Mitsubishi SNMG120408 UC5105 Turning Insert | Cast Iron Specialist
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SNMG120408 UC5105
Mitsubishi Materials | High-Speed Cast Iron Turning Authority
The Mitsubishi SNMG120408 UC5105 is a premium indexable turning insert specifically engineered for high-speed machining of cast iron. Utilizing the advanced UC5105 CVD coating, this insert is the benchmark for stability and wear resistance in gray cast iron (FC) and ductile iron (FCD) applications. Its robust substrate allows for maximum productivity in high-volume CNC turning, significantly reducing cycle times and tool change frequency.
Packaging: Original Mitsubishi Box of 10 Inserts
ISO Designation Decoded
Square 90°
0° Relief
M-Class Tol.
Double Sided
12.7mm Size
4.76mm Thick
0.8mm Radius
Technical Specifications
| Feature | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SNMG120408 | SNMG 432 |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" |
| Thickness ($S$) | 4.76 mm | 0.187" |
| Corner Radius ($RE$) | 0.8 mm | 0.031" |
UC5105 Grade Technology
The UC5105 grade is Mitsubishi's specialized CVD coated carbide for ISO K05-K15 applications. It features a thick, highly crystalline Al2O3 layer that provides exceptional heat resistance. This grade is optimized for high-speed continuous cutting of cast iron where maintaining a sharp edge and resisting crater wear are the primary requirements.
SNMG Double-Sided Geometry
The SNMG geometry offers eight cutting edges per insert, providing excellent cost-per-edge efficiency. The 0.8mm radius is the versatile industry standard for medium roughing to finishing. Mitsubishi's integrated chipbreaker ensures stable chip control, reducing the risk of chip wrapping on the workpiece in automatic lathe operations.
Recommended Cutting Parameters
Optimized for Cast Iron Turning (UC5105)
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC) | 200 - 550 m/min | 0.15 - 0.45 mm/rev | 1.0 - 4.5 mm |
| Ductile Cast Iron (FCD) | 150 - 350 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.0 mm |
HOLDER COMPATIBILITY
Pairs with standard PSSNR/L, DSBNR/L, or MSKNR/L 90° turning tool holders.
View Turning Holders →
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.