Free radial engagement calculator

Calculates engagement angle and average tooth count from radial width of cut.

Cutter diameter

Radial width of cut

Teeth

Feed per tooth

Continue calculating

Observe machine limits and actual tool geometry.

φ = arccos(1 − 2ae/D)z_E = z · φ/(2π)

Sources: https://www.sandvik.coromant.com/en-gb/knowledge/machining-formulas-definitions/milling-formulas-definitions