BEYOND MGFV425L15-50/80 External Deep Grooving Tool Holder – 25mm Shank, Left-Hand, 4mm Insert Width for MGMN400 Carbide Inserts, High-Rigidity Spring Steel (Insert Not Included)
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BEYOND MGFV425L15-50/80 External Deep Grooving Tool Holder
Industrial-Grade Left-Hand CNC Lathe Tooling for Deep Slotting & Parting
⚠️ Important Setup Notice: All technical renderings and product illustrations displaying an indexable carbide insert are for assembly and demonstration purposes only. The matching MGMN400 carbide insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND MGFV425L15-50/80 is a heavy-duty external deep-grooving tool holder forged from 60Si2Mn spring steel to provide exceptional vibration resistance. Specifically engineered for 4mm MGMN400 inserts, it is optimized for high-deflection CNC turning applications across ISO P (steel) and ISO M (stainless steel) workpiece categories.
1. Product Overview
"Which deep-grooving tool holder design delivers maximum chatter resistance and precise dimensional stability when performing deep external slotting with MGMN400 inserts?"
The BEYOND MGFV425L15-50/80 external grooving tool holder is engineered to resolve deflection challenges inherent in deep turning operations. Constructed from premium 60Si2Mn spring steel, the tool body offers a high elastic limit that dampens harmonic vibrations. Combined with a reinforced insert pocket geometry, it ensures rigid clamping of the MGMN400 insert, facilitating efficient chip evacuation and clean surface integrity.
ISO Model Designation Breakdown
2. Key Features
- 60Si2Mn Spring Steel Construction: Offers high yield strength and shock absorption to minimize tool deflection during aggressive feed rates.
- Precision MGMN400 Pocket Seating: Tailored contact faces secure the 4mm insert tightly, preventing micro-shift under heavy radial loads.
- Left-Hand Orientation: Built for standard CNC lathe setups requiring left-hand external profiling and slotting capability.
3. Technical Specifications & Cutting Parameters
| Specification | Metric | Imperial |
|---|---|---|
| Shank | 25x25mm | 1x1" |
| Insert Width | 4.0mm | 0.157" |
| Cut Depth | 15.0mm | 0.590" |
Recommended Cutting Parameters
| Material | Speed (Vc) | Feed (fn) |
|---|---|---|
| Steel (ISO P) | 120-240m/min | 0.05-0.15mm/rev |
| Stainless (ISO M) | 90-160m/min | 0.04-0.12mm/rev |
4-6. Applications & Material Comparison
Applications: Automotive, Aerospace, and General Precision Engineering.
Compatibility: Standard MGMN400 series indexable inserts.
Grade Comparison: BEYOND grade inserts are optimized for high-temperature stability and wear resistance compared to standard K10/P20 counterparts.
7. Why Choose BEYOND Tooling?
8. Frequently Asked Questions
Q: Are MGMN400 inserts included?
A: No, the holder is supplied as a stand-alone unit.
Q: How do I reduce chatter?
A: Shorten the overhang length and verify tool height is perfectly on the center line.
Technical References:
Standards based on ISO 5608 requirements for indexable turning tool holders. Troubleshooting advice based on standard machining stability principles (Vc/fn optimization).
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.