Lead Screw Engineering Calculators

Torque-Forward Drive Calculator

Torque Backdrive Calculator

Torque (in lbs.)

Load (in lbs.)

Lead (in/rev)

Backdrive Efficiency

Key Torque-Forward Drive Calculator

Torque (in lbs.)

Load (in lbs.)

Lead (in/rev)

Forward drive Efficiency

Key Torque-Backdrive Calculator

Torque (in lbs.)

Load (in lbs.)

Lead (in/rev)

Backdrive Efficiency

Speed Calculator

Speed (in./min.)

Lead (in/rev)

Rotational Speed (rpm)

Drive Horsepower-Rotary Calculator

Drive Horsepower-Rotary (hp)

Drive Torque (in lbs.)

Rotational Speed (rpm)

Drive Horsepower-Linear Calculator

Drive Horsepower-Linear (hp)

Load (lbs.)

Speed linear (in/min)

Critical Speed Calculator

Critical Speed (rev/min)

Minor Diameter (in)

Factor of safety

Unsupported Length (in)

End Fixity Factor Fixed-free: 0.32 Supported-supported: 1.00 Fixed-supported: 1.55 Fixed-fixed: 2.24

Column Loading Calculator

Column Loading (lbs)

Maximum safe column load (lbs)

Factor of safety

End Fixity Factor Fixed-free: 0.25 Supported-supported: 1.00 Fixed-supported: 2.00 Fixed-fixed: 4.00

Efficiency – Power Screws – Forward Drive Calculator

Forward Drive Efficiency

Lead Angle (degrees)

Thread angle in normal plane (degrees)

Coefficient of friction

Efficiency – Power Screws – Backdrive Calculator

Backdrive Efficiency

Lead Angle (degrees)

Thread angle in normal plane (degrees)

Coefficient of friction

Lead Angle Calculator

Lead Angle (degrees)

Lead (in/rev)

Screw pitch diameter (in)

Wear Life for Ball Screws Calculator

Wear Life for Ball Screws (in)

Operating load rating (lbs)

Actual load (lbs)

Acceleration Force Objects in Linear Motion Calculator

Acceleration Force, Linear Motion (lbs)

Weight of object (lbs)

Change in linear speed (ft/min)

Time period to accelerate (sec)

Acceleration Torque Objects in Rotary Motion Calculator

Acceleration Torque, Rotary Motion (ft lbs)

Rotational inertia of object (lbs ft2)

Change in rot. speed (rpm)

Time period to accelerate (sec)