Free Engineering Tool #077
Ball Screw Calculator — Torque, Critical Speed & Life
Enter lead, nominal diameter, axial load, and speed to calculate drive torque, efficiency, critical speed, and rated life. Calculations are based on general ball-screw engineering practice and manufacturer-catalogue methods; ball screw terminology and acceptance tolerances are defined in the ISO 3408 standard series.
Drive TorqueCritical SpeedLife L10
Results
Drive Torque
—
Efficiency
—
Critical Speed
—
Rated Life L10
—
Linear Speed
—
Drive Torque
Critical Speed
Life
Apply 0.8 safety factor to critical speed. Use fixed-fixed supports where possible.
The procedures described on this page were developed and field-tested by the Vibromera team using the Balanset-1A, a portable dual-channel balancer and vibration analyzer for on-site rotor balancing.
Vibromera — Portable Balancing & Vibration Analysis.
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