TOOLS / DRILLING

Drill speed and feed calculator

Calculate a practical starting spindle speed and feed rate from drill diameter, cutting speed and feed per revolution.

Drill diameter (mm)Cutting speed (m/min)Feed per revolution (mm/rev)

Starting spindle speed796 RPM

Approximate feed rate: 95.5 mm/min

Use the tool manufacturer’s recommendations and reduce speed when drilling difficult materials, deep holes or when coolant and machine rigidity are limited.

Formula

Spindle speed = (1000 × cutting speed) ÷ (π × drill diameter).

Feed rate = spindle speed × feed per revolution.