Corner Radius - R

This is the most critical parameter for choosing a round nose milling cutter. The radius size directly determines the size of the processed fillet and the strength of the tool.

Small radius (such as R0.2-R0.5): closer to a flat end milling cutter, suitable for precision machining of small features or situations requiring very small rounded corners.

Large radius (such as R1.0 or above): With very high strength, it is suitable for heavy-duty rough machining, semi precision machining, and machining parts that require large rounded corners.

material

Solid carbide: the mainstream choice. Suitable for high-speed and high-precision processing of most materials (steel, aluminum, copper, plastic, wood).

Coating: For processing steel or stainless steel, high-temperature resistant coatings such as TiAlN can be selected; For processing aluminum, one can choose uncoated polished edges or coatings specifically designed for aluminum to prevent chip buildup.

Blade count

Processing hard materials such as steel and cast iron: usually choose 4 or more blades to improve stability and surface smoothness.

Processing soft materials such as aluminum and wood: Choose 2 or 3 blades to ensure sufficient chip space, smooth chip removal, and avoid heat generation and chip accumulation.