Mitsubishi JDMT120420ZDSR-JM FH7020 Milling Insert | MMC Japan
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JDMT120420ZDSR-JM FH7020
Mitsubishi Materials | AJX Series Cast Iron High-Feed Specialist
The Mitsubishi JDMT120420ZDSR-JM FH7020 is a high-performance high-feed milling insert specifically optimized for Cast Iron (Gray & Ductile) machining. While the VP series focuses on stainless steel, the FH7020 grade is engineered for high-speed wear resistance in abrasive iron materials. Utilizing the AJX12 system's high-efficiency geometry, this insert provides maximum metal removal rates (MRR) while maintaining edge stability via the JM chipbreaker.
Technical Specifications
| ISO Designation (Metric) | JDMT120420ZDSR-JM |
|---|---|
| ANSI Designation (Inch) | JDMT 434ZDSR-JM |
| Insert Size | 12 (For AJX 12 Type Cutters) |
| Corner Radius (RE) | 2.0 mm (.0787") |
| Grade / Coating | FH7020 (PVD Coated Specialist for Cast Iron) |
FH7020 Grade Efficiency
The FH7020 grade is a PVD coated carbide developed for abrasion resistance. Cast iron machining generates significant friction; FH7020 resists flank wear and thermal cracking, allowing for higher cutting speeds ($v_c$) compared to general-purpose grades when dry machining iron.
JM Chipbreaker Strategy
The JM (General Machining) chipbreaker on this JDMT12 series insert features a strengthened edge. It is designed to sustain high feed rates while effectively managing the short, brittle chips typical of cast iron milling, preventing dust buildup and heat concentration at the edge.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed Per Tooth ($f_z$) |
|---|---|---|
| Gray Cast Iron (FC250/300) | 150 - 300 m/min | 1.0 - 2.5 mm/t |
| Ductile Cast Iron (FCD) | 120 - 220 m/min | 0.8 - 2.0 mm/t |
AJX12 SYSTEM COMPATIBILITY
This insert fits all AJX 12 Type high-feed cutters, optimized for high-rigidity spindles.
Shop AJX 12 Tool Holders →Metric vs. Inch Cross-Reference
| Feature | ISO: JDMT120420 | ANSI: JDMT 434 |
|---|---|---|
| Insert Width | 12.7 mm | 1/2" |
| Thickness | 4.76 mm | 3/16" |
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.