Metric_Speed_Feed_1

RPM = (m/min) x 318 ÷ Ø mm/min = Feed per Tooth x mm/min = Feed per Rev. x RPM Number of Teeth x RPM VC Cutting Speed (m/min) π Pi (3.14, our Ø to Circ. ratio) D Tool Diameter (mm) n rev/min (RPM, S-Code) VF Table Feed (mm/min, F-Code) fZ Feed per Tooth (mm) fn Feed per Revolution (mm) Z Number of Flutes ae Width of Cut, Radial Depth of Cut ap Depth of Cut, Axial Depth of Cut Download Haas Shop Notes, the Machinist’s CNC Reference Guide, from diy.Haascnc.com for more tips and formulas