1. What is Torque to Axial Force Conversion?

The torque to axial force calculation converts rotational torque applied to a screw or bolt into the resulting linear (axial) force. This is particularly important in mechanical engineering applications like bolted joints and power screws.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• \( F \) — Axial force (N)
• \( T \) — Applied torque (Nm)
• \( P \) — Thread pitch (m)
• \( \mu \) — Friction coefficient (unitless)
• \( r \) — Effective radius (m)

Explanation: The equation accounts for both the mechanical advantage of the screw thread and the friction in the system.

3. Importance of Torque-Force Relationship

Details: Understanding this relationship is crucial for proper bolt tightening, preventing joint failure, and ensuring mechanical system integrity.

4. Using the Calculator

Tips: Enter torque in Nm, pitch in meters, friction coefficient (typically 0.1-0.3 for steel), and effective radius in meters. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical friction coefficient for bolts?
A: For steel bolts, μ is typically 0.1-0.3 depending on lubrication and surface finish.

Q2: How do I determine the effective radius?
A: For standard bolts, use the average of the thread root and crest diameters divided by 2.

Q3: Why does pitch affect the axial force?
A: The pitch determines the mechanical advantage - finer pitches create more axial force for the same torque.

Q4: How accurate is this calculation?
A: It provides a good estimate but actual values may vary due to factors like thread form, lubrication, and surface roughness.

Q5: Can this be used for power screws?
A: Yes, the same principle applies to power screws, lead screws, and other threaded power transmission systems.