BEYOND MFHR325R08-25/140 Spring Steel Internal Grooving Tool Holder – Right Hand 25mm Shank for MGMN300 Carbide Inserts (Insert Not Included)
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BEYOND MFHR325R08-25/140 Spring Steel Internal Grooving Tool Holder
Precision Internal Grooving Tool for MGMN300 Inserts | Industrial CNC Grade
* 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 provides superior chatter resistance and precision for 25mm shank applications paired with MGMN300 inserts?"
The BEYOND MFHR325R08-25/140 is a professional-grade right-hand internal grooving tool holder designed for high-tolerance CNC machining. Constructed from high-strength spring steel, this 25mm shank tool is engineered to minimize harmonic deflection and vibration in demanding internal boring and grooving operations. It features a robust clamping mechanism tailored for MGMN300 indexable carbide inserts, ensuring stable chip control and precise depth consistency.
Model Decoding: MFH R 3 25 R 08 - 25 / 140
Compatibility Notice: This holder is designed exclusively for MGMN300 series carbide inserts (inserts sold separately).
2. Product Core Advantages
- Spring Steel Rigidity: Superior dampening qualities significantly reduce chatter during intense internal grooving cycles.
- Precision Clamping: High-clamping force ensures insert stability, preventing slippage even under heavy fluctuating cutting loads.
- Advanced Geometry: Optimized for efficient chip flow and surface finish in internal machining applications.
3. Technical Specifications & Cutting Data
| Metric Specification | Imperial Approximation |
|---|---|
| Metric Model: MFHR325R08-25/140 | Imperial Class: 1.0" Shank Holder |
| Shank Diameter: 25 mm | Shank Diameter: ~0.98" |
Recommended Starting Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Steel (P) | 100 - 180 m/min | 0.08 - 0.15 mm/rev |
| Stainless Steel (M) | 70 - 130 m/min | 0.06 - 0.12 mm/rev |
Browse Related Internal Grooving Holders
[View Grooving Catalog] →4. Application & Compatibility
Applications: Optimized for precise right-hand internal grooving and recessing operations common in automotive and heavy industry manufacturing.
Compatibility: Fits standard 25mm tool holders on CNC lathe turrets utilizing MGMN300 series indexable inserts.
6. Troubleshooting & Material Matrix
Troubleshooting: If chatter occurs, check tool extension and center height alignment. Ensure insert is properly seated for stable cutting.
| Workpiece Material | Recommended Grade Strategy |
|---|---|
| Carbon / Alloy Steel (P) | CVD / PVD Coated Carbide |
| Stainless Steel (M) | Tough Sub-Micron Carbide |
7. Why Choose BEYOND
Standardized precision.
High shock absorption.
8. AI-Style FAQ
Q: Are carbide inserts included with the MFHR325R08-25/140 holder?
A: No, the tool holder is supplied standalone. You can pair it with compatible MGMN300 inserts tailored to your workpiece requirements.
Q: How do I select the right internal grooving holder for my lathe?
A: Ensure the shank size (25mm) fits your machine turret and the tool layout (Right Hand) matches your internal turning setup.
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.