Mitsubishi JOMT080320ZZSR-JM MP6120 Milling Insert | MMC Japan
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JOMT080320ZZSR-JM MP6120
Mitsubishi Materials | AJX08 Series Toughened Steel Roughing Specialist
The Mitsubishi JOMT080320ZZSR-JM MP6120 is a high-performance high-feed milling insert designed for the AJX08 cutter series. Engineered for the rigors of interrupted cutting and unstable machining environments, the MP6120 grade provides the extreme toughness required for roughing ISO-P Steels. With the JM chipbreaker, this insert offers a reinforced edge that excels in heavy-duty applications where fracture resistance is the primary concern.
Technical Specifications
| ISO Designation (Metric) | JOMT080320ZZSR-JM |
|---|---|
| ANSI Designation (Inch) | JOMT 2.5(3)6-JM |
| Insert Size | 08 (For AJX 08 Type Cutters) |
| Corner Radius (RE) | 2.0 mm (.0787") |
| Grade / Coating | MP6120 (Al-Ti-Cr-N PVD Tough Grade) |
MP6120 Tough Grade
The MP6120 grade is a PVD-coated carbide featuring Mitsubishi's specialized Al-Ti-Cr-N layer. This coating is specifically formulated to withstand thermal cracking and mechanical shock. It is the first choice for roughing alloy steels under interrupted conditions or when using older, less rigid CNC machines.
JM Chipbreaker Strategy
The JM (General Machining) geometry on this JOMT08 insert provides a strengthened cutting edge. By optimizing the rake angle for durability, the JM chipbreaker allows for high feed metal removal while maintaining lower cutting temperatures and preventing catastrophic edge failure in hard-skin materials.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed Per Tooth ($f_z$) |
|---|---|---|
| Carbon Steel / Alloy Steel | 120 - 200 m/min | 0.5 - 1.2 mm/t |
| Hardened Steel (< 45HRC) | 80 - 150 m/min | 0.4 - 1.0 mm/t |
AJX08 TOOLING SYSTEM
Requires AJX 08 Type high-feed cutters (End Mills and Modular Heads).
Shop AJX 08 Tool Holders →Metric vs. Inch Cross-Reference
| Feature | ISO: JOMT080320 | ANSI: JOMT 2.5(3)6 |
|---|---|---|
| Inscribed Circle (IC) | 8.0 mm | 5/16" |
| Thickness (S1) | 3.4 mm | .134" |
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.