Free thread milling calculator

Calculates spindle speed and corrected thread feed for thread milling.

Nominal diameter

Cutter diameter

Cutting speed

Feed per tooth

Number of flutes

Thread type

Formulas

n = 1000 · vc / (π · dc)vf = fz · z · n · (D ± dc) / D

Sources: https://cdn.sandvik.coromant.com/files/sitecollectiondocuments/downloads/global/technical%20guides/en-gb/c-2920-031.pdf