Corner Radius End Mill

Corner Radius End Mill is a square end mill that is ground to a radius on the corner where the peripheral cutting edge and the end cutting edge intersect. The radius avoids corner chipping and changes the wall and floor of the step into a smooth transition, so it is also known as bull nose end mill. This standard range covers 39 sizes with cutting diameter from 1 mm to 20 mm, corner radius from 0.2 mm to 2 mm, flute length from 3 mm to 75 mm, and overall length of 50, 60, 75, 100 and 150 mm (the last for the extended versions of the larger diameters). There are 4 variants of grade and coating as shown in the photos: the HRC55/56 series with a silver or bronze finish, HRC60 with a grey-blue finish and HRC65 with a blue finish.

Each size is described in one line, e.g. D5R0.5*15*D5*75L*4F. The numbers are the cutting diameter (D), the corner radius (R), the flute length (l), the shank diameter (D) and the overall length (L) in mm. 4F means that there are 4 flutes. One size can be offered in several corner radius options on the same body. The R column in the chart shows all the radii possible for that line. For example, D4R0.2*10*D4*50L*4F can be offered with a corner radius of 0.2, 0.3, 0.5 or 1 mm. When you enquire, please indicate the size you need and the radius you prefer.