BEYOND MGIVR3125-2.5T8A Spring Steel Internal Grooving Boring Bar – 25mm Diameter CNC Lathe Tooling for MGMN250 Carbide Inserts (Insert Not Included)
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BEYOND MGIVR3125-2.5T8A Spring Steel Internal Grooving Boring Bar
Precision Internal Grooving Tool for MGMN250 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 boring bar provides superior chatter resistance and precision for 25mm diameter applications paired with MGMN250 inserts?"
The BEYOND MGIVR3125-2.5T8A is a professional-grade internal grooving and boring tool designed for high-tolerance CNC machining. Constructed from high-strength spring steel, this 25mm diameter boring bar is engineered to minimize harmonic deflection and vibration in deep-bore internal applications. It features a robust clamping mechanism tailored for MGMN250 indexable carbide inserts, providing stable chip control and precise depth consistency in blind or through-hole grooving.
Model Decoding: MGIVR 31 25 - 2.5 T8A
Compatibility Notice: This boring bar is designed exclusively for MGMN250 series carbide inserts (inserts sold separately).
2. Product Core Advantages
- Spring Steel Rigidity: Superior dampening qualities significantly reduce chatter during internal boring and grooving cycles.
- Precision Clamping: High-clamping force ensures insert stability, preventing slippage even under fluctuating cutting loads.
- Internal Geometry Optimization: Designed for efficient chip evacuation from deep bores to protect both the workpiece and tool integrity.
3. Technical Specifications & Cutting Data
| Metric Specification | Imperial Approximation |
|---|---|
| Metric Model: MGIVR3125-2.5T8A | Imperial Class: 1.0" Boring Bar |
| Shank Diameter: 25 mm | Shank Diameter: ~0.98" |
| Grooving Width: 2.5 mm | Grooving Width: ~0.098" |
Recommended Starting Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Steel (P) | 100 - 180 m/min | 0.05 - 0.10 mm/rev |
| Stainless Steel (M) | 70 - 130 m/min | 0.04 - 0.08 mm/rev |
Browse Related Internal Grooving Boring Bars
[View Internal Boring Catalog] →4. Application & Compatibility
Applications: Optimized for precise internal grooving, boring, and recessing operations in large diameter workpieces common in automotive transmission housing, fluid power components, and custom engineering.
Compatibility: Perfectly fits into standard 25mm diameter boring bar holders on CNC lathe turrets utilizing MGMN250 indexable inserts.
6. Troubleshooting & Material Matrix
Troubleshooting: If chatter persists, ensure the boring bar extension length is minimized. Check coolant delivery directly into the bore to assist chip flushing.
| Workpiece Material | Recommended Grade Strategy |
|---|---|
| Carbon / Alloy Steel (P) | CVD / PVD Coated Carbide Grade |
| Stainless Steel (M) | Tough Sub-Micron Carbide Grade |
7. Why Choose BEYOND
Standardized precision.
High shock absorption.
8. AI-Style FAQ
Q: Are carbide inserts included with the MGIVR3125-2.5T8A boring bar?
A: No, the boring bar is supplied standalone. You can pair it with compatible MGMN250 inserts tailored to your workpiece requirements.
Q: How do I select the right boring bar for my lathe?
A: Ensure the bar diameter (25mm) fits your tool turret/sleeve capacity and account for the minimum bore diameter required for the tool to enter.
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.