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THE BOLTIGHT TECHNOLOGY

Boltight has been at the forefront of hydraulic bolt tensioning for over a decade. Our tensioning tools provide fast, accurate and safe solutions to tighten and loosen multiple bolts simultaneously.

How does a hydraulic tensioner work?

  1. A tensioner is attached to the bolt or stud
  2. High pressure hydraulics are used to axially stretch the bolt
  3. Bolt stretch/elongation creates the clamping force, as the bolt is stretched, the nut lifts clear of the flange
  4. An access window in the tensioner allows the nut to be turned down with very little friction
  5. When the hydraulic pressure is released, the nut traps the stretch in the bolt retaining the ‘load’

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Eliminate the need to overcome friction, making Boltight faster and safer than torquing

Multiple tensioners can be used simultaneously, increasing efficiency and offering a more uniform tightening procedure than other methods

Minimizes potential for uneven loading or gasket compression, which can occur with torque tightening methods

Less physically demanding operations lead to reduced operator fatigue, increasing worker safety

BOLTED INSIGHTS

Count on our knowledge in every step of your journey, across installation, maintenance, and after-market support.

Bolting Tips

What Is the Load Transfer Factor?

When utilizing hydraulic bolt tensioners to induce a controlled preload into a bolted joint, several key factors including load transfer factor need to be examined.

Bolting Tips

The Experts: The making or breaking of bolted joints

What is Hooke’s Law and why is it crucial to bolted joints? Hooke’s Law relates to the accurate tightening of bolted joints. When examining a bolt’s behaviour, the axial force is plotted against th...

Knowledge

Hydraulic tensioning or torquing - that is the question

Which is the best method for controlled tightening of a bolted joint? Bolted plays hydraulic torquing off against hydraulic bolt tensioning. And the winner is…

BOLTIGHT HYDRAULIC TENSIONERS

Standard size inventory available quickly, in stock or through global distribution network

Explore solutions

Boltight hydraulic tensioners offer consistent and repeatable results for applications where accuracy is critical.

The technology

We are the industry leader in custom engineered hydraulic solutions to suit any application.

Custom solutions

Receive after-market application support and service from our global network of sales teams.

Service & support