Mitsubishi CNMG190612-MA US735 Heavy Duty Stainless Steel Insert (10pcs)
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CNMG190612-MA US735
Heavy Roughing Titan | US735 PVD Grade | MA Medium-Heavy Geometry
Built for Extreme Scale & Heavy Roughing
US735 Grade (The Impact Specialist): When machining large stainless steel parts, heat and scale are the enemies. The US735 PVD-coated grade is designed with an ultra-tough substrate that absorbs mechanical shock. Its specialized coating layer prevents "notch wear" at the depth-of-cut line, a common failure point in Austenitic Stainless Steels.
MA Chipbreaker (Controlled Power): The MA geometry on this 19mm insert is scaled for medium-to-heavy depths of cut. It balances a sharp cutting action to reduce work-hardening with a strong land area that supports the cutting edge during aggressive metal removal.
1.2mm (3/64") Roughing Radius: The 12 radius is essential for heavy-duty turning. It provides maximum corner strength to withstand the high radial forces generated during deep cuts (up to 8mm depth) while maintaining tool integrity through interrupted sections.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG190612-MA | 19.05 mm | 6.35 mm | 1.20 mm |
| Imperial | CNMG643-MA | 3/4" | 1/4" | 0.0472" (3/64") |
Heavy-Duty Cutting Parameters
*Due to the 19mm size, ensure your machine has high torque and the tool holder is a rigid double-clamp type.
| Material Group | Speed (Vc) | Feed (fn) | Max Depth (Ap) |
|---|---|---|---|
| 304/316 Stainless Steel | 60 - 140 m/min | 0.25 - 0.60 mm/r | 1.50 - 8.00 mm |
| Duplex Stainless / Inconel | 20 - 50 m/min | 0.20 - 0.45 mm/r | 1.50 - 5.00 mm |
Heavy-Duty Tool Holders
Engineered for DCLNR/L 19 or MCLNR/L 19 series (3232 or 4040 shank sizes recommended):
Shop DCLNR 19 HoldersPro-Tip: When to choose the 1906 size?
CNMG190612 (The Power Choice): Use this when your depth of cut exceeds 5mm or when machining large diameter shafts. The thicker 6.35mm insert body dissipates heat much better than the standard 1204 series.
Interrupted Cuts: US735 is legendary for handling heavy interruptions. If your 19mm inserts are breaking due to impact, ensure you are using a Double Clamp (D-Type) holder for maximum security.
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