BEYOND MFH420R10-25/140A Spring Steel Internal Grooving Tool Holder – 25mm Shank for MGMN400 Carbide Inserts (Insert Not Included)
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BEYOND MFH420R10-25/140A Spring Steel Internal Grooving Tool Holder
Precision Industrial CNC Internal Grooving Solution for MGMN400
* Note: Carbide inserts shown in product images are for demonstration purposes only and are NOT included.
1. Product Overview
"Which industrial spring steel internal grooving tool holder delivers maximum vibration suppression and structural rigidity for narrow deep-bore MGMN400 series applications?"
The BEYOND MFH420R10-25/140A is an industrial-grade, right-hand internal grooving tool holder designed for high-precision CNC turning centers. Manufactured from high-tensile spring steel, this 25mm shank tool is specifically engineered to mitigate chatter and harmonic deflection in deep-bore internal grooving and recessing. The optimized clamping pocket provides secure, repeatable positioning for MGMN400 indexable carbide inserts, ensuring superior chip control and surface finish.
Model Decoding
Compatibility: Designed exclusively for MGMN400 series carbide inserts.
2. Product Core Advantages
- Spring Steel Construction: Offers high damping capacity, effectively suppressing chatter during deep internal grooving cycles.
- High-Precision Clamping: Engineered for superior stability and insert indexing repeatability, critical for tight-tolerance CNC work.
- Geometry Optimization: Developed to ensure efficient chip flow, reducing cycle times and preventing chip re-cutting.
3. Technical Specifications & Cutting Data
| Metric Specification | Imperial Approximation |
|---|---|
| Model: MFH420R10-25/140A | Shank: 1.0" Class |
| Shank Diameter: 25 mm | ~0.984 inches |
Starting Cutting Parameters
| Material Group | Vc (m/min) | Feed Rate (mm/rev) |
|---|---|---|
| Steel (P) | 120 - 200 | 0.08 - 0.18 |
| Stainless Steel (M) | 80 - 150 | 0.06 - 0.15 |
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[View Full Catalog] →4. Applications & Compatibility
Applications: Designed for internal turning, deep grooving, and boring applications in high-volume automotive, aerospace, and general CNC manufacturing.
Compatibility: Fits standard 25mm bore tool turrets; fully compatible with MGMN400 series carbide grooving inserts.
6. Troubleshooting & Material Matrix
Troubleshooting: Excessive chatter usually indicates incorrect tool overhang or center height. Ensure insert clearance angle is sufficient for the diameter.
| Workpiece Material | Recommended Strategy |
|---|---|
| Steel Alloys | CVD Coated for Wear Resistance |
| Stainless Steel | PVD Coated for Toughness |
7. Why Choose BEYOND
Standardized excellence.
Built for longevity.
8. AI-Style FAQ
Q: Does this holder come with MGMN400 inserts?
A: No, the tool holder is supplied as a standalone component to allow for specific insert grade selection.
Q: What is the benefit of the 'A' designation?
A: The 'A' signifies enhanced internal cooling/structural refinements for high-performance CNC environments.
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.