1. What is Clamp Load?

Clamp Load (F) is the axial force generated when torque is applied to a fastener. It represents the clamping force that holds joined components together and is crucial for maintaining joint integrity.

2. How Does the Calculator Work?

The calculator uses the clamp load formula:

Where:

• \( F \) — Clamp load (N)
• \( T \) — Applied torque (Nm)
• \( K \) — Torque coefficient (dimensionless)
• \( D \) — Nominal diameter (m)

Explanation: The formula calculates the axial clamping force generated from the applied torque, considering the fastener diameter and friction coefficient.

3. Importance of Clamp Load Calculation

Details: Proper clamp load calculation is essential for ensuring joint integrity, preventing fastener failure, and maintaining proper sealing in mechanical assemblies.

4. Using the Calculator

Tips: Enter torque in Nm, coefficient value, and diameter in meters. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for torque coefficient K?
A: The torque coefficient typically ranges from 0.15 to 0.30 for most standard fasteners, depending on surface finish and lubrication.

Q2: Why is clamp load important in bolted joints?
A: Proper clamp load ensures joint integrity, prevents loosening, and maintains the required preload to withstand operational forces.

Q3: How does diameter affect clamp load?
A: Larger diameters require more torque to achieve the same clamp load, as the force is distributed over a larger area.

Q4: What factors influence the torque coefficient K?
A: Surface finish, lubrication, thread pitch, and material properties all influence the torque coefficient value.

Q5: Can this formula be used for all types of fasteners?
A: While the basic principle applies to most threaded fasteners, specific applications may require adjustments for thread type and engagement length.