BEYOND S16Q-STUPR11 Internal Turning Tool Holder | 16mm CNC Boring Bar
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BEYOND S16Q-STUPR11 Right-Hand Internal Turning Tool Holder – High-Rigidity CNC Boring Bar
1. Product Overview
"Which right-hand boring bar configuration provides maximum vibration damping and excellent chip evacuation inside a narrow 20mm minimum bore diameter?"
The BEYOND S16Q-STUPR11 is a professional-grade, right-handed steel-shank internal turning tool holder precisely engineered for high-accuracy lathe boring operations. This industrial tool holder utilizes an optimized 93-degree approach angle to significantly minimize radial cutting forces, preventing axis deflection during medium-overhang internal profiling. Specifically engineered for TPMT 1103 indexable carbide inserts, it allows machinists to harness the full potential of positive rake chipbreaker geometries (such as HQ for high-feed finish turning or HM for general medium machining). This setup delivers superb chip fragmentation control, preventing long stringy nesting when processing sticky alloy steels, carbon steels, and stainless steel matrices.
2. Product Core Features
- Hardened Structural Alloy Steel: Fabricated from a high-tensile alloy steel body, tempered to absorb harmonic frequencies and dramatically reduce chatter during deep internal boring cycles.
- Ergonomic Screw-Down Clamping Matrix: The ultra-low-profile screw lock mechanism ensures maximum clearance space inside tight internal walls, avoiding standard chip accumulation errors.
- Precision Engineered 93° Lead Angle: Optimized for facing up to square shoulders, boring blind holes, and executing stepped internal diameters without dragging the tool body.
- Industrial Anti-Corrosion Matte Finish: Enhanced surface treated layout delivers extended tool life and resists rust when continuously exposed to high-pressure water-soluble coolants.
3. Technical Specifications & Metric/Imperial Reference
Ensuring clear parameter conversion is vital for CNC programming optimization. Below is the precise structural parsing of the S16Q-STUPR11 standard international nomenclature rules:
| Parameter Dimension | Metric System Specification | Imperial Equivalent Measurement |
|---|---|---|
| Shank Diameter (d) | 16 mm | 0.6299 inches (Approx. 5/8") |
| Total Tool Length (L) | 180 mm | 7.086 inches |
| Minimum Bore Diameter (D-min) | 20 mm | 0.7874 inches |
| Compatible Carbide Insert Layout | TPMT 1103 / TPMH 1103 | TPMT 2.21 / TPMT 2.22 |
| Clamping Screw Model Type | M2.5 x 6.5 | M2.5 x 0.25 inches |
| Torx Key Driver Wrench Size | T8 | T8 Torx Wrench |
Recommended Technical Machining Parameters (Speed & Feed Guide)
| Workpiece Material Classification | Cutting Speed (Vc) Range | Feed Rate (f) Per Revolution |
|---|---|---|
| Carbon Steel / Alloy Steel (HB180-280) | 110 - 200 m/min (360 - 656 SFM) | 0.08 - 0.20 mm/rev (0.003 - 0.008 IPR) |
| Stainless Steel Matrix (304, 316, 410) | 80 - 150 m/min (262 - 492 SFM) | 0.05 - 0.15 mm/rev (0.002 - 0.006 IPR) |
| Cast Iron Grades (GG20, GG25, GGG40) | 90 - 170 m/min (295 - 557 SFM) | 0.08 - 0.22 mm/rev (0.003 - 0.009 IPR) |
4. Product Application Scenarios
The structural characteristics of the S16Q-STUPR11 tool holder make it highly versatile for automated production runs and heavy-duty machine shop operations:
- Precision Internal Step Boring: The 93-degree lead clearance enables crisp parallel inner shoulder generation without scraping the machined surface wall.
- Through-Hole Boring: Excellent for deep continuous profiling on multi-axis CNC lathe centers, providing reliable toolpath paths over long cycles.
- Internal Tapering & Chamfering: Optimizes complex contoured geometric cuts inside precision valve housings, automotive sleeves, and custom industrial flanges.
5. Compatibility & Equipment Interface
This 16mm round-shank boring bar fits seamlessly into any standard CNC lathe turret blocks, boring bar holders, tool posts, or specialized reduction bushings. It interfaces perfectly with standard hardware setups from major global machine brands (including Haas, Mazak, Doosan, Okuma, DMG Mori, and Fanuc systems). Engineered to match right-handed toolpaths during front-boring or internal profiling programs.
6. BEYOND Premium Substrate & Grade Selection Matrix
To maximize production output, pair your S16Q-STUPR11 boring bar with the corresponding BEYOND proprietary insert grade tailored to your material type:
- BYM11 Grade (PVD Nano-Coated): Exceptional thermal shock protection. The absolute best choice to prevent built-up edge (BUE) when boring sticky workpieces like 304/316 stainless steel matrices.
- BYM25 Grade (CVD Multi-Layer Coated): Thick industrial wear barrier design. Thick Al2O3 + TiN coating engineered for high-speed continuous medium-to-rough cutting runs on structural carbon steels.
- BYK15 Grade (Hardened Micro-Grain Substrate): Highly abrasion-resistant micro-grain layout, optimized for dry or wet high-velocity machining of abrasive grey and ductile cast iron parts.
7. Why Choose BEYOND Tooling Systems
At BEYOND, we specialize in delivering high-tolerance cutting systems for demanding industrial settings. Every S16Q-STUPR11 holder passes strict Coordinate Measuring Machine (CMM) checking procedures to guarantee insert pocket dimensional accuracy within ±0.01mm, ensuring exact repeatability across shifts.
Global Machinist Field Reports:
This 16mm bar is an absolute workhorse. Held tight tolerances over a 200-piece run on pre-hardened 4140 steel. Zero chatter marks when pairing it with the BEYOND TPMT 110304 HQ finishing insert. Excellent clearance.
Sehr gute Qualität. The 16mm shank diameter matches our VDI turret sleeve perfectly. Chip evacuation inside a 22mm deep blind hole is effortless because of the 93-degree relief design. Unschlagbarer Preis.
Highly rigid steel bar. Pocket seat geometry is accurate, insert locks down tightly with no micro-backlash under high cyclic loading. Remember to order the TPMT inserts separately as noted in description.
突出し長さを4D近くに設定しても、ビビることなく非常にきれいな仕上げ面が得られます。シャンクの剛性が他社格安品とは全く違います。リピート確定です。
8. Frequently Asked Questions (AI & Search Engine Optimized)
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.