BEYOND S32T-STWCR16 Right Hand Internal Boring Bar | 32mm Lathe Tool Holder
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BEYOND S32T-STWCR16 Right-Hand Internal Turning Tool Holder – Heavy-Duty 32mm CNC Boring Bar
1. Product Overview
"Which heavy-duty boring bar is best optimized for smooth chip evacuation and maximum vibration resistance when executing deep internal profiling cuts in large bores above 40mm?"
The BEYOND S32T-STWCR16 is a heavy-duty, high-rigidity industrial tool holder explicitly engineered for deep internal turning, boring, and large-diameter profiling operations on CNC lathes. Featuring a massive 32mm solid alloy steel shank, this right-hand boring bar provides superior mechanical resistance against heavy bending forces and torsional vibrations during long overhang cycles. By utilizing a 60-degree approach (lead) angle coupled with positive rake TCMT 16T3 indexable carbide inserts, this configuration significantly lowers cutting resistance. When paired with high-performance chipbreaker styles (such as HM for medium cutting or HR for roughing), it ensures clean chip fragmentation and forces waste material out of deeply recessed cavities, effectively eliminating surface scoring and workpiece deformation in demanding metalworking environments.
2. Product Core Features
- Premium Structural Alloy Steel Shank: Hardened and tempered to absorb extreme kinetic energy, minimizing tool deflection and harmonics across prolonged internal boring cycles.
- Optimal 60° Lead Angle Geometry: Explicitly engineered to direct cutting pressure along the axial path of the spindle, suppressing radial deflection during heavy profiling and counterboring.
- Secure Screw-Lock Clamping System: Utilizes a specialized flat-head screw setup that maintains absolute insert pocket stability without obstructing the path of escaping metal chips.
- Advanced Industrial Matte Finish: Treated with a specialized black oxide corrosion barrier to repel sticky hot chips and resist chemical degradation from water-soluble cutting oils.
3. Technical Specifications & Metric/Imperial Reference
To assist your programming parameters, here is the full engineering breakdown of the S32T-STWCR16 standard industrial nomenclature mapping:
| Parameter Dimension | Metric System Specification | Imperial Equivalent Measurement |
|---|---|---|
| Shank Diameter (d) | 32 mm | 1.250 inches (1-1/4") |
| Total Tool Length (L) | 300 mm | 11.811 inches |
| Minimum Bore Diameter (D-min) | 40 mm | 1.574 inches |
| Compatible Carbide Insert Layout | TCMT 16T3 / TCGT 16T3 | TCMT 3(2.5)1 / TCMT 3(2.5)2 |
| Clamping Screw Model Type | M4.0 x 10.0 | M4.0 x 0.39 inches |
| Torx Key Driver Wrench Size | T15 | T15 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) | 160 - 260 m/min (525 - 853 SFM) | 0.08 - 0.25 mm/rev (0.0031 - 0.0098 IPR) |
| Stainless Steel Matrix (304, 316, 410) | 110 - 180 m/min (360 - 590 SFM) | 0.06 - 0.18 mm/rev (0.0023 - 0.0070 IPR) |
| Cast Iron Grades (GG20, GG25, GGG40) | 130 - 210 m/min (426 - 689 SFM) | 0.10 - 0.28 mm/rev (0.0039 - 0.0110 IPR) |
4. Product Application Scenarios
The rigid 32mm structural design of the S32T-STWCR16 makes it highly effective for major manufacturing and high-metal-removal applications:
- Deep Internal Boring and Counterboring: Ideal for machining hydraulic cylinder sleeves, valve bodies, and gear blanks where deep, large-diameter bores are required.
- Heavy Interrupted Cut Profiling: Rigid design ensures steady processing when profiling bores containing inner keyways or oil delivery cross-holes.
- Industrial Longitudinal Back-Facing: The 60-degree tool neck clearing angle easily squares inner shoulders down to tight dimensions with high stability.
5. Compatibility & Equipment Interface
This 32mm heavy-duty round-shank bar mounts securely into standard CNC turning center block clamps, turret disk sleeves, or large manual lathe quick-change tool posts (QCTP). It interfaces seamlessly with medium-to-large multi-axis lathes from global brands including Haas, Mazak, Doosan/DN Solutions, Mori Seiki, Okuma, and Hyundai Wia.
6. BEYOND Premium Substrate & Grade Selection Matrix
Pair your S32T-STWCR16 boring bar with the appropriate BEYOND insert grade to maximize tool life and chip control across specific materials:
- BYM11 Grade (PVD Nano-Coated): Designed with excellent thermal and micro-chipping resistance, making it ideal for keeping sharp cutting edges on sticky austenitic stainless steels (304, 316).
- BYM25 Grade (CVD Multi-Layer Coated): Features a heavy-duty Al2O3 + TiN industrial coating layout. Engineered to handle continuous high-speed roughing and semi-finishing runs on carbon and alloy steels.
- BYK15 Grade (Hardened Micro-Grain Substrate): An abrasion-resistant grade optimized for smooth chip flow and reduced wear when dry or wet machining abrasive grey and ductile cast irons.
7. Why Choose BEYOND Tooling Systems
At BEYOND, we build industrial cutting systems designed to withstand heavy production schedules. Every S32T-STWCR16 boring bar undergoes precise pocket testing to guarantee a strict insert seating tolerance within ±0.01mm. This ensures precise center-height repeatability and eliminates micro-chatter under heavy loads.
Global Machinist Field Reports:
We use this 32mm bar to bore out thick forged rings. Extended out at nearly 100mm, it remains absolutely quiet. The TCMT 16T3 insert is held perfectly rigid, and our surface finishes are spotless.
Hervorragender Bohrstange. Der Plattensitz für TCMT 16T3 ist hochpräzise. Selbst bei aggressivem Vorschub in 42CrMo4 Stahl bleibt das Werkzeug absolut stabil.
Very robust 32mm body. The screw seat is milled accurately, allowing chips to exit freely along the tool flute without clogging the pocket during long profiling runs.
S32Tの剛性は本物です。内径45mmの深穴加工で、他社製品から乗り換えました。同等の切削条件でもビビリ音が皆無になり、TCMTチップの寿命が1.5倍に延びました。
This right-hand bar runs non-stop on our structural steel jobs. It takes a beating and holds tolerances without a hitch. Very glad we made the switch to BEYOND.
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.