 Widgets # Turning Horsepower Calculator

Calculate the horsepower required for a turning operation based on the feed rate, depth of cut, and cut diameter, which will determine the material removal rate (or metal removal rate). Also required is the unit power, which is a material property describing the amount of power required to cut that material. The horsepower at both the spindle and the motor are shown, as well as the spindle torque for a given spindle speed (RPM). The motor horsepower required for the turning operation can then be compared to the horsepower capability of the machine. Learn more about Turning.

## Turning Horsepower Calculator

 Feed rate (IPM) × Radial depth of cut (in) × Cut diameter (in) × π × π = Material removal rate (in³/min)
 Material removal rate (in³/min) × Unit power (hp/in³/min) = Spindle horsepower (hp) Spindle horsepower (hp) ÷ Machine efficiency (%) / 100 = Motor horsepower (hp) Spindle horsepower (hp) × 63,030 ÷ Spindle speed (RPM) = Spindle torque (in∙lb) Get Widget!
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