The HYTORC NUT is a 3-part tensioning system for extremely difficult applications. The special construction lets the bolt move with the inner sleeve without side loads, torsion or reaction because the nut does not turn on the flange surface. The bolts are 100% mechanically tensioned. The solution combines the best features of bolt tensioning with hydraulic torque wrench usage. The method is in use on many critical applications from nuclear reactors to turbines and above all where ever time usage in bolting operations needs to be minimized.
- No reaction arm or reaction point needed
- Fast and simple to use
- Eliminates the need for bolt elongation measurement
- Precision straight-pull tensioning with calibrated bolt load accuracy of +/- 5%
- Suitable for even tight spaces and high temperatures up to 537°C