Fixed vs. Variable 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.
We often used the term Fixed Tensioner to refer to our standard line of Fixed Tensioners and Variable Tensioners to refer to our standard line of Variable Tensioners. HTI also specializes in designing custom tensioners, both fixed and variable, for any application.
Fixed tensioners
HTI’s Fixed-model Stud Tensioners are designed to fit specific stud sizes. Fixed models are easy to use, accurate, compact, and economical. Fixed-model Stud Tensioners are perfect when you need a tensioner for a specific job.
Hydraulic Quick-Disconnect Fittings come out of the Top (need about 30cm clearance above the Tensioner to connect the Hydraulic Hoses). Fixed model tensioners are smaller and lighter than a Variable model.
A number of fixed model tensioners
Variable tensioner - single load cell with multiple bridges and pullers
Variable tensioners
Variable Stud Tensioner models allow the tensioning of different bolt/stud sizes or thread forms while utilizing a common load cell. This makes the Variable Tensioner the most versatile as the load cell from this Tensioner can be used with adapters to tension a range of stud sizes. All that is necessary is to change out the pullers and bridges to accommodate a different size of the Variable Tensioner. The versatility of this stud tensioner keeps tool inventory to a minimum.
The Hydraulic Quick-Disconnect Fittings come out of the side.
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.