Mitsubishi TNMG220408 UC5115 | Heavy-Duty Cast Iron Insert
Price shown is a starting point. Contact us for a precise quote based on your requirements.
TNMG220408 UC5115
Mitsubishi Materials | The Heavy-Duty Cast Iron Powerhouse
The Mitsubishi TNMG220408 UC5115 is a large-format CVD coated carbide insert designed for high-performance turning of Gray and Ductile Cast Iron. Utilizing the UC5115 grade with an ultra-thick thermal barrier coating, this insert provides industry-leading flank wear resistance. As a long-tail precision tool for large CNC lathes, it is optimized for stable turning of abrasive cast surfaces where smaller inserts fail to provide sufficient tool life.
K-Class Turning | Size 22 Robustness | Thick Alumina Coating
Code Identification Breakdown
Triangular Shape
0° Relief Angle
M-Class Tolerance
Cylindrical Hole
22mm Edge
4.76mm Thick
0.8mm Radius
Global Standard Comparison
| Specification | ISO (Metric) | ANSI (Inch) Equivalent |
|---|---|---|
| Model Number | TNMG220408 | TNMG 432 |
| Inscribed Circle (IC) | 12.7 mm | 0.500" |
| Nose Radius (RE) | 0.8 mm | 0.031" |
UC5115 Grade Performance
The UC5115 grade is a specialized CVD turning insert technology featuring Mitsubishi's exclusive coating adhesion treatment. It provides superior heat resistance for high-speed cast iron turning. The thick Alumina layer acts as a thermal shield, extending tool life in abrasive gray and ductile iron environments.
Size 22 Robust Geometry
The TNMG 6-edged insert at the Size 22 (12.7mm IC) platform offers massive edge strength. This indexable turning insert is built for larger workpieces, providing a high heat-sink capacity and preventing the thermal cracking common in smaller geometry inserts during long finishing passes.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC300) | 180 - 450 m/min | 0.20 - 0.50 mm/rev | 1.0 - 5.0 mm |
| Ductile Cast Iron (FCD) | 120 - 350 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.5 mm |
TOOL HOLDER COMPATIBILITY
Optimized for high-rigidity MTJNR/L or WTJNR/L tool holders (Size 22).
Shop Size 22 Tool 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.