Guide / Speeds & Feeds

CNC Speeds & Feeds Reference

Calculating optimal cutting parameters

Formulas

RPM = (SFM x 3.82) / DIA. Feed = RPM x Flutes x Chip Load.

Reference (Carbide, 10mm dia)

Material	SFM	Chip Load
Aluminum	1200-2000	0.08-0.15mm
Mild Steel	400-600	0.05-0.12mm
Stainless 304	300-500	0.03-0.08mm
Titanium	150-300	0.02-0.05mm