1. What is the Torque Formula?

The torque formula T = K × F × D calculates the torque required for bolt tightening, where T is torque (Nm), K is the torque coefficient (dimensionless), F is the force (N), and D is the diameter (m). This equation is essential for proper bolt tensioning in mechanical applications.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

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

Explanation: The equation calculates the rotational force required to achieve proper bolt tension, accounting for friction and geometric factors through the torque coefficient.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for ensuring proper bolt tension, preventing joint failure, avoiding over-tightening, and maintaining structural integrity in mechanical assemblies.

4. Using the Calculator

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

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 based on surface finish, lubrication, and thread condition.

Q2: Why is proper torque important?
A: Proper torque ensures adequate clamping force, prevents loosening from vibration, and avoids damage from over-tightening.

Q3: How does lubrication affect torque?
A: Lubrication reduces friction, requiring less torque to achieve the same clamping force. Always use the K value appropriate for your lubrication condition.

Q4: Can this formula be used for all bolt types?
A: While the basic formula applies to most bolts, specialized fasteners may require specific torque calculations or manufacturer recommendations.

Q5: What units should be used?
A: Use consistent SI units: Newtons for force, meters for diameter, and Newton-meters for the resulting torque.