Turning Surface Roughness Calculator

In some turning operations, the single-point tool used for finishing has a rounded front corner, or "nose". As a result, small peaks and valleys in the material will remain as the cutting tool feeds along the rotating workpiece. These surface variations define the surface roughness, which is dependent upon the radius of the tool nose and the cutting feed (IPR). The surface roughness calculator will determine the arithmetic average (Ra) of the surface roughness and display the approximate RMS value as well.