BEYOND S32T-SDUCL11 Internal Boring Bar 32mm Shank CNC Lathe Turning Tool Holder Left Hand
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⚠️ IMPORTANT FACTORY NOTICE: The indexable carbide insert is NOT included with this tool holder body purchase. Product photography displaying an attached cutting insert is intended purely to illustrate spatial tool orientation, pocket seating, and application setups.
BEYOND S32T-SDUCL11 Heavy-Duty Internal Boring Bar & CNC Lathe Tool Holder
1. Product Overview
Engineers Search: "Which high-rigidity 32mm left-hand boring bar matches with DCMT11T3 positive rake inserts to prevent deep-hole chatter during CNC internal profiling?"
The BEYOND S32T-SDUCL11 is a heavy-duty, screw-on internal boring bar engineered for high-performance left-hand (L) CNC lathe operations, deep-cavity internal turning, and complex inner profiling. Built from premium-grade, vacuum-hardened alloy steel, the robust 32mm shank diameter provides maximum torsional stiffness to prevent structural deflection during deep-reach roughing and finishing passes. This industrial tool holder allows highly accurate tool paths inside medium-to-large bore openings down to a minimum clearance diameter of 40mm. It features a precision-machined 55 degree pocket geometry designed to lock DCMT 11T3-- indexable carbide inserts (such as DCMT 11T304 or DCMT 11T308) completely flush, eliminating pocket wear under severe metal-cutting forces.
When paired with indexable inserts engineered with a positive clearance rake and optimized chipbreaker configurations, this tooling setup ensures superior chip evacuation. The geometric chipbreaker mechanics break long, stringy alloy swarf into tightly curled, segmented chips. This prevents hazardous chip nesting inside deep blind cavities, protecting the machined surface from scratching and ensuring high-precision dimensional tolerances.
2. Product Core Features
- Vacuum-Hardened Alloy Body: Heat-treated to HRC 42-45 to provide superior dampening against micro-harmonics during long-overhang deep boring.
- Rigid 32mm Heavy-Duty Shank: Maximizes cross-sectional mass to withstand high radial forces during heavy metal removal rates (MRR).
- 93 Degree Dynamic Lead Cutting Angle: Advanced profiling geometry allows fluid back-boring and facing while seamlessly guiding chip paths away from the workpiece wall.
- Industrial Anti-Galling Black Coat: Premium chemical blackening provides excellent rust resistance and prevents hot chips from welding to the tool body.
Model Nomenclature Decoder: S32T-SDUCL11
Steel Shank Body
32mm Shank Dia.
300mm Total Length
Screw Clamping System
55 Degree Diamond Shape
93 Degree Clearance Angle
7 Degree Relief Angle
Left Hand Orientation
11mm Insert Edge Size
Looking for the Mirrored Right-Hand (R) Tool Holder Unit to Balance Your Lathe Turret?
Explore the S32T-SDUCR11 (Right Hand) Tool Holder →3. Technical Specifications & Dimension Comparison
| Technical Parameter | Metric Specification (S32T-SDUCL11) | Imperial / Inch Equivalent Value |
|---|---|---|
| Shank Diameter | 32 mm | ~ 1.2598 inches (Closest standard: 1-1/4 inch shank profile) |
| Overall Length | 300 mm | ~ 11.8110 inches |
| Minimum Bore Clearance | 40 mm | ~ 1.5748 inches |
| Matching Insert Standard | DCMT 11T304 / DCMT 11T308 Index | DCMT 32.51 / DCMT 32.52 equivalent classes |
| Mounting Hardware | M4.0 Insert Locking Screw + T15 Torx Wrench | M4.0 High-Tensile Screw + T15 Flag Key |
Optimal Industrial Cutting Speed & Feed Recommendation
| ISO Workpiece Material Classification | Cutting Speed Range (Vc) | Feed Rate per Revolution Target (f) |
|---|---|---|
| Carbon / Alloy Steels (P-Class) | 140 - 240 m/min | 0.08 - 0.25 mm/rev |
| Stainless Steel Varieties (M-Class) | 90 - 180 m/min | 0.06 - 0.20 mm/rev |
| Cast Iron & Nodular Matrix (K-Class) | 100 - 200 m/min | 0.08 - 0.28 mm/rev |
4. Product Application Scenarios
- Deep-Hole Heavy Internal Boring: The 300mm length body combined with a 32mm core makes it perfect for deep-pocket boring up to 120mm overhang extensions.
- Medium-to-Rough Machining Cycles: Specially built to handle aggressive depths of cut in tough industrial alloys without tool deflection.
- Internal Profiling & Copying: Optimized for cutting steps, tapers, and complex relief chambers inside hydraulic cylinders and heavy transmission gears.
5. Equipment & Tooling Compatibility
- Industrial CNC Turning Centers: Seamlessly mounts inside standard 32mm boring bar holders, turret blocks, or split sleeves.
- Heavy-Duty Conventional Lathes: Fully compatible with large quick-change quick-set tool posts or dedicated boring blocks.
- ISO Standard Insert Pocketing: Universally compatible with all international ISO-standard 55 degree positive DCMT 11T3-- style indexable carbide inserts.
6. BEYOND Brand Grade Optimization Guide
Match your machining operations with the perfect premium BEYOND indexable carbide insert grade to maximize tool life:
| BEYOND Insert Grade | Substrate & PVD/CVD Coating Architecture | Ideal Application Material Focus |
|---|---|---|
| BYM11 (CVD Grade) | Thick Multilayer TiN + Al2O3 Heat Shield | Engineered for high-sfm continuous cutting cycles in structural carbon steels, tool steels, and structural alloys. |
| BYS25 (PVD Grade) | Nano-Structured TiAlN Wear-Resistant Coat | High thermal defense profile. Ideal for interrupted cuts, hard crust layers, and 304/316 stainless steel grades. |
| BYK15 (Uncoated Grade) | Mirror-Polished Fine Grain Carbide Substrate | Prevents built-up edge (BUE). Built for high-speed turned paths in aluminum alloys, brass, and polymers. |
7. Why Choose BEYOND CNC Tools?
BEYOND supplies world-class, high-mass tooling solutions built to excel under extreme machining parameters. By applying precision induction hardening across our large-shank bars and maintaining strict quality control over our ground insert seats, we guarantee maximum component accuracy, lower cyclic vibration wear, and reduced downtime on your workshop floor.
Global Machinist Feedback
Marcus T. — United States
"Pure muscle. This 32mm bar handles 2.5mm depths of cut in 4140 steel without flinching. Absolute beast for our medium lathe setups."
Hans R. — Germany
"Ausgezeichnete Stabilitaet. We extend it to 110mm out of the turret sleeve and the internal finish is mirror-smooth. Highly recommended."
Giovanni P. — Italy
"Corpo barra molto pesante e rigido. Clears out deep curled chips effortlessly when flooded with high-pressure coolant lines."
Kenji S. — Japan
"For deep hole profiling, this 32mm body size works perfectly. Structural seating holds the DCMT 11T3 insert tightly."
Alexandre M. — France
"The M4 screw clamps down exceptionally hard. No insert indexing slip at all under high feed rates. Excellent performance value."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What is the maximum stable boring overhang ratio for this 32mm steel tool body?
A1: For standard high-tensile steel tool shanks, the recommended reliable overhang limit is up to 4x the shank diameter. For this 32mm bar, you can confidently bore up to an extended length of 128mm before requiring specialized anti-vibration sleeves.
Q2: Can I run DCMT 0702 series inserts inside this pocket seat?
A2: No. This pocket is ground precisely to match ISO DCMT 11T3-- inserts (11mm edge length). Smaller inserts will not align with the clamping profile and will shatter instantly under load.
Q3: What does the "T" length indicator signify on this model?
A3: Under standard ISO coding conventions, the letter "T" designates an overall tool length of 300mm. This provides ample gripping length inside the lathe turret blocks to handle heavy leverage forces.
9. Technical Maintenance & Diagnostic Guidelines
Equivalent Industry Models
Fully interchangeable with universal ISO metric standard catalog designation code S32T-SDUCL11. Serves as a high-strength drop-in replacement for any standard 32mm or 1-1/4 inch tool pocket configuration holding 55 degree positive diamond profiles.
Troubleshooting Tips
Workpiece Surface Scoring: Increase chip flow flushing by using internal coolant or step up feed rates slightly to trigger cleaner chip breaking operations.
Rapid Pocket Deflection: Inspect pocket seating for fine embedded debris. Clean and torque the high-tensile M4 screw to exactly 3.0-3.2 Nm for absolute rigidity.
Workpiece Material Matrix
Engineered to operate reliably across primary material categories: P (Alloy, Structural, Carbon Steels), M (Stainless Steel lines), K (Grey and Ductile Cast Irons), N (Aluminum and Non-ferrous lines), and S (High-temp heat-resistant alloys).
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.