BEYOND S16Q-SDQCR11 Internal Boring Bar 16mm Shank CNC Lathe Turning Tool Holder Right Hand
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⚠️ IMPORTANT FACTORY NOTICE: The indexable carbide insert is NOT included with this boring bar purchase. Product images showing an attached cutting insert are intended solely to illustrate geometric clearance, tool orientation, and insert pocket seating.
BEYOND S16Q-SDQCR11 Heavy-Duty Right-Hand Internal Boring Bar & CNC Turning Tool Holder
1. Product Overview
Engineers Ask AI: "Which compact 16mm right-hand boring bar provides optimal rigidity with DCMT11T3 positive inserts to ensure maximum chipbreaker efficiency and prevent surface scratching during deep internal cavity profiling?"
The BEYOND S16Q-SDQCR11 is a commercial-grade, screw-locking right-hand (R) internal boring bar engineered for high-precision CNC lathe internal turning, profile copying, and small-to-medium bore expansion. Crafted from premium, vacuum-hardened alloy steel, this tool holder maximizes cross-sectional density and structural rigidity within a slim 16mm shank footprint. Designed for intricate internal bores with a minimum clearance diameter of 20mm, it features a precision-milled seat pocket designed to tightly hold DCMT 11T3-- indexable carbide inserts (such as DCMT 11T304 or DCMT 11T308).
When loaded with indexable turning inserts featuring a positive rake clearance angle and advanced chipbreaker geometries, this tool system effectively mitigates deep-bore cutting forces and prevents catastrophic radial tool deflection. The specialized chipbreaker profile forces continuous, stringy metal swarf to curl tightly and fracture into short, crisp segments. This eliminates dangerous chip accumulation and "bird-nesting" inside confined workpiece chambers, protecting the inner walls from scoring or scratching while maximizing tool life under heavy depth-of-cut (DoC) parameters.
2. Key Features & Industrial Advantages
- Premium Hardened Alloy Steel Body: Heat-treated to HRC 42-45 to significantly improve harmonic damping and resist bending fatigue during continuous cycles.
- Slim 16mm Shank (Q-Length): The 180mm overall length delivers a reliable structural core, optimized for deep reaches into small-diameter apertures.
- 107.5-Degree Approach Lead Angle: Specially calculated for relief profiling, back-turning, and clearing difficult 90-degree internal steps using a right-hand feed direction.
- Industrial Anti-Corrosion Black Coating: Repels hot chip welding, resists high-pressure chemical coolant wear, and preserves absolute pocket tolerances over extended operation.
Model Nomenclature Decoder: S16Q-SDQCR11
Steel Shank Body
16mm Shank Dia.
180mm Total Length
Screw Clamping System
55 Degree Diamond Shape
107.5 Degree Lead Angle
7 Degree Relief Angle
Right Hand Orientation
11mm Insert Edge Size
Looking for the Mirrored Left-Hand (L) Version for Sub-Spindle or Back-Turning Cycles?
Explore the S16Q-SDQCL11 (Left Hand) Tool Holder →3. Technical Specifications & Metric-to-Imperial Reference
| Technical Parameter | Metric Value (S16Q-SDQCR11) | Imperial / Inch Equivalent Code |
|---|---|---|
| Shank Diameter | 16 mm | ~ 0.6299 inches (Fits standard 5/8" boring blocks or sleeves) |
| Overall Length | 180 mm | ~ 7.0866 inches |
| Minimum Bore Clearance | 20 mm | ~ 0.7874 inches |
| Matching Insert Standard | DCMT 11T304 / DCMT 11T308 / DCMT 11T312 | DCMT 32.51 / DCMT 32.52 / DCMT 32.53 |
| Mounting Torx Hardware | M4 x 10mm Insert Screw + T15 Torx Driver | High-Tensile M4 Screw + T15 Flag Key |
Optimal Industrial Cutting Speed & Feed Rate Benchmark
| ISO Workpiece Material Classification | Recommended Cutting Speed (Vc) | Feed Rate Target Range (f) |
|---|---|---|
| Carbon / Alloy Steels (P-Class) | 120 - 210 m/min | 0.06 - 0.20 mm/rev |
| Stainless Steel Varieties (M-Class) | 80 - 150 m/min | 0.05 - 0.16 mm/rev |
| Cast Iron & Nodular Matrix (K-Class) | 90 - 180 m/min | 0.06 - 0.22 mm/rev |
4. Product Application Scenarios
- Precision Small-Bore Profiling: Fits deep within tight internal chambers down to a minimum clearance of 20mm, providing clean tool paths.
- Internal Shoulder Copying: The distinctive 107.5° relief profile provides generous side-clearance when executing standard or complex continuous contour cuts.
- Semi-Finish Internal Grooving Cleanouts: Excellent for removing material lips and creating smooth transitions inside valves, aerospace hardware, and custom fasteners.
5. Equipment & Tooling Compatibility
- CNC Swiss-Types & Compact Turrets: Mounts directly into standard 16mm turret blocks, specialized multi-tool stations, or universal reduction blocks.
- Conventional Engine Lathe Posts: Fully compatible with small tool posts using appropriate V-groove or sleeve blocks.
- Universal 11mm Pocket Geometry: Secure seat configuration seamlessly accepts all standard 55-degree positive rhombic DCMT 11T3-- indexable carbide inserts.
6. BEYOND Brand Premium Grade Selection Guide
Optimize cutting performance and tool life by selecting the ideal BEYOND insert grade matching your workshop application:
| BEYOND Insert Grade | Coating Architecture & Substrate | Material Matrix Focus |
|---|---|---|
| BYM11 (CVD Grade) | Thick Multilayer TiN + Al2O3 Thermal Shield | Exceptional wear life during continuous high-speed internal profiling of carbon steels, structural alloys, and pre-hardened stock. |
| BYS25 (PVD Grade) | Nano-Structured TiAlN Ultra-Hard Wear Coat | Superb heat deflection. Ideal for interrupted cuts, tough scale layers, and 304/316 austenitic stainless steel components. |
| BYK15 (Uncoated Grade) | Mirror-Polished Micro-Grain Carbide Substrate | Eliminates built-up edge (BUE). Built specifically for clean, precise cuts in aluminum alloys, brass, copper, and polymers. |
7. Why Choose BEYOND CNC Tools?
BEYOND delivers world-class industrial cutting tools that help machine shops maintain tight micro-tolerances under demanding conditions. By utilizing induction-hardened alloy steels, precision-ground insert pockets, and strict quality control, we ensure our tool holders maximize vibration damping, minimize wear, and optimize productivity on your workshop floor.
Global Machinist Feedback
Robert H. — United States
"Surprisingly rigid for a 16mm steel bar. Ran it through 4140 steel at a 70mm extension, and the surface finish came out clean with zero chatter."
Dieter M. — Germany
"Die Bohrungsqualität ist exzellent. The 107.5-degree clearance allows for smooth profiling into compact internal radii."
Pietro V. — Italy
"Ottimo prodotto. Clears chips efficiently from 22mm holes under strong oil-fed coolant flow."
Yukihiro T. — Japan
"High precision manufacturing. The DCMT11T3 insert seats perfectly without shifting under high feed rates."
Thomas B. — United Kingdom
"Highly accurate tool holder. Maintains tight tolerances across continuous medium-batch CNC runs."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What does the 'Q' lead angle designate, and how does it impact machining paths?
A1: The 'Q' indicates a 107.5-degree cutting edge approach angle. This specialized geometry provides unique clearance for internal profiling paths, undercut profiling, and directional plunging where standard 93-degree bars might rub against the face or cavity profile.
Q2: What is the recommended maximum overhang ratio for this steel boring bar?
A2: For solid steel boring bars like the S16Q-SDQCR11, the standard industrial benchmark is a maximum overhang ratio of 3x to 4x the shank diameter (approx. 48mm to 64mm from the holder face) to maintain optimum surface finishes and prevent chatter. Beyond 4x, cutting speeds should be adjusted downward.
Q3: Can I run standard DCMT 0702 inserts inside this pocket seat?
A3: No. The pocket seat on this bar is strictly ground for DCMT 11T3-- style inserts (11mm edge size, ~3.97mm thickness). Smaller 7mm inserts will not seat or lock safely into the structural walls of the pocket.
9. Technical Maintenance & Diagnostic Guidelines
Equivalent Industry Models
Fully interchangeable with universal ISO metric standard catalog designation code S16Q-SDQCR11. Serves as a direct high-rigidity drop-in alternative for any global 16mm Right-Hand boring tool system designed around 55-degree positive diamond profiles.
Troubleshooting Tips
Micro-Vibration / Chatter: Ensure the clamping length inside your turret sleeve block is at least 3x the diameter (~48mm). If chatter surfaces during long extensions, decrease the insert nose radius (e.g., from 0.8mm down to 0.4mm) to cut down radial forces.
Pocket Seat Care: Always clear microscopic debris using compressed air before indexing the insert. Torque the heavy-duty M4 screw to 3.0-3.5 Nm.
Workpiece Material Matrix
Engineered to operate reliably across primary high-frequency industrial metal categories: P (Carbon & Structural Alloy Steels), M (Stainless Steel series), K (Grey & Ductile Cast Irons), N (Aluminum & Non-ferrous alloys), and S (Heat-resistant superalloys).
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.