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Single Stage

Single Stage Tensioners

Hydraulic tensioning is the ideal method for tightening bolted connections. Hydraulic tensioning eliminates inaccuracies and helps achieve correct bolt loading in critical connections. At HTI, we’ve been building hydraulic tensioners and nuts since 1986.

What are Single Stage Bolt Tensioners?

Single stage bolt tensioners are ideal for applications that are vertically limited. They provide a large amount of stroke in a vertically compact package.

Single Stage Bolt Tensioner Options

HTI provides a wide variety of single stage hydraulic tensioners in both fixed models used with a specific stud size, and variable models that work with a variety of stud sizes. 

If one of our standard catalog models doesn’t work, we can design a custom tensioner for any fastening application.  

HTI single-stage tensioners can be standard or spring returns and are available in standard sizes (up to 4" / M100) and in lerger sizes (up to 17" M425).

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Fixed Model Tensioners Model 1973 M72 & M120 Tensioners

Fixed Model Tensioners Model 1973 M72 & M120 Tensioners

Single Stage Tensioner Applications

HTI offers single stage hydraulic tensioners used for a variety of applications, such as:

  • Pipeline Flanges
  • Pressure Vessels
  • Valves and Pumps, Pump Couplings
  • Manways
  • Heat Exchangers
  • Diesel Engines
  • Cranes
  • Presses
  • Steam & Gas Turbines
  • Shaft Couplings
  • Coal and Rock Grinders
  • Catalyst Reactors
  • Wind Turbines
  • Electric & Steam Generators
  • And more

Types of Single Stage Tensioners

  • Fixed: made for a specific stud and nut size
  • Variable: able to accommodate a number of different stud and nut sizes
  • Large stud: for applications with studs over 6” in diameter
  • High load and stroke: for applications requiring high bolt loading or an extra long stroke

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Custom Engineered Tensioners Since 1986

HTI has been designing engineered solutions to your toughest bolt tensioning problems since 1986! You can choose from one of our standard catalog sizes above, or we can design a custom fixed tensioner for any application when a standard model won’t work. HTI tensioners can be designed for imperial or metric-sized studs, high loads, high temperatures, large stud sizes or corrosive environments. Our multi-unit tensioning systems can make easy work of large bolted systems, and our automated tensioning systems can reduce labor and increase throughput in high-volume manufacturing applications. 

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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.