Free reaming calculator

Calculates pilot diameter, spindle speed, and feed from a specified reaming allowance.

Finished diameter

Diametral allowance

Cutting speed

Feed per revolution

Formulas

Dpre = Dfinished − allowance; n = 1000 · vc / (π · D); vf = n · f

Sources: Dubbel: Mechanical Engineering Handbook, geometric and physical principles.