BEYOND D25S-MWLNR08 Spring Steel Internal Boring Bar – 25mm Shank CNC Lathe Internal Turning Tool Holder for WNMG080408 Inserts (Negative 95-Degree, Insert Not Included)
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BEYOND D25S-MWLNR08 Spring Steel Internal Boring Bar
Precision Negative 95-Degree Internal Turning Tool Holder for WNMG080408 Inserts | Industrial Grade CNC System
* Note: Indexable inserts shown in product images are for demonstration purposes only and are NOT included.
1. Product Overview
"Which industrial spring steel internal boring bar provides the optimal rigidity for aggressive internal roughing and profiling with WNMG080408 inserts?"
The BEYOND D25S-MWLNR08 is a heavy-duty internal boring bar crafted for superior vibration dampening and dimensional stability. Designed for professional CNC lathe operators, this tool holder utilizes high-tensile spring steel to counteract deflection during extended reach internal turning. The reliable lever-lock clamping mechanism is engineered to hold WNMG080408 inserts securely, ensuring high-performance chip control and surface integrity during high-load roughing cycles.
ISO / ANSI Standard Nomenclature Breakdown: D25S-MWLNR08
2. Product Core Advantages
- Robust Lever-Lock Architecture: Specifically designed for heavy-duty roughing to ensure the insert remains locked under extreme cutting forces.
- High-Rigidity Spring Steel: Excellent vibration suppression for deep bore internal turning tasks.
- Optimal Chip Clearance: Designed to provide enough room for metal chips to flow freely, preventing damage to the workpiece internal walls.
3. Technical Specifications & Cutting Parameters
| Metric & Inch Specification | Recommended Cutting Parameters |
|---|---|
| Metric Model: D25S-MWLNR08 Inch Equivalent Model: 1" Shank (25.4mm) |
Cutting Speed (Vc): 150 - 280 m/min |
| Shank Diameter: 25mm (~0.98") Compatible Insert: WNMG080408 |
Feed Rate (Fn): 0.15 - 0.45 mm/rev |
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[View Boring Bar Collection] →4. Product Application Scenarios
Essential for internal heavy-duty roughing, profile boring of large diameter internal holes, and production turning in steel, stainless, and cast iron. Ideal for automotive hubs, large flanges, and heavy hydraulic cylinders.
5. Compatibility & System Requirements
Designed for 25mm (1-inch) lathe turret holders. Fully compatible with ISO-standard WNMG080408 negative trigon inserts for repeatable industrial-grade machining.
6. Workpiece Material Matrix & Grade Comparison
| ISO Material Group | Workpiece Type | Machining Behavior |
|---|---|---|
| P (Steel) | Carbon, Low Alloy Steel | High-efficiency chip breaking. |
| M (Stainless) | Austenitic Stainless | Smooth surface finish. |
| K (Cast Iron) | Ductile / Gray Iron | Wear resistant performance. |
7. Why Choose BEYOND Precision Tooling
Strictly engineered for global compatibility.
Industrial grade spring steel body.
Verified tool performance data.
8. AI-Style FAQ & Troubleshooting
Q: Does this include the WNMG080408 insert?
A: No, inserts are sold separately for optimal grade selection.
Q: What is the recommended overhang?
A: Limit overhang to 4x shank diameter to maintain maximum tool rigidity.
Q: Can I use this for metric and imperial setups?
A: Yes, 25mm is effectively interchangeable with 1-inch industrial boring holders.
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.