By: XI”AN KAEN MACHINERY
Because the hydraulic bolt tensioner is the safest, most reliable and repeatable tightening process, it has many advantages over other less accurate tightening methods:
DIRECT: direct application of a tensioner to the expansion of the bolt, without the need to overcome friction or loss.
PRECISION: The applied load can be controlled very precisely because it corresponds directly to the pressure applied to the tensioner.
CALCULATED: load transfer factors can be calculated to help provide the correct residual load.
FAST: Tool operation and greater accuracy reduce the time required to re-tighten the load.
MULTI-FUNCTION: it can double the load of the joint fastener at the same time of drawing. Reliable: Uniform Bolt loads ensure high accuracy by applying consistent forces.
No stress: pure axial, tensile load to ensure that there is no distortion stress.
So the ideal tool for pretightening large bolts is the hydraulic bolt tensioner.