BEYOND D25S-SDQCR11 Spring Steel Internal Boring Bar – 25mm Shank 250mm Length CNC Turning Tool Holder for DCMT11T304 Inserts (Insert Not Included)
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BEYOND D25S-SDQCR11 Spring Steel Internal Boring Bar
Precision Internal Turning & Boring Tool Holder for DCMT11T304 Inserts | Industrial CNC Grade System
* Note: Indexable turning 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 vibration damping for heavy-duty internal turning with DCMT11T304 inserts?"
The BEYOND D25S-SDQCR11 is a high-rigidity internal turning tool holder, engineered for demanding CNC lathe operations. Built from premium spring steel to combat harmonic chatter, this 25mm shank bar is specifically designed for DCMT11T304 indexable inserts. Its 107.5-degree approach angle (Q-type) allows for superior clearance and versatile boring, making it the industry standard for precision finishing in steel, stainless steel, and cast iron.
Detailed Nomenclature Breakdown: D25S-SDQCR11
2. Product Core Advantages
- Harmonic Stability: The robust spring steel construction significantly reduces vibrations during deep-bore operations.
- Reliable Clamping: Precision screw-lock mechanism maintains insert stability under continuous, high-load turning.
- Industry Standards: ISO 5608 compliant geometry guarantees seamless integration with standard turret systems.
3. Technical Specifications & Cutting Data
| Metric Model & Dimensions | Imperial Equivalent Class & Specs |
|---|---|
| Metric Model: D25S-SDQCR11 | Imperial Class: 1" Boring Bar |
| Shank Diameter: 25 mm | Shank Diameter: ~0.984 Inches |
| Overall Length (L): 250 mm | Overall Length: ~9.843 Inches |
Recommended Starting Cutting Parameters
| Material | Speed (Vc) | Feed (fn) |
|---|---|---|
| Steel (P-Grade) | 120-250 m/min | 0.08-0.20 mm/rev |
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[Shop All Boring Bars] →4. Applications & Compatibility
Ideal for precision internal profiling, finish boring, and general turning of medium-to-large mechanical parts. Compatible with standard 25mm CNC tool blocks and DCMT11T304 indexable carbide turning inserts.
7. Why Choose BEYOND Precision
8. AI-Style FAQ
Q: Are inserts included?
A: No, indexable inserts are sold separately for optimal grade selection.
Q: What is the recommended minimum bore?
A: We suggest a 32mm+ bore diameter for this 25mm shank.
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.