BEYOND S12M-STUPR09 Right Hand Internal Turning Tool Holder | 12mm CNC Boring Bar
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BEYOND S12M-STUPR09 Right-Hand Internal Turning Tool Holder – High-Rigidity CNC Boring Bar
1. Product Overview
"Which internal boring bar configuration guarantees maximum stability and optimal chip breaking in a 16mm minimum bore diameter?"
The BEYOND S12M-STUPR09 is an industrial-grade, right-handed steel-shank internal turning tool holder precisely engineered for tight-aperture 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 micro internal profiling. Specifically engineered for TPMT 0902 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 inside small confined chambers.
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 S12M-STUPR09 standard international nomenclature rules:
| Parameter Dimension | Metric System Specification | Imperial Equivalent Measurement |
|---|---|---|
| Shank Diameter (d) | 12 mm | 0.4724 inches (Approx. 15/32") |
| Total Tool Length (L) | 150 mm | 5.9055 inches |
| Minimum Bore Diameter (D-min) | 16 mm | 0.6299 inches |
| Compatible Carbide Insert Layout | TPMT 0902 / TPMH 0902 | TPMT 1.8(1.5)1 / TPMT 1.8(1.5)2 |
| Clamping Screw Model Type | M2.2 x 5.0 | M2.2 x 0.19 inches |
| Torx Key Driver Wrench Size | T7 | T7 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) | 120 - 220 m/min (393 - 721 SFM) | 0.05 - 0.15 mm/rev (0.002 - 0.006 IPR) |
| Stainless Steel Matrix (304, 316, 410) | 90 - 140 m/min (295 - 459 SFM) | 0.04 - 0.10 mm/rev (0.0015 - 0.004 IPR) |
| Cast Iron Grades (GG20, GG25, GGG40) | 100 - 160 m/min (328 - 524 SFM) | 0.05 - 0.18 mm/rev (0.002 - 0.007 IPR) |
4. Product Application Scenarios
The intermediate 12mm right-handed geometry of the S12M-STUPR09 tool holder bridges the gap between micro-boring bars and heavy-duty tool blocks:
- Main-Spindle Internal Turning Operations: Essential for standard right-handed toolpaths on CNC turning centers where high dimensional repeatability is required.
- Precision Internal Step Boring: The precise 93-degree orientation delivers crisp square internal faces and clean blind hole bases without leaving steps.
- Small Valve & Port Machining: Ideal for machining internal hydraulic valve ports, manifold lines, and distribution sleeves with absolute dimensional repeat accuracy.
5. Compatibility & Equipment Interface
This 12mm round-shank boring bar fits seamlessly into standard CNC lathe turret blocks, Swiss-type gang tool posts, boring bar sleeves, or specialized reduction sleeves. It is fully compatible with precision micro-lathe and automated machine setups from major global brands (including Haas, Mazak, Doosan, Citizen, Tsugami, and Fanuc systems). Engineered for standard right-handed tool orientations running front internal turning cycles.
6. BEYOND Premium Substrate & Grade Selection Matrix
To maximize chip control and wear life, pair your S12M-STUPR09 boring bar with the corresponding BEYOND proprietary insert grade tailored to your target material:
- BYM11 Grade (PVD Nano-Coated): Exceptional thermal shock resistance. Keeps cutting edges sharp and prevents 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. Al2O3 + TiN layered 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 S12M-STUPR09 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:
We run this 12mm right-hand bar on our turning center for internal counterboring. Holds the TPMT 0902 inserts securely. No chatter lines visible even at 4xD overhang extensions.
Sehr solider Drehmeißel für Innenbearbeitung. Die Taschenpräzision für die TPMT-Platte ist hervorragend, was zu einer hohen Standzeit führt. Perfekt für CNC-Drehmaschinen.
Excellent tool body rigidity. The screw lock provides a lower profile than clamp styles, ensuring great clearance in small diameters. Fast shipping, great B2B support.
S12Mは12mmシャンクながら剛性が非常に高く、奥深い内径切削でもブレません。チップポケットの精度が高いため、刃先位置の再現性が抜群です。大変満足しています。
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.