1. What is the Torque Calculation Formula?

The torque calculation formula T = K × F × D is used to determine the appropriate tightening torque for metric bolts. This formula accounts for the torque coefficient, applied force, and bolt diameter to ensure proper fastening without damaging the bolt or the materials being joined.

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 formula calculates the rotational force required to properly tighten a bolt, considering the friction coefficient and geometric properties.

3. Importance of Torque Calculation

Details: Proper torque calculation is essential for ensuring bolt integrity, preventing loosening under vibration, avoiding overtightening that can cause bolt failure, and maintaining the structural integrity of assembled components.

4. Using the Calculator

Tips: Enter the torque coefficient (typically 0.15-0.25 for standard bolts), the applied force in Newtons, and the bolt 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 metric bolts, the torque coefficient typically ranges from 0.15 to 0.25, depending on the surface finish and lubrication.

Q2: Why is proper torque important in bolted connections?
A: Proper torque ensures the bolt develops adequate clamping force, prevents joint loosening, and avoids damage to the bolt or threaded components.

Q3: How does lubrication affect torque calculation?
A: Lubrication reduces the torque coefficient, meaning less torque is required to achieve the same clamping force. Always use the appropriate coefficient for the lubrication condition.

Q4: What are the consequences of over-torquing?
A: Over-torquing can lead to bolt stretching, thread stripping, bolt failure, or damage to the components being fastened.

Q5: Should torque values be adjusted for different materials?
A: Yes, different materials may require adjusted torque values due to varying friction coefficients and strength properties. Always consult manufacturer specifications.