Mitsubishi CCMW120412 UC5115 Flat-Top Carbide Insert for Cast Iron (10pcs)
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CCMW120412 UC5115
High-Feed Roughing Specialist | 1.2mm Radius | UC5115 CVD Grade
Maximum Edge Security for Cast Iron
UC5115 Grade (The K-Class Legend): This grade is the industry benchmark for machining Grey and Ductile Cast Iron (K10–K20). The thick CVD (Chemical Vapor Deposition) coating features a highly specialized alumina layer that provides incredible wear resistance against the abrasive graphite particles found in cast iron.
CCMW Flat-Top Geometry: Unlike the CCMT series, the CCMW has no chipbreaker groove. This "Flat-Top" design is essential for cast iron because it provides a 100% supported cutting edge. Since cast iron produces short, brittle chips, the lack of a chipbreaker increases tool life by preventing crater wear on the rake face.
1.2mm Extra-Strong Radius: The 12 (3/64") corner radius is engineered for High-Feed Roughing. It offers the highest level of protection against edge chipping during interrupted cuts or when machining through casting sand and scale.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMW120412 | 12.7 mm | 4.76 mm | 1.20 mm |
| Imperial | CCMW433 | 1/2" | 3/16" | 0.0472" (3/64") |
Heavy Roughing Parameters
*The 1.2mm radius allows for significantly higher feed rates. Adjust feed to 0.35mm+ for optimal performance in Grey Iron.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Gray Cast Iron (HT250) | 150 - 400 m/min | 0.25 - 0.60 mm/r | 1.20 - 5.00 mm |
| Ductile Iron (QT450) | 120 - 320 m/min | 0.20 - 0.45 mm/r | 1.00 - 4.00 mm |
Heavy-Duty Tool Holders
Maximum stability for SCLCR/L 12 series external holders and boring bars:
Shop SCLCR 12 HoldersPro-Tip: When to use the 1.2mm Radius
1.2mm Radius: The "Safety Choice." Use this for heavy scale, interrupted cuts (like boltholes), and high-feed roughing. It creates the strongest possible edge.
0.8mm Radius: Use this for general semi-finishing or when your machine doesn't have the rigidity to handle the higher radial forces generated by a 1.2mm radius.
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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.