1. What is the Screw Torque to Axial Force Formula?

The screw torque to axial force formula calculates the axial force generated from applied torque in screw mechanisms. It's essential for designing and analyzing mechanical systems involving screws, bolts, and threaded fasteners.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( F \) — Axial force (N)
• \( T \) — Applied torque (Nm)
• \( \eta \) — Efficiency (dimensionless)
• \( L \) — Lead (m)

Explanation: The formula converts rotational torque into linear axial force, accounting for the screw's mechanical efficiency and lead distance.

3. Importance of Axial Force Calculation

Details: Accurate axial force calculation is crucial for proper fastener tensioning, structural integrity analysis, and preventing mechanical failures in threaded connections.

4. Using the Calculator

Tips: Enter torque in Nm, efficiency as a dimensionless value (0-1), and lead in meters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is lead in screw mechanics?
A: Lead is the linear distance the screw advances in one complete revolution (360° turn).

Q2: How is efficiency determined for screws?
A: Efficiency depends on thread geometry, material friction, lubrication, and varies typically between 0.3-0.9 for most screw systems.

Q3: Can this formula be used for both metric and imperial units?
A: Yes, but all units must be consistent. Convert all measurements to the same system before calculation.

Q4: What factors affect screw efficiency?
A: Thread angle, friction coefficient, surface finish, lubrication, and material properties all influence mechanical efficiency.

Q5: When is this calculation most important?
A: Critical applications include aerospace fasteners, automotive assemblies, structural bolting, and precision mechanical systems where proper clamping force is essential.