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.
Stroke is the amount that a stud (or bolt) can be stretched when a load is applied. The size of the stud, it’s length (longer studs require more stroke) and the stud material specifications determine how much deflection is required to achieve the target load.
Our standard line of Fixed and Variable tensioners offer up to ½” / 15mm of stroke.
Our long-stroke tensioners offer longer strokes than the standard designs. HTI has produced tensioners with a stroke of 6”, but there is no practical limit on how many strokes a tensioner can have.
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.