Mitsubishi CCMW120408 UC5115 Flat-Top Carbide Insert for Cast Iron (10pcs)
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CCMW120408 UC5115
High-Volume Cast Iron Specialist | Reinforced Flat-Top | UC5115 CVD Grade
Maximum Rigidity for Abrasive Materials
UC5115 Grade (The K-Class Standard): Specifically engineered for Grey, Ductile, and Malleable Cast Iron. This CVD grade features a thick Alumina (Al2O3) layer that provides an industry-leading thermal barrier. It prevents heat from reaching the carbide substrate, allowing for continuous, high-speed turning in abrasive environments without the risk of plastic deformation.
CCMW Geometry (Non-Chipbreaker): Cast iron machining doesn't require chip management; it requires Edge Strength. The Flat-Top (CCMW) design offers the maximum possible carbide volume behind the cutting edge. This prevents the edge from chipping when encountering "hard spots" or sand inclusions common in raw castings.
0.8mm Heavy-Duty Radius: The 08 (1/32") radius is built for high feed rates. It provides a robust corner that dissipates heat more effectively than smaller radii, ensuring long tool life during heavy roughing and semi-finishing of large workpieces.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMW120408 | 12.7 mm | 4.76 mm | 0.80 mm |
| Imperial | CCMW432 | 1/2" | 3/16" | 0.0315" (1/32") |
Recommended Cutting Parameters
*CCMW12 series is designed for heavy-duty equipment. For the best tool life in Grey Iron, dry machining is recommended to avoid thermal micro-cracking.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Gray Cast Iron (Class 30/40) | 150 - 450 m/min | 0.20 - 0.50 mm/r | 1.00 - 4.50 mm |
| Ductile Iron (60-40-18) | 120 - 350 m/min | 0.15 - 0.40 mm/r | 1.00 - 4.00 mm |
Compatible Tool Holders
Optimized for SCLCR/L 12 series External Holders and Large-Diameter Boring Bars:
Shop SCLCR 12 HoldersPro-Tip: When to choose the 1204 size?
Size 1204: Choose this when you are taking depths of cut over 3mm or when using large-scale machines that can handle the high cutting forces of a 1/2" insert.
Size 09T3: Stick to the smaller 09 size for light-duty lathes or finishing passes where high MRR is not the primary goal.
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