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Tensioning FAQ

Common Bolt Tensioning & Hydraulic Stud Questions

1. Why Hydraulic Bolt and Stud Tensioning?

Hydraulic tensioning is more accurate, faster, and less likely to cause issues with threads such as galling. See the entire answer

2. Can I Loosen or “Breakout” Studs using Hydraulic Stud Tensioners?

Hydraulic Stud Tensioners are frequently used to loosen or breakout studs. It is important to protect the stud threads from damage and from corrosion during the time between makeup and breakout. See the entire answer

3. How many Stud Tensioners do I need?

You can tension most applications with one Hydraulic Stud Tensioner. Using additional Tensioners gives the benefit of even flange closure and speeds up the job. See the entire answer

4. How much stud do I need above the nut?

Plan to have at least one (1) diameter of thread protruding above the nut. See the entire answer

5. What is Elongation and why is it important?

When you tension a stud with a Hydraulic Stud Tensioner, the stud acts like a spring and gets longer (elongates). The potential energy created by this stretching of the stud provides the clamping force on the flange or other surface being tensioned. See the entire answer

6. Why do the Hydraulic Stud Tensioners have Dual Hydraulic Ports?

Most of HTI’s Hydraulic Stud Tensioners have dual Hydraulic Ports.  Dual Ports simplify the Hydraulic Hose connections and allow you to chain multiple tensioners together to tension simultaneously. See the entire answer

Ask A Question

If you have questions, comments, would like more information about our products, or want to get started designing your custom tensioning solution, please contact us and we will respond promptly.