1. What is the Torque to Axial Force Formula?

The torque to axial force formula calculates the axial force generated in a bolt when a specific torque is applied. This relationship is fundamental in mechanical engineering and bolted joint design.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( F \) — Axial force (N)
• \( T \) — Applied torque (Nm)
• \( K \) — Torque coefficient (dimensionless)
• \( D \) — Bolt diameter (m)

Explanation: The formula shows the direct relationship between applied torque and the resulting axial force in a bolt, accounting for the torque coefficient and bolt diameter.

3. Importance of Torque to Axial Force Calculation

Details: Accurate calculation of axial force from torque is crucial for proper bolt tensioning, joint integrity, and preventing joint failure in mechanical assemblies.

4. Using the Calculator

Tips: Enter torque in Nm, torque coefficient (typically 0.15-0.25 for standard bolts), and bolt diameter in meters. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical torque coefficient value?
A: For standard bolts, K typically ranges from 0.15 to 0.25, but varies with lubrication, thread condition, and material.

Q2: Why is accurate axial force important?
A: Proper axial force ensures joint integrity, prevents loosening, and maintains seal pressure in critical applications.

Q3: How does lubrication affect the calculation?
A: Lubrication reduces the torque coefficient, meaning less torque is needed to achieve the same axial force.

Q4: Can this formula be used for all bolt types?
A: While the basic formula applies to most bolts, specialized fasteners may require modified coefficients or different formulas.

Q5: How accurate is this calculation?
A: The calculation provides a good estimate, but actual results may vary due to friction, surface conditions, and other factors.