Hydraulic Tensioner Features
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 offers a number of distinguishing hydraulic tensioner features that can often be combined with each other (for example a multi-unit multi-stage tensioner system with spring return).

Standard vs. Spring Return
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Single stage, Multi-Stage, and Elliptical Tensioners
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Through hole tensioners
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High Stroke Tensioners
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Gearbox
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Fixed vs. Variable Tensioners
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Overstroke Indicator & Stop
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Twin Hydraulic Couplings
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Materials, Coatings and Finishes
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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.