BHT Standard bolt tensioners
Hydraulic bolt tensioners for bolts from M20 to M130 & from 3/4 "to 5". Gravity return, end stroke indicator, guided piston. Maximum reliability and extra lifetime
BWT Wind tensioners multistage
Multistage hydraulic spring return bolt tensioners. Ideal for use on wind towers, suitable for various bolt sizes. Operating pressure 1350 bar, safety valve, limit switch indicator, interchangeable nut bridge, spring…
Special hydraulic bolt tensioners
Blackiron designs and manufactures special custom tensioners for all needs, suitable for bolts up to 7" and more.
Threaded load cell bolt tensioners
This Blackiron bolt tensioners series is ideal to be used in tight space applications