Mitsubishi RCMT0803MO US735 Round Turning Insert | Genuine Japan
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RCMT0803MO US735
Mitsubishi Materials | Stainless Steel Profiling Specialist
The Mitsubishi RCMT0803MO US735 is a premium round turning insert engineered for extreme toughness and reliability. Round inserts are the professional standard for profiling and copy turning due to their robust edge geometry. Featuring the specialized US735 PVD coating, this insert is a heavy-duty solution for machining stainless steel, particularly in interrupted cutting conditions where thermal shock and chipping often lead to premature tool failure in CNC turning.
Technical Specifications
| ISO Designation | RCMT0803MO |
|---|---|
| ANSI Designation | RCMT 2.53 MO |
| Grade / Coating | US735 (TiAlN PVD Coated) |
| Inscribed Circle (IC) | 8.0 mm (0.315") |
| Thickness (S) | 3.18 mm (0.125") |
US735 PVD Toughness
The US735 grade is Mitsubishi's dedicated PVD coated carbide for the M-class (Stainless Steel). It utilizes a specialized tough substrate that excels during heavy roughing and interrupted cuts. The TiAlN coating layer provides a smooth surface to prevent built-up edge (BUE), a common issue when turning gummy austenitic stainless steels like 304 or 316.
MO Geometry Design
The MO chipbreaker provides a balanced cutting edge that manages cutting resistance effectively across the circular profile. Since round inserts do not have a fixed corner radius, the MO geometry allows for high feed rates while maintaining excellent chip control, significantly improving the surface finish during complex 3D profiling operations.
Recommended Cutting Parameters
Primary Material: Stainless Steel (M20 - M40)
| Workpiece Material | Cutting Speed ($v_c$) | Feed per Rev ($f$) |
|---|---|---|
| Austenitic Stainless (304/316) | 70 - 140 m/min | 0.10 - 0.25 mm/rev |
| Ferritic/Martensitic (400 Series) | 90 - 160 m/min | 0.10 - 0.28 mm/rev |
| Duplex Stainless Steel | 40 - 90 m/min | 0.08 - 0.18 mm/rev |
SRDC / SRGC HOLDER COMPATIBILITY
The RCMT0803MO insert is designed for high-stability SRDC style turning tool holders.
View Compatible Tool Holders →Metric vs. Inch Cross-Reference
| Feature | Metric (ISO) | Inch (ANSI) |
|---|---|---|
| Diameter | 08 (8.0 mm) | 2.5 (5/16" or 0.315") |
| Thickness | 03 (3.18 mm) | 3 (1/8" or 0.125") |
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.