BEYOND S25S-SDWCR11 Internal Boring Bar 25mm Shank CNC Turning Tool Holder
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✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
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✓ Technical Support: Need grade selection help? Contact Engineer
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
⚠️ OPERATIONAL NOTICE: The cutting insert is NOT included with this tool holder. Carbide inserts shown in product imagery are intended strictly for application setup and visual mapping.
BEYOND S25S-SDWCR11 Heavy-Duty Internal Boring Bar & CNC Lathe Tool Holder
1. Product Overview
Engineers Search: "Which rigid 25mm right-hand internal boring bar eliminates chatter during medium roughing and deep profiling with W-type inserts?"
The BEYOND S25S-SDWCR11 is a high-capacity, industrial-grade screw-on internal boring bar engineered for high-volume right-hand (R) CNC turning centers. Specifically designed to handle medium-to-large diameter ID boring, roughing, and heavy profiling, this tool holder features a reinforced pocket geometry that provides exceptional seating security for 80° trigon W-type indexable inserts (such as WNMG0604 / WD_1104). Machined from premium tempered alloy steel, the robust 25mm shank provides high torsional stiffness to absorb extreme cutting forces while maintaining an ideal chip clearance pathway inside deep bores.
2. Product Core Features
- Industrial-Grade Tool Steel Body: Heat-treated and hardened to HRC 42-45, ensuring excellent deflection resistance under aggressive depth of cut (DOC) loads.
- Anti-Vibration Performance: The heavy 25mm solid shank dampens micro-vibrations and harmonics, significantly extending insert edge life.
- 93° Dynamic Lead Geometry ($X$): Engineered for deep-pocket profiling, facilitating excellent chip breaking and seamless forward chip evacuation.
- Anti-Galling Chemical Treatment: Black oxide finish repels hot swarf nesting, prevents corrosion from high-pressure water-soluble coolants, and avoids thread seizure.
Model Nomenclature Decoder: S25S-SDWCR11
Steel Shank Body
25mm Shank Dia.
250mm Total Length
Screw Clamping System
55° Diamond clearance / W-insert alignment
80° Trigon Insert Fit
7° Relief Clearance
Right Hand Orientation
11mm Insert Edge Size
Looking for the Mirrored Left-Hand (L) Companion Unit for Your CNC Block?
Explore the S25S-SDWCL11 (Left Hand) Tool Holder →3. Technical Specifications & Dimension Comparison
| Technical Variable | Metric Model (S25S-SDWCR11) | Imperial / Inch Conversion Equivalence |
|---|---|---|
| Shank Diameter ($d$) | 25 mm | ~ 0.9842 inches (standard: 1" shank) |
| Overall Length ($L$) | 250 mm | ~ 9.8425 inches |
| Minimum Bore Clearance ($D_{min}$) | 32 mm | ~ 1.2598 inches |
| Matching Insert Index | WNMG 0604-- / WD_ 1104-- Series | WNMG 33- series / W-Trigon equivalent |
| Fasteners (Included) | M3.5 Structural Screw + T15 Torx Wrench | M3.5 Hardened Screw + T15 Structural Wrench |
Optimal Industrial Machining Parameters
| ISO Workpiece Material Group | Cutting Speed ($V_c$) Recommended | Feed Rate per Revolution ($f$) |
|---|---|---|
| Steel Alloys / Low Carbon (P-Class) | 130 - 220 m/min | 0.08 - 0.28 mm/rev |
| Stainless Steel Grades (M-Class) | 90 - 160 m/min | 0.06 - 0.20 mm/rev |
| Cast Iron / Nodular Iron (K-Class) | 100 - 190 m/min | 0.10 - 0.32 mm/rev |
4. Industrial Applications
Built for stable internal metal removal, the S25S-SDWCR11 excels in intermediate industrial settings:
- Internal Diameter Roughing: Engineered to maximize material removal rates (MRR) in medium structural cylinders, sleeves, and machine housings.
- Deep Chamber Profiling: Delivers extreme stiffness over significant cantilever extensions up to 100mm without introducing cutting surface chatter.
- Continuous Boring Operations: The combination of the high-mass 25mm body and rigid screw-on clamping handles uniform internal turning loops effortlessly.
5. Equipment & Tooling Compatibility
- CNC Turning Centers: Mounts natively into standard CNC turrets or driven tool blocks fitted with 25mm or 1" round block clamping options.
- Manual Lathes: Seamlessly drops into industrial quick-change tool blocks or traditional split sleeve boring posts.
- Universal Insert Standardization: Fully optimized to seat standard negative/positive 80° trigon WNMG 0604-- / WNMG 33-- or WD_ 1104-- inserts from all major verified tooling lines.
6. BEYOND Brand Grade Optimization Guide
Achieve superior tool economy and predictable cycle times by selecting the matching BEYOND insert formulation for your material matrix:
| BEYOND Insert Grade | Substrate Coating Treatment | Ideal Application Material Focus |
|---|---|---|
| BYM11 (CVD) | Thick Multilayer TiN + Al2O3 Shielding | Our primary grade for continuous high-speed roughing and semi-finishing of carbon alloys and die steels. |
| BYS25 (PVD) | Nano-Structured TiAlN Ultra-Hard Finish | Highly resilient against thermal shock; engineered for heavy interrupted cuts and 300/400 series stainless steels. |
| BYK15 (Uncoated) | Mirror-Polished Ultra-Micro Grain Substrate | Designed for processing aluminum structures, copper bars, and non-ferrous compositions requiring sharp cutting lines. |
7. Why Choose BEYOND CNC Tools?
BEYOND precision manufactures high-rigidity tool holders for automated production plants. By managing tight structural tolerances and using premium structural steel grades, we ensure that every tool block minimizes downtime, prevents dimensional variance, and keeps your cost-per-part low.
Global Machinist Feedback
Mark R. — United States
"Outstanding rigidity for a 25mm steel bar. Ran clean internal profiling on 4140 pre-hardened stock without any singing or deflection. Pocket seats perfectly."
Klaus M. — Germany
"Die Oberflächengüte ist exzellent. Precise tolerances on the clamp index make turning insert replacement rapid and uniform across production shifts."
Giovanni B. — Italy
"Ottimo rapporto qualità-prezzo. Stays highly rigid under high pressure water-soluble coolant. Fast shipping."
Yukihiro S. — Japan
"ネジの精度が非常に高い。Clamping screw locks flush every single time. Prevents chip nesting on deep bore setups."
Graeme T. — Australia
"Solidly built bar. The black oxide finish stands up well against ongoing chip scrubbing in blind holes."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What is the absolute maximum safe boring depth for this solid steel 25mm bar?
A1: For standard solid steel alloy bodies, the recommended maximum structural limit for projection is **3x to 4x the shank diameter**. For this 25mm bar, your optimal rigid extension target falls between **75mm and 100mm**. Exceeding 4x may cause harmonics and require a reduction in feed rate ($f$).
Q2: Can I mount standard TNMG inserts into the pocket of the S25S-SDWCR11?
A2: **No.** TNMG inserts utilize a 60° triangular layout, whereas this pocket is uniquely ground to support the 80° trigon structural angle of **WNMG 0604-- / WD_ 1104--** configurations. Attempting to fit other geometries will ruin the seat precision.
Q3: When should I choose this Right-Hand (R) bar instead of the Left-Hand (L) version?
A3: Right-Hand bars are standard for traditional forward spindle setups ($M03$) when machining internally toward the headstock on standard configurations, ensuring the cutting edge faces upward to meet tool post clearances.
9. Technical Maintenance & Diagnostic Guidelines
Equivalent Industry Models
Interchangeable with global industrial metrics standard coding **S25S-SDWCR11**. Drop-in replacement for standard 1-inch tool holders using 80-degree clearance index layouts.
Troubleshooting Tips
Micro-Chatter at Max Extension: Slightly decrease cutting speed ($V_c$) and increase your feed rate ($f$) to load the bar's structural profile and minimize vibration.
Rapid Pocket Erosion: Routinely check that the clamping screw is torqued evenly to 2.5 Nm to prevent micro-rotation during heavy roughing.
Workpiece Material Matrix
Fully optimized across standard groups: **P** (Alloy & Structural Steels), **M** (Stainless Steel alloys), **K** (Grey & Ductile Cast Iron), **N** (Aluminum/Copper Non-ferrous series), and **S** (High-temp superalloys).
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.