Run independently of the way of clamping with counter nut

With internal and external threads of restricted piston, a cylinder and a lock nut are the essential components of a hydraulic nut. The mother is initially up to the designed prestressing pressure applied. This creates a gap between the lock nut and cylinder, which is in line with the expansion and compression of the components to verspannenden. Following the lock nut is turned back to the system on the cylinder. Eventually the pressure is released. This design is must if E.g. the elongation of tensile anchor, the components or the Montagelose are not exactly known and may be tensioned inserted into the machine and wind power plant construction. Because the specific gap size can be added with the lock nut, the different dimensions of the legislative need not be taken into account if several identical tie rod loaded with the same prestressing are. The hydraulic nut is suitable for the retrofitting of machines and is used in bearings or axle tension. easy and safe handling of the mother, any possible review of residual prestressing and the low total Assembly time advocate the use of a hydraulic nut. Leaks of the sealing system constrain the hydraulic nut during the operating phase of any falls. If however required a tighten of tension bolt, only turning in the lock nut is necessary after repeated pressurization. A high stiffness (spring characteristic) of the components, the lock nut must be secured if she should even come off.