Calculate optimal spindle speed (RPM) for machining. Enter cutting speed and tool diameter for instant results. Essential for CNC operators and machinists.
Calculate the optimal spindle speed for machine tools based on cutting speed and tool diameter.
Spindle Speed (RPM) = (Cutting Speed × 1000) ÷ (π × Tool Diameter)
= (100 × 1000) ÷ (3.14 × 10)
= 100000.0 ÷ 31.4
= 0.0 RPM
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