Multi-stage bolt tensioner with exchangeable tension nut

The multi-stage bolt tensioner with exchangeable tension nut is used to generate high prestressing forces using small outside diameter. This tool is mainly used in the field of turbines, large bearings and pumps. Also in many different industrial applications. Standard design Hydraulic body with turnable, fixed support sleeve Drive gear, teethed nut and gearbox Automatic…

BodAS / BomAS

BodAS (Documentation System) Automatic documentation of all screw connections in the force flow Transmission of the datas by radio (2.4 GHz) Evaluation of data via Windows (Printable) Usable for bolt tensioners as well as for torque tools Bidirectional data transfer possible Control of the aggregates with the corresponding PDA BomAS (Monitoring System) Measuring physical sizes…

Special-purpose hydraulics

We do not limit ourselves to existing products to the technique of axial pre-tensioning of bolts. Through in-depth knowledge and extensive experience in the field of high-pressure hydraulics, we are specialists in the creation of customized solutions. Tailored to your individual case, we help you develop new ideas and solutions.

Clamping stroke dependent version with spacer plate

The hydraulic nut consists essentially of an internally threaded cylinder, a piston and a splitted spacer plate. The hydraulic nut will be pressurized up to the desired pre-tensioning force. This creates a gap between the piston and cylinder corresponding to the elongation and compression of the components. In this calculated gap the corresponding spacer plate…

Single-stage bolt tensioner with exchangeable tension nut

By the feature of the exchangeable tension nut we create in common with a hydraulic cylinder and multiple supplementary sets, an assembly tool for bolts and nuts used in general engineering. It is highly cost effective, for example if for a machine, a tool for different thread sizes is necessary.

Single-stage bolt tensioner with threaded puller

A feature of this bolt tensioner is its low profile. The single-bolt tensioning device is low-cost and thus has a short payback period. It is used in many different industrial applications.