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Solid Carbide Corner Radius (Bull Nose) End Mill
Combining the aggressive material removal of a square end mill with the edge strength of a ball nose, the solid carbide corner radius end mill (bull nose) is the ultimate tool for heavy-duty CNC machining. By adding a specific radius to the cutting corners, stress concentration is significantly reduced, preventing premature edge chipping. Manufactured from premium micro-grain tungsten carbide, Sundi’s corner radius cutters allow for dramatically higher feed rates and extended tool life when roughing tough alloys and hardened mold steels.
Key Machining Applications for Corner Radius End Mills
Heavy-Duty Roughing & Pocketing: The reinforced corner geometry withstands massive cutting forces, making it the ideal choice for high-speed, high-feed roughing in deep cavities without edge failure.
Aerospace & Exotic Alloys: Extensively used for machining titanium, inconel, and stainless steel components where sharp corners would instantly chip due to extreme heat and cutting pressure.
Mold & Die Fillet Milling: Perfect for machining internal corner radii (fillets) in mold bases and die cavities, reducing stress risers in the final machined parts.
Extended Reach Machining: Paired with long-shank and necked designs, bull nose end mills offer superior rigidity and vibration resistance when plunging deep into complex mold profiles.
- Maximum Wear Resistance
- Reduced Cycle Time
- Chatter-Free Machining
- Sub-Micron Tolerances
Advantages of Sundi Corner Radius End Mills
Superior Edge Strength & Anti-Chipping
The engineered corner radius distributes cutting forces over a larger area, eliminating the fragile sharp point of a standard square mill. This exponentially reduces edge chipping in interrupted cuts and hard metal machining.
Maximum Metal Removal Rate (MRR)
Thanks to the robust R-angle design and high-density carbide substrate, programmers can aggressively push feeds and speeds, slashing cycle times and boosting overall workshop productivity.
Advanced PVD Thermal Protection
Equipped with high-performance PVD coatings (like AlTiN or TiSiN) that excel in high-heat environments. The radiused corners facilitate better heat dissipation, preventing built-up edge (BUE) and thermal cracking.
Precision R-Tolerance & Custom Solutions
A flawless blend requires a perfect radius. Ground on 5-axis CNC machines, we guarantee highly accurate corner radius tolerances ($\pm$0.01mm or better). As a direct manufacturer, we offer custom R-sizes tailored to your exact CAD models.
Corner Radius (Bull Nose) End Mill Series & Specifications
When cycle time and tool longevity are critical, the right corner radius makes all the difference. Sundi Cutting Tools offers a comprehensive selection of bull nose end mills featuring various corner radii (from R0.2 to R3.0+). Whether you are rapidly roughing P20 mold steel (S550 series), cutting aerospace titanium, or high-speed milling aluminum alloys (AL700 series), our reinforced tooling guarantees predictable performance. To explore our specific radius options, flute configurations, and extended neck dimensions, please download our full [carbide end mill catalog].
Why Choosing us
Professional
we have multi top class production lines which help us to offer better performance tools and extend the range of our products.
Quality
Every year, we spend a lot of money upgrading and maintaining our equipment.
in stock
We have an ample supply of goods in stock.
Team
We follow standard procedures and have an excellent team of designers.
OEM
We have many years of leading OEM and ODM manufacturing experience in this field.
Delivery
Receiving goods as fast as 3 days around the world.