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Automated Hydraulic Tensioning Systems

Automated Tensioning Systems

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.

HTI also builds multi-unit tensioning systems, where all bolt loads in a system can be applied at once, for a quicker, more even fastening solution.

Combine multi-unit tensioning with automation, and you have our industry leading automated tensioning solutions.

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Locomotive Cylinder-Head Stud Hydraulic Tensioner, Pump, Controls and GCI Manipulator Lift System with AdaptiCS Validation Package

Locomotive Cylinder-Head Stud Hydraulic Tensioner, Pump, Controls and GCI Manipulator Lift System with AdaptiCS Validation Package

Automated operations can include:

  • Target bolting area identification
  • Positioning of the tensioning devices on the target bolting area
  • Attachment to the studs and nuts
  • System pressurization
  • Tension / bolt load application
  • Nut turn down
  • Pressure release
  • Tensioner piston return
  • Tensioner device removal
  • Overall system monitoring and regulation

With HTI’s automated tensioning systems, we handle everything, including electrical, control, mechanical, and hydraulic systems design, and project management, and deliver an automated tensioning system that is ready to drop into your manufacturing process.

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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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.