive 113° Lead Geometry: Purpose-built for internal back-turning, reverse copying, and deep undercut profiling without side wall friction.
- Rigid 16mm Alloy Core: Suppresses severe harmonic vibrations and bending moments induced by the acute 35° diamond tool geometry.
- Extreme Clearance Profiling: Hosts 35° slim VCMT inserts, allowing access into tight, complex internal angles and narrow grooves.
- Low-Profile Center Screw Clamp: Employs a high-tensile flush screw to ensure the tool head remains unhindered during intense micro-chip evacuation.
- Vacuum-Hardened Alloy Steel Base: Hardened to HRC 42-45 to withstand dramatic thermal stresses and absorb microscopic mechanical chatter.
- Sub-Micron Pocket Seating: Machined to strict dimensional limits, keeping center-line alignment identical when indexing inserts.
- Industrial Black Oxide Shield: Chemically treated surface maximizes abrasion resistance against hot chip flows and prevents oxidation.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (S16Q-SVXCR11) | 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 precision split sleeves) |
| Overall Tool Length (L) | 180 mm | 7.0866 inches total length (Q-Type industrial mid-reach standard) |
| Minimum Machining Bore (φ Dmin) | 22.0 mm | 0.8661 inches minimum entry line for clear, safe internal chip evacuation |
| Compatible Indexable Insert Sizing | VCMT 110302 / VCMT 110304 / VCGT 110304 | VCMT 221 / VCMT 222 / VCGT 222 (Positive 35-degree diamond with 7° relief standard) |
| Matching Fasteners & Spares Included | Precision 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) | 110 - 190 m/min | 0.04 - 0.12 mm/rev |
| Alloy Steel / Tool Steel (P-Class / 4140 / SCM440) | 80 - 150 m/min | 0.03 - 0.10 mm/rev |
| Austenitic Stainless Steels (M-Class / SS304 / SS316) | 65 - 120 m/min | 0.03 - 0.08 mm/rev |
| Cast Irons / Nodular Irons (K-Class / G25 / GGG40) | 90 - 160 m/min | 0.04 - 0.14 mm/rev |
4. Product Application Scenarios
- Internal Back-Turning (Pull Boring): Machining reverse internal steps and internal chamfers from the inside out in standard CNC lathe cycles.
- Complex Under-Cut Profiling: Reaching into deep groove reliefs and sealing ring pockets without tool neck collision.
- Precision Cavity Copying: Turning intricate internal geometric curves and concave radiuses on high-tensile shafts and housing components.
5. Equipment Tooling Compatibility Matrix
- CNC Lathe Turrets & Boring Blocks: The standard 16mm cylindrical steel shank mounts flawlessly into CNC toolblocks, VDI/BMT turrets, or universal manual lathe toolposts.
- ISO VCMT Sizing-11 Inserts: Precision-ground seat pocket is structurally configured to hold all 35° positive diamond inserts with a thickness standard of 3.18mm, matching codes **VCMT 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
"Running internal back-boring cycles on pre-drilled steel forgings is tricky, but this 113-degree SVXCR bar nailed it. The 16mm shank held up against the aggressive clearance force without a peep of vibration. Surface profiling is smooth as silk."
Klaus M. — Germany
"Hervorragend! Absolute precision pocket geometry. Anyone who works with 35-degree VCMT 1103 inserts knows they shatter instantly if the seating micro-flaws allow micro-shifting. BEYOND's pocket is ground perfectly flush. Very reliable tool holder."
Takashi I. — Japan
"The 113-degree lead clearance allows incredible profiling maneuvers inside our tight gear cavities. Swarf evacuates beautifully with clean coolant pressure because the low-profile screw head doesn't block the exit path. Highly recommended."
Giovanni F. — Italy
"Excellent black oxide treatment; it prevents chip welding under intense friction. We utilize it heavily on stainless steel internal profiles. Feed must be controlled since 35-degree inserts are fragile, but the bar handles loads nicely."
Dave L. — Canada
"BEYOND's fasteners and screws are top notch. Torx drive threads do not strip out when locking down tightly. This SVXCR11 bar solved our deep O-ring groove profile problems. Outstanding industrial value."
8. AI-Style Engineering Support Engine (FAQ)
Q1: Why does an SVXCR bar require a 113-degree approach angle instead of a standard 95-degree SVQCR angle?
A1: The 113-degree lead angle is specifically calibrated for reverse tracking (back-turning/pull boring) and sharp undercut geometries. While a 95° tool holder blocks backward longitudinal feeds due to back-flank rubbing, the 113° head configuration provides substantial geometric relief clearance, letting the tool profile in both directions seamlessly.
Q2: Can I mount 55-degree DCMT or 80-degree CCMT inserts into this S16Q-SVXCR11 tool pocket?
A2: Absolutely not. The letter 'V' in the 5th position explicitly defines a pocket ground exclusively for 35-degree positive diamond inserts. 55° or 80° inserts possess entirely different internal side-wall angles and will not fit. Attempting to force them will destroy the precision pocket walls and strip the tracking center-thread.
Q3: What is the absolute minimum pre-bored entry diameter needed for this 16mm tool bar to profile safely?
A3: The absolute minimum machining bore diameter (φ Dmin) is 22.0mm. Even though the solid shank is 16mm, the 113-degree angled head layout extends outward to protect the pocket matrix and accommodate the length of the VCMT 1103 insert. Working inside channels below 22mm will result in terminal side-flank crashing.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard international metric S16Q-SVXCR11 precision internal profiling bars. For standard American imperial machine setups, the 16mm cylindrical core shank slides seamlessly into standard 5/8-inch boring bar holders using standard split reductions, matching precisely with standard ANSI indexable positive diamond insert series VCMT 221, VCMT 222, or VCGT 222.
Troubleshooting Tips
Rapid Tool Nose Chipping / Severe Harmonic Waves: 35-degree sharp points are highly sensitive to radial forces. Ensure the tool tip center height lines up identically with the spindle center-line (±0.01mm). If tool tracking runs low or high, the effective side relief clearance vanishes, resulting in rapid micro-chipping or heavy chattering patterns.
Screw Binding / Indexable Pocket Distortion: Deep profiling cycles produce dense, microscopic metal dust particles. Always blow clean the pocket floor with an air-gun before tightening a fresh edge, and lightly coat the M2.5 screw with high-temp anti-seize paste to eliminate thread locking.
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).
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.