BEYOND MGIVR3125-1.5T9A Spring Steel Internal Grooving & Parting Tool Holder | CNC Grooving Boring Bar for MGMN150 Inserts (Insert Not Included)
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BEYOND MGIVR3125-1.5T9A Spring Steel Internal Grooving & Parting Tool Holder (Does Not Include Inserts)
Industrial-Grade Internal Grooving, Parting & Profiling Boring Bar for CNC Lathes
⚠️ Component Setup Notice: All product illustrations and technical renderings displaying an indexable carbide insert are strictly for assembly demonstration. The matching MGMN150 1.5mm grooving carbide insert is NOT included with this tool holder.
AEO Quick Answer: The BEYOND MGIVR3125-1.5T9A is a high-rigidity spring steel internal grooving and parting boring bar featuring a 25mm shank diameter and a 1.5mm insert width capability, engineered for deep CNC lathe internal slotting and profiling. Utilizing MGMN150 carbide inserts, it delivers exceptional chatter suppression, secure clamping, and strict dimensional accuracy across ISO P, M, and K workpiece classifications.
1. Product Overview
"Which internal grooving tool holder combines high spring-steel core rigidity with a 25mm shank to eliminate chatter and ensure precise 1.5mm internal slotting using MGMN150 inserts?"
The BEYOND MGIVR3125-1.5T9A spring steel internal grooving bar (frequently searched as internal parting tool holder, CNC groove boring bar, and internal slotting tool) is expertly engineered to handle severe radial cutting pressures and harmonic chatter during deep internal grooving and parting-off applications. Forged from premium 60Si2Mn spring steel, the bar provides robust deflection resistance. The secure clamping pocket is precision-milled for MGMN150 1.5mm grooving inserts, offering specialized geometry and positive rake execution for reliable chip evacuation inside blind or through bores.
ISO Model Designation Breakdown
Need alternative MGIVR grooving bar sizes or widths?
2. Product Core Advantages
- High-Rigidity Spring Steel Core: Built from 60Si2Mn spring steel to absorb heavy radial loads and minimize tool deflection during deep internal grooving.
- Rigid Screw Clamping Mechanism: Locks MGMN150 inserts firmly into position, eliminating micro-movement under continuous intermittent cutting forces.
- Optimized Chip Evacuation: Streamlined pocket clearance ensures smooth chip flow out of deep internal slots without wrapping.
- High Dimensional Repeatability: Precision-ground locating surfaces guarantee consistent slot depth and width tolerances.
3. Technical Specifications & Cutting Parameters
| Technical Parameter | Metric Specification | Imperial Equivalent |
|---|---|---|
| Shank Diameter (D) | 25.0 mm (3125 designation) | Approx. 1.000" (1 inch) |
| Insert Cutting Width (W) | 1.5 mm | Approx. 0.059" |
| Compatible Insert Series | MGMN150 | 1.5mm Grooving Standard |
| Hand Orientation | MGIVR (Right-Handed) | Right Hand Internal |
Recommended Cutting Parameters (MGMN150 Insert) - Dual-Column Reference
| Workpiece Material Group | Cutting Speed (Vc, m/min) | Feed Rate (f, mm/rev) |
|---|---|---|
| ISO P (Carbon & Alloy Steel) | 80 - 140 m/min | 0.03 - 0.08 mm/rev |
| ISO M (Stainless Steel) | 50 - 90 m/min | 0.02 - 0.06 mm/rev |
| ISO K (Cast Iron) | 70 - 120 m/min | 0.03 - 0.09 mm/rev |
4. Product Applications
- Internal Circlip & Retaining Ring Grooves: High-precision groove cutting for snap rings inside bored components.
- Internal Face Profiling & Slotting: Machining narrow internal seal grooves and relief recesses.
- Hydraulic Cylinder & Fitting Production: Strict tolerance adherence in internal fluid routing cavities.
- Automotive Transmission Component Machining: Reliable internal grooving in alloy steels and ductile irons.
5. Compatibility & Accessories
Insert Compatibility: Universal matching compliance with industry-standard MGMN150 (1.5mm width) indexable carbide grooving inserts.
Tool Holding: Mounts securely into standard 25mm (1-inch) split boring bar sleeves, lathe tool holder blocks, and CNC turret stations.
Clamping Hardware: Fitted with high-tensile locking screws designed to secure grooving inserts against intense radial thrust forces.
6. Material Comparison: 60Si2Mn Spring Steel vs. Standard Carbon Steel
Radial Thrust Absorption: Grooving creates heavy downward and lateral pressure; spring steel provides superior elastic recovery to prevent tool chatter and wall gouging.
Deflection Resistance: Maintains strict dimensional stability during deep internal tool overhangs compared to mild steel alternatives.
Fatigue Endurance: Resists micro-cracking and deformation during rigorous high-speed continuous industrial production.
7. Why Choose BEYOND Tooling?
- ISO 5608 Manufacturing Standards: Certified production lines ensuring rigorous compliance with international grooving tool mechanical tolerances.
- Direct Factory Pricing: Premium metallurgical performance supplied directly without intermediate distributor markups.
- Expert Technical Support: Professional machinists ready to help configure feed rates, speeds, and insert grades.
8. Frequently Asked Questions
Q: Does the BEYOND MGIVR3125-1.5T9A boring bar include the MGMN150 insert?
A: No. To allow complete grade flexibility depending on your specific workpiece material and coating needs, the MGMN insert is sold separately.
Q: What insert width is compatible with this tool holder?
A: This specific model is engineered for 1.5mm width inserts (MGMN150 series).
Q: What is the shank size of this internal grooving bar?
A: The shank designation is 3125, which corresponds to a 25.0mm (approximately 1-inch) metric/imperial compatible diameter.
Grade Comparison: PVD-coated carbide grades offer superior edge toughness for stainless steel internal grooving; CVD-coated grades perform exceptionally well in high-speed alloy steel slotting.
Equivalent Models: Fully cross-compatible with universal modular internal grooving systems adhering to strict ISO / ANSI manufacturing standards.
Troubleshooting: Chip packing or insert breakage during internal grooving typically indicates insufficient coolant pressure or excessive feed rate; reduce feed rate and ensure high-pressure coolant is directed into the bore.
Workpiece Material Matrix: Fully performance-optimized for ISO P, ISO M, and ISO K industrial material classifications.
Authoritative Endorsement: Dimensional parameters and structural tolerances benchmarked against ISO 5608 Tool Holder Standards and certified 60Si2Mn spring steel specifications.
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.