Processing...

`T_R = ( F * d_m ) / 2*(( L + pi * mu * d_m ) / (pi* d_m - mu * L ))`

Enter a value for all fields

The **Lifting Torque for a Leadscrew** calculator computes the torque required to lift a load with a square thread power screw assembly.

**INSTRUCTIONS:** Choose units and enter the following:* Leadscrew Square Thread *

- (
**d**) Mean Thread Diameter_{m} - (
**d**) Mean Collar Diameter_{c} - (
**L**) Lead - (
**F**) Load - (
**μ**) Coefficient of Friction for Thread

**Lifting Torque (T _{R}):** The calculator returns the torque in Newton meters (N m). However, this can be converted to compatible units via the pull-down menu.

- Compute the leadscrew torque to lift
- Compute the leadscrew torque to lower
*Friction Coefficients*

The **Leadscrew Lifting Torque** equation is:

`T_R= F*d_m/2((L+pi*μ*d_m)/ (pi*d_m- μ*L)) `

where:

- TR is the torque required to raise a load using a Square Thread Power Screw assembly.
- d
_{m}is the mean thread diameter - d
_{c}is the mean collar diameter - L is the lead
- F is the load
- μ is the coefficient of friction for thread