1. What is the Torque to Force Formula?

The torque to force formula calculates the axial force generated by a torque applied to a bolt or fastener. This relationship is essential in mechanical engineering for determining the clamping force in bolted joints.

2. How Does the Calculator Work?

The calculator uses the torque to force formula:

Where:

• \( F \) — Force (N)
• \( T \) — Torque (Nm)
• \( K \) — K Factor (dimensionless)
• \( D \) — Diameter (m)

Explanation: The formula converts applied torque to axial force using the bolt diameter and a dimensionless friction factor (K).

3. Importance of Torque to Force Calculation

Details: Accurate force calculation is crucial for ensuring proper bolt tension, preventing joint failure, and maintaining structural integrity in mechanical assemblies.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is the K factor?
A: The K factor is a dimensionless coefficient that accounts for friction in the threaded connection. It varies based on lubrication, thread condition, and material.

Q2: Why is accurate force calculation important?
A: Proper bolt tension ensures joint integrity, prevents loosening under vibration, and maintains seal pressure in gasketed connections.

Q3: What are typical K factor values?
A: For clean, dry threads: 0.20-0.25. For lubricated threads: 0.15-0.20. Manufacturer specifications should be consulted for precise values.

Q4: Does thread pitch affect the calculation?
A: The standard formula shown accounts for thread pitch within the K factor. More complex formulas may explicitly include thread pitch.

Q5: Can this calculator be used for metric and imperial units?
A: This calculator uses SI units (Nm, m, N). For imperial units (lb-ft, in, lb), appropriate unit conversions must be applied.