Corner Rounding Cutter
This corner radius end mill is solid tungsten steel. Micro-grain tungsten carbide. Hard and strong. Handles materials up to HRC 55°. Good for high-speed cutting.
Internal and external chamfer with large chip flutes. Chips clear smooth. One-pass forming for fast chamfering and deburring.
Small Craftsman (Shandong) Machine & Tools Co., Ltd. is one of the leading manufacturers and suppliers of corner rounding cutter in China. If you're going to wholesale bulk advanced corner rounding cutter, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
Internal Radius End Mill / Internal R Cutter
Corner Rounding Cutter provides consistent radius finishing on edges, enhancing part durability and aesthetics. It is widely used in precision machining for rounding external corners.
This corner radius end mill is solid tungsten steel. Micro-grain tungsten carbide. Hard and strong. Handles materials up to HRC 55°. Good for high-speed cutting.
Internal and external chamfer with large chip flutes. Chips clear smooth. One-pass forming for fast chamfering and deburring.
4-flute vibration-resistant design. Edge honing suppresses chatter at high speed. Reduces chipping.
High-mirror polished body. Smooth surface, less resistance. Sharp edges. Burr-free surfaces.
Multiple materials. Stainless steel, alloy steel, tool steel. Fits CNC centers, engraving machines, precision mills. This carbide corner rounding tool is versatile.
Precise specs. High geometric edge precision. Stable internal R forming, accurate dimensions. Good for batch work.
High-hardness coating. More stable performance. This edge rounding milling cutter wears well. This cnc radius cutter performs.
It is also designed for long-term industrial stability in continuous production environments. The reinforced carbide structure helps maintain cutting edge integrity even under high thermal load, reducing downtime caused by tool wear or frequent replacement. This makes it suitable for manufacturers who require consistent output quality across large machining batches.
The tool geometry is optimized for smooth tool engagement, reducing cutting resistance during entry and exit. This helps minimize stress on both the tool and the workpiece, improving surface finish while extending tool life. It performs especially well in contour finishing, mold edge processing, and precision component deburring where edge consistency is critical.
In high-speed CNC machining applications, this internal radius end mill maintains excellent balance performance, reducing vibration at elevated spindle speeds. The result is improved dimensional accuracy and reduced risk of micro-chipping on delicate edges. Its stable cutting behavior also makes it suitable for automated production lines where repeatability is essential.
The coating technology enhances oxidation resistance and heat dissipation, allowing the cutter to maintain hardness under aggressive cutting conditions. Combined with the micro-grain carbide substrate, it ensures a strong combination of toughness and wear resistance, particularly when machining hardened steels and abrasive alloys.
Overall, this tool is engineered for precision, efficiency, and durability, making it a reliable choice for modern CNC machining operations that demand both surface quality and productivity.
| Type | Diameter(D) | Angle | Shank Diameter(d) | Total length(L) |
| 4R*0.5*50 | 4 | 0.5 | 4 | 50 |
| 4R*0.75*50 | 4 | 0.75 | 4 | 50 |
| 4R*1*50 | 4 | 1 | 4 | 50 |
| 6R*1.5*50 | 6 | 1.5 | 6 | 50 |
| 6R*2*50 | 6 | 2 | 6 | 50 |
| 6R*2.5*50 | 6 | 2.5 | 6 | 50 |
| 8R*3*50 | 8 | 3 | 8 | 50 |
| 10R*4*60 | 10 | 4 | 10 | 60 |
| 12R*5*60 | 12 | 5 | 12 | 60 |
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