1. What is the Torque Equation?

The torque equation (T = F × d × K) calculates the rotational force needed to tighten a bolt. It considers the applied force (F), distance from the pivot point (d), and a friction coefficient (K) that accounts for thread and material properties.

2. How Does the Calculator Work?

The calculator uses the torque equation:

Where:

• \( T \) — Torque (Nm)
• \( F \) — Applied force (N)
• \( d \) — Distance from pivot (m)
• \( K \) — Friction coefficient (unitless)

Explanation: The equation accounts for the linear relationship between force, distance, and the friction coefficient to determine proper bolt tightening torque.

3. Importance of Torque Calculation

Details: Proper torque calculation is crucial for bolt integrity - under-torquing can lead to loosening while over-torquing can damage threads or stretch bolts beyond yield strength.

4. Using the Calculator

Tips: Enter force in newtons, distance in meters, and appropriate K coefficient (typically 0.2 for dry steel). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical K coefficient value?
A: For dry steel on steel, K ≈ 0.2. Lubricated threads may use K ≈ 0.15-0.18. Always consult manufacturer specifications.

Q2: Why is distance in meters important?
A: Torque depends on the lever arm length - longer wrenches require less force to achieve same torque.

Q3: How accurate is this calculation?
A: It provides theoretical values. Actual torque should account for thread condition, lubrication, and material properties.

Q4: What units should I use?
A: The calculator uses SI units (N, m, Nm). For imperial units (lb-ft), convert inputs appropriately.

Q5: Can this be used for critical applications?
A: For safety-critical applications, always follow manufacturer specifications and use calibrated torque tools.