Torque Required to Overcome Friction between Screw and Nut during Lowering Load Calculator

Calculate Torque Required to Overcome Friction









Formula

The formula to calculate the Total Torque is:

\[ T = W_{load} \cdot \tan(\Phi - \psi) \cdot \frac{d}{2} \]

Definition

Total Torque is the measure of the force that can cause an object to rotate about an axis. Force is what causes an object to accelerate in linear kinematics.

Example Calculation

Let's assume the following values:

Using the formula:

\[ T = 53 \cdot \tan(0.21816615649925 - 0.4363323129985) \cdot \frac{0.06}{2} = -0.352494513602206 \text{ Nm} \]

Conversion Chart

Load (Wload) Limiting Angle of Friction (Φ) Helix Angle (ψ) Mean Diameter of Screw (d) Total Torque (T)
50 N 0.21816615649925 rad 0.4363323129985 rad 0.06 m -0.332541993964 Nm
51 N 0.21816615649925 rad 0.4363323129985 rad 0.06 m -0.339192833844 Nm
52 N 0.21816615649925 rad 0.4363323129985 rad 0.06 m -0.345843673723 Nm
53 N 0.21816615649925 rad 0.4363323129985 rad 0.06 m -0.352494513602 Nm
54 N 0.21816615649925 rad 0.4363323129985 rad 0.06 m -0.359145353481 Nm
55 N 0.21816615649925 rad 0.4363323129985 rad 0.06 m -0.365796193361 Nm