How Many Surface Feet per Minute is That?

It is sometimes desirable to calculate the quantity of surface feet per minute attained, when the diameter of the rotating cutter (i.e. milling) or the work piece (i.e. turning) is known, and the RPM's are established. The equation used in this calculation is:

SFM = (Pi * Diameter * RPM) / 12

where, SFM = Surface Feet per Minute, RPM = revolutions per minute

You can find the Surface Feet Per Minute calculator under the "Machining Calculations" sub-menu.

Enter the diameter and revolutions per minute in the appropriate text boxes. Press Calculate. The answer appears in the Answer frame.

Use the Clear button to clear all fields, however this is not necessary in order to do another calculation. You may simply type over the previous entries.

You may send the page to your default printer by pressing Print.

Press Menu to return to the main menu selection area.