Mitsubishi TNMG220408 UC5115 | Heavy-Duty Cast Iron Insert
Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
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 →
Need Help With Mitsubishi Inserts?
Looking for a Mitsubishi equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.