Mitsubishi SNMU140812ANER-M MC5020 | 8-Corner Cast Iron Milling
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SNMU140812ANER-M MC5020
Mitsubishi Materials | Double-Sided 8-Corner Cast Iron Specialist
The Mitsubishi SNMU140812ANER-M MC5020 is a high-performance indexable milling insert specifically engineered for cast iron machining. With 8 usable cutting edges on a double-sided square geometry, this insert maximizes cost-efficiency for large-scale production. Featuring the specialized MC5020 CVD coating, it is designed to withstand the abrasive nature of GGG40 and GGG70 cast irons, ensuring long tool life in high-speed face milling operations.
Condition: 100% Genuine Mitsubishi | Pack of 10 Inserts
Model Designation Decoded
Square
0° Relief
M-Class Precision
Double Sided
14mm Size
8.4mm Thick
1.2mm Radius
Medium Cut
Technical Specifications
| Dimension | Metric (ISO) | Inch Equivalent |
|---|---|---|
| ISO Model | SNMU140812ANER-M | SNMU 55.33.12 ANER-M |
| Thickness ($S$) | 8.40 mm | 0.331" |
| Corner Radius ($RE$) | 1.2 mm | 0.047" |
MC5020: The Cast Iron Authority
The MC5020 grade is a specialized CVD coated carbide specifically developed for Gray and Nodular Cast Iron (ISO K). It features a high-hardness Alumina coating layer that provides extreme crater wear resistance. This allows for significantly higher cutting speeds ($v_c$) compared to universal PVD grades, making it the top choice for mass-production CNC milling.
M-Breaker (Medium Duty)
The M-Breaker is the primary choice for general-purpose milling. It features a honed edge that balances sharpness with strength, reducing cutting resistance while preventing edge chipping. This results in superior surface finish quality and dimensional consistency in cast iron components.
Recommended Cutting Parameters
Starting Data for Cast Iron Milling (MC5020)
| Material | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (GG25) | 150 - 350 m/min | 0.15 - 0.40 mm/t | Up to 5.0 mm |
| Nodular Cast Iron (GGG40/50) | 120 - 250 m/min | 0.12 - 0.35 mm/t | Up to 4.0 mm |
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.