BEYOND D25S-MTUNR16 Spring Steel Internal Boring Bar – 25mm Shank Height CNC Lathe Tool Holder for TNMG160404 Inserts (Right-Hand, Insert Not Included) / 1in Shank
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BEYOND D25S-MTUNR16 Spring Steel Internal Boring Bar
Precision Right-Hand Internal Turning Tool Holder for TNMG160404 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 offers high rigidity and secure clamping for internal turning with TNMG160404 inserts?"
The BEYOND D25S-MTUNR16 is a professional-grade internal boring bar engineered for demanding CNC lathe operations. Built with a high-tensile spring steel shank, it helps reduce deflection and vibration during deep-bore machining. The top-clamp design secures TNMG160404 inserts for stable chip control and dimensional consistency across steel, alloy, stainless steel, and cast iron workpieces.
Tool Nomenclature Breakdown: D25S-MTUNR16
2. Product Core Advantages
- High-Rigidity Spring Steel: Helps reduce tool chatter and deflection during internal boring.
- Secure Top-Clamp Design: Keeps the insert stable during heavy internal cuts.
- Controlled Chip Flow: TNMG160404 geometry supports consistent internal turning performance.
3. Technical Specifications
| Metric Specification | Recommended Cutting Parameters |
|---|---|
| Shank Height / Width: 25mm (~1in) | Vc: 160-280 m/min |
| Insert Compatibility: TNMG160404 | Feed: 0.18-0.40 mm/rev |
Explore Internal Boring Solutions
[View Boring Tool Holder Collection] →4-6. Application & Compatibility
Applications: Precision ID boring, internal roughing, deep-bore profiling, and internal facing for automotive, aerospace, and general machinery workpieces.
Compatibility: CNC lathes and internal boring setups using 25mm-height tool holders. TNMG160404 inserts are required.
Material Matrix: Suitable for steel (P), stainless steel (M), cast iron (K), and other listed metal workpieces.
7. Why Choose BEYOND Precision Tooling
Designed for controlled internal turning.
High-tensile spring steel holder.
Expert CNC tooling assistance.
8. Product FAQ
Q: Are TNMG160404 inserts included?
A: No, the holder is supplied without inserts.
Q: What is the main benefit of spring steel?
A: It helps suppress harmonic vibration during internal machining.
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.