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What Should You Know about Bolt Tensioner

by The Custom Boxes
Bolt tensioner

Hydraulic tools such as the tensioners tighten large diameter bolts faster with high level of accuracy.  Contrary to conventional manual torquing, tensioning does not suggest forceful turning of the bolt or even nut, such as hydraulic wrenches, impact wrenches, and even flogging spanners is not needed. You can use  a good Bolt tensioner and it can make procedure effective, easier and efficient.

Talking about bolt type of tensioners, these are mechanical fasteners that get used in place of standard hex nuts or even bolts for easier and more exact tightening of large-diameter bolt and even stud assemblies. They are at times even known as multi-jackboot tensioners (mjts). Many bolt tensioners use torque via hydraulic or even that of manual methods. Hydraulically-powered devices make use of fluid force. Manually-powered products make use of the turning of a wrench or even other hand tool. 

You know bolt tensioners that apply torque through other, non-hydraulic, non-manual types of methods are even there. For all types of bolt sort of tensioners, torque rating is the utmost amount of rotational force that may get produced. Other critical specifications include threaded diameter and even thrust collar inner diameter. Threaded diameter could refer to the internal threaded diameter or even the external threaded diameter, relying on the type of bolt tensioner. 

Types of these Tensioners

There are three basic types of tensioners:

  • Nut replacement
  • Bolt replacement
  • Thrust collar

Nut replacement or even augmentation tensioners are specifically designed to replace or assist a current hex nut in a fastener assembly, to accomplish a desired bolt tension. This is the most common kind of bolt tensioner. With nut replacement devices, the main diameter is the external threaded diameter. 

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Bolt replacement tensioners are somewhat designed to replace an current bolt or stud in an industrial fastener assembly. With these types of devices, the external diameter is most critical. Then thrust collars are bolt sort of tensioners that include a ring having integral jack bolts (high-strength adjustable studs). They replace locknut assemblies and even support bearings in huge steel-mill roll mechanisms and even similar applications, to facilitate servicing by simply maintenance personnel. 


Bolt type of tensioners are used in a diversity of applications. For example, some products are specifically designed for use with compressors. Others are simply used with foundation bolts, devices that simply help support buildings and even other large structures. These tensioners are also utilized with electricity-producing gas turbines and even to mechanically join turbines with electricity-producing generators. Specialized bolt type of tensioners are used to secure water-power related mechanical assemblies in the realm of hydroelectric facilities, as replacement fastening devices on ships and even submersibles, and to secure reactor vessels in nuclear power plants. Additional applications for bolt type of tensioners encompass industrial presses as well as industrial pumps, steam turbines, wind turbines, and even steel mill rollers.


To sum up, you can check out bolt tightening calculations and ensure that you have the perfect tools on your side for the best usage. After all, the right tools can simplify your tasks and ensure productivity and safety.