1. What is Axial Bolt Torque?

Axial bolt torque refers to the rotational force applied to a bolt to achieve proper tension and clamping force. It is a critical parameter in mechanical engineering and construction to ensure bolt integrity and joint reliability.

2. How Does the Calculator Work?

The calculator uses the fundamental torque formula:

Where:

• \( Torque \) — Rotational force (Newton-meters)
• \( Force \) — Applied force (Newtons)
• \( Radius \) — Distance from center to force application point (meters)

Explanation: This formula calculates the torque generated when a force is applied perpendicular to a lever arm at a specific distance from the rotation point.

3. Importance of Torque Calculation

Details: Proper torque calculation is essential for bolt preload accuracy, preventing under-tightening (which can lead to joint failure) and over-tightening (which can cause bolt stretching or breaking).

4. Using the Calculator

Tips: Enter force in Newtons and radius in meters. Ensure both values are positive numbers for accurate torque calculation.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for force and radius?
A: Force should be in Newtons (N) and radius in meters (m) for torque in Newton-meters (Nm).

Q2: Why is proper bolt torque important?
A: Correct torque ensures proper clamping force, prevents loosening under vibration, and maintains joint integrity in mechanical assemblies.

Q3: What factors affect bolt torque requirements?
A: Factors include bolt material, thread lubrication, surface finish, temperature, and required preload tension.

Q4: How does radius affect torque calculation?
A: Torque increases linearly with radius - doubling the radius doubles the torque for the same applied force.

Q5: Can this calculator be used for torque wrench calibration?
A: While it provides theoretical torque values, actual torque wrench calibration requires specialized equipment and procedures.