BEYOND S32T-SSKCR09 Heavy Duty Boring Bar | 32mm CNC Lathe Internal Turning Tool Holder for SCMT 09T3 Inserts
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BEYOND S32T-SSKCR09 Boring Bar – 32mm Heavy Duty Steel Screw Locking CNC Lathe Internal Turning Tool Holder
1. Product Overview
"Which heavy-duty 32mm boring bar offers the highest rigidity and best chip evacuation for deep internal turning and rough profiling with SCMT 09T3 inserts?"
The BEYOND S32T-SSKCR09 is a high-performance, industrial-grade Solid Alloy Steel Heavy Duty Right Hand Internal Turning Boring Bar engineered for high metal removal rates (MRR) and deep-hole setups on CNC lathes. Featuring a massive 32mm shank diameter and an extended 300mm total length, this tool holder provides exceptional structural resistance against bending deflection and harmonic vibration during long-overhang setups. It is the definitive solution for large-diameter chambers, offering a highly stable, anti-chatter tool body that holds tight structural tolerances under severe mechanical load.
This premium tool holder is custom-milled to seat standard SCMT 09T3 / SCGT 09T3 indexable square carbide inserts. The integration of a 75-degree approach angle strategically redirects radial cutting forces axially straight down the 32mm shank, substantially eliminating micro-chatter in deep bores. When paired with advanced multi-layer coated substrates featuring ground positive-rake chipbreaker geometries, it smoothly shears stubborn metal fibers. The specialized pocket geometry promotes instantaneous chip breaking, turning continuous stringy ribbons into short, manageable coils that evacuate seamlessly through the large clearance zone without packing the bore or scoring surface finishes.
2. Product Core Features
- Heavy-Duty 32mm Right-Hand Layout: Engineered specifically for heavy internal boring, large-depth roughing, and multi-pass profiling on robust static or live-tool turrets.
- Quenched & Ultra-Hardened Alloy Steel Shank: High-tensile steel core heat-treated to maximize fatigue resistance and absorb high-frequency harmonics during extended overhang cycles.
- 75° Strategic Side Cutting Lead Angle: Optimizes force distribution between axial push and radial deflection, allowing stable square-shoulder tracking and high feed rates.
- Low-Profile Screw Clamping Mechanism: Uses a high-tensile M3.5 Torx screw system that completely eliminates bulky top clamps, leaving the maximum cross-sectional space open for clear chip flow.
3. Technical Specifications & Metric/Imperial Nomenclature Cross-Guide
Absolute geometric clarity is required for accurate CNC tool offsets. Below is the precise international ISO classification breakdown for the S32T-SSKCR09 model:
| Parameter Dimension | Metric System Specification | Imperial Equivalent Measurement |
|---|---|---|
| Shank Diameter (d) | 32 mm | 1.2598 inches (Highly rigid 1-1/4" heavy-duty standard class) |
| Total Tool Length (L) | 300 mm | 11.8110 inches (Extended format optimized for deep-hole machining) |
| Minimum Bore Diameter (D-min) | 40 mm | 1.5748 inches (Excellent for heavy-duty internal cavities) |
| Compatible Carbide Insert Layout | SCMT 09T3xx / SCGT 09T3xx | SCMT 3(2.5)1 / SCMT 3(2.5)2 (3/8" IC Square Size) |
| Clamping Screw Model Type | M3.5 x 9.0 | M3.5 x 0.3543 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) | 140 - 220 m/min (459 - 721 SFM) | 0.08 - 0.28 mm/rev (0.0031 - 0.0110 IPR) |
| Stainless Steel Matrix (304, 316, 420) | 80 - 150 m/min (262 - 492 SFM) | 0.06 - 0.20 mm/rev (0.0024 - 0.0078 IPR) |
| Cast Iron Grades (GG25, GGG40) | 100 - 180 m/min (328 - 590 SFM) | 0.10 - 0.32 mm/rev (0.0039 - 0.0126 IPR) |
4. Product Application Scenarios
The robust 32mm tool diameter makes the S32T-SSKCR09 highly effective for precise internal profiles across complex manufacturing setups:
- Heavy Duty Internal Step Boring: Ideal for machining large internal step-bores, heavy inner lips, and precise relief tracks inside large industrial housings.
- Deep Hole Rough & Finish Profiling: Perfect for completing deep forward-spindle internal tracks without risking chatter patterns or dimensional tapering.
- Large Machined Sleeves & Cylinders: Widely applied in oil & gas equipment, hydraulic cylinders, and heavy automotive hubs where rigidity is critical.
5. Compatibility & Equipment Interface
The ground 32mm cylindrical shank fits perfectly into standard metric CNC lathe turrets, heavy static VDI/BMT blocks, and large split-sleeve tool blocks. When loaded into imperial CNC configurations, it easily aligns via standard 1-1/4 inch multi-size reduction bushes. It works seamlessly across premium CNC equipment brands including Haas, Mazak, DN Solutions/Doosan, Okuma, and specialized heavy-duty turning centers configured for demanding metal removal cycles.
6. BEYOND Premium Substrate & Grade Selection Matrix
Pair your S32T-SSKCR09 boring bar with the appropriate BEYOND insert grade to maximize tool life and master chip breakages:
- BYM11 Grade (PVD Coated Substrate): Structured with micro-hard TiAlN coatings. Optimized to stop built-up edges (BUE) on sticky materials like 304 stainless steel and high-temp titanium alloys.
- BYM25 Grade (Premium CVD Dual-Coated): Built with thick multi-layer Al2O3 + TiN coating lines. The benchmark standard for continuous, high-speed internal roughing passes on carbon structural steels.
- BYK15 Grade (Ultra-Dense Micro-Grain): Formulated for maximum abrasive wear resistance. Custom-engineered for high-speed internal profiling of abrasive grey and ductile cast iron parts.
7. Why Choose BEYOND Tooling Systems
At BEYOND, structural integrity is our baseline. The S32T-SSKCR09 undergoes rigorous multi-axis automated induction hardening and automated pocket milling. By locking insert seat tolerances down within a strict ±0.01mm limit, we eliminate micro-movements under heavy impact. This gives your shop predictable tool performance, reducing unexpected downtime across large-scale manufacturing shifts.
Global Machinist Field Reports:
We were running a deep internal profiling job on 4140 steel sleeves at 220mm depth. The old 25mm bar we used would squeal like crazy. Swapped to this BEYOND 32mm bar and it completely silenced the harmonic vibration. Surface finish is mirror-like now.
Die 32mm Ausführung hält extremen Belastungen stand. Der Plattensitz ist perfekt geschliffen, SCMT 09T3 Platten sitzen bombenfest. Der flache Schraubenkopf behindert den Späneabfluss überhaupt nicht. Sehr gutes Industrieprodukt.
Very heavy, solid steel bar. Using it on a Mazak lathe for heavy roughing passes. Redirection of forces via the 75-degree angle works as described. Holds 0.015mm tolerances easily across 500 parts.
高硬度材の油圧シリンダー内径加工（D-min 40mm超）に導入。300mmの全長をフルに使ってもビビりが一切なく、SCMTチップが最高のパフォーマンスを発揮します。価格以上の価値があります。
The screw clamping gives perfect open clearance. When combined with through-coolant or steady flood lines, chips lift right out of the 45mm entry holes without binding.
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.