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" |