High-Feed Cast Iron Specialist | 1.2mm Radius Wiper Edge | Made in Japan
Product Overview
The Mitsubishi WNMG080412-MW UC5115 is a high-performance double-sided 80° trigon negative insert precision-engineered for Cast Iron turning. Combining the extreme toughness of the UC5115 CVD coating with a robust 1.2mm corner radius, this insert excels in heavy-duty machining and interrupted cuts. The integrated MW wiper chipbreaker technology allows for significantly higher feed rates without compromising surface finish, making it a premier indexable carbide insert for maximizing productivity on your CNC lathe when working with gray and ductile iron.
ISO Designation Identification
W Trigon 80°
N Negative 0°
M Tolerance
G Hole/Chip
08 IC 12.7mm
04 Thick 4.76mm
12 Radius 1.2mm
MW Cast Wiper
Technical Specifications: Metric vs. Imperial
Technical Feature
Metric (ISO)
Imperial (ANSI)
Model Number
WNMG 080412-MW
WNMG 433-MW
Inscribed Circle (IC)
12.7 mm
0.500 inch
Corner Radius
1.2 mm
0.047 inch
Advanced Grade: UC5115 (Ultimate Toughness)
The UC5115 grade is Mitsubishi's premium solution for stable and efficient cast iron turning. It features a specialized CVD coating that offers superior resistance to thermal cracking and adhesive wear. This grade is specifically engineered to handle the abrasive nature of iron while maintaining a high degree of edge toughness, essential for large-scale precision machining in industrial settings.
MW Wiper Chipbreaker Technology
The MW (Wiper) chipbreaker is designed to solve the trade-off between speed and surface quality. By incorporating a wiper edge on the radius, this CNC turning insert allows for a feed rate nearly twice that of a standard insert while achieving the same Ra surface finish. Combined with the 1.2mm radius, it provides the ultimate edge security for heavy roughing and medium-finishing of cast iron.
⭐⭐⭐⭐⭐ "Cycle Time Reduced" - David R., USA "The MW wiper radius is fantastic. I was able to increase my feed rate on gray iron housings by 60% and the finish still looks like it was ground."
⭐⭐⭐⭐⭐ "Best for Ductile Iron" - Lukas M., Germany "UC5115 handles the abrasive nature of ductile iron perfectly. The 1.2mm radius provides great edge strength for interrupted cuts."
⭐⭐⭐⭐ "Very Stable" - Kenji H., Japan "Authentic Mitsubishi quality. Very stable tool life, which is critical for our automated production lines."
⭐⭐⭐⭐⭐ "Great ROI" - Liam G., Australia "The 6 edges on the WNMG trigon shape make this very cost-effective. Excellent performance for the price."
⭐⭐⭐⭐⭐ "Perfect for Roughing" - Andrzej W., Poland "We use these for heavy roughing of cast iron components. The inserts are tough and handle the heat very well."
Technical Q&A
Q: What makes the 'Wiper' (MW) special?
A: The wiper edge is a flattened radius. In CNC turning, it allows you to increase feed rates while maintaining a high-quality surface finish, significantly reducing cycle times.
Q: Is UC5115 suitable for interrupted cuts?
A: Yes, UC5115 is designed for high impact resistance, making it one of the best choices for interrupted cutting in cast iron.
Q: How many edges do I get per insert?
A: As a WNMG trigon insert, it features 6 usable cutting edges, offering 50% more value than a standard 4-edged diamond insert.
Expert Machining Tip: UC5115 vs. MC5015
For Stable, Continuous High-Speed turning of iron, MC5015 is the king. For Heavy Interrupted Cuts or older machines where toughness is required, UC5115 is the better choice.
Mitsubishi WNMG080412-MW UC5115 Wiper Carbide Inserts for Cast Iron (10pcs)
$92.26
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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.
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