1. What is Torque Specification?

Torque specification refers to the precise amount of rotational force required to properly tighten a bolt or fastener. It ensures proper clamping force without damaging the fastener or the materials being joined.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

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

Explanation: The formula calculates the torque required based on the force applied and the diameter of the bolt, adjusted by the torque coefficient which accounts for friction and other factors.

3. Importance of Torque Calculation

Details: Proper torque calculation is crucial for ensuring bolt integrity, preventing loosening under vibration, avoiding thread stripping, and maintaining proper joint clamping force in mechanical assemblies.

4. Using the Calculator

Tips: Enter the torque coefficient (K), force in Newtons (F), and diameter in meters (D). All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical value for K?
A: The torque coefficient K typically ranges from 0.15 to 0.30 for most applications, but varies based on lubrication, thread condition, and material.

Q2: Why is proper torque important?
A: Proper torque ensures joint integrity, prevents bolt failure, maintains seal integrity, and ensures safety in mechanical assemblies.

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

Q4: What happens if torque is too high?
A: Excessive torque can stretch bolts beyond yield point, strip threads, damage mating surfaces, or cause joint failure.

Q5: Should torque values be adjusted for different materials?
A: Yes, different materials have different friction coefficients and strength properties, which affect the appropriate torque specification.