Special equipment for industry

AS Tech Automatische Schraubenspannvorrichtung

Automatic bolt tensioner

This purely axial method allows engaging the tensioning force exactly into the connection. The optimization of assembly time is the biggest benefit. Due to the automatic bolt tensioner eliminates time-consuming screwing and unscrewing. The resulting time saving of the tensioning is approximately 50%. Standard design Patented thread clamping Drive gear, teethed nut and gearbox Automatic…

AS Tech Sonderhydraulik

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.

AS Tech Industriehydraulik

Hydraulic systems

Our spectrum ranges from small mobile units up to stationary hydraulic systems. The operating pressures starts at 300 bar (4,350 psi) in the auxiliary hydraulics by 1000 bar (14,500 psi) in the working hydraulics up to 4000 bar (58,000 psi) in the high pressure hydraulics. It is important for us to analyze your application parameters…

AS Tech Lufthydraulikaggregat

Air-Hydraulic Power unit

With our air-hydraulic pumps you can generate pressures up to 2500 bar. With the selected increasing ratio, the pump can be adjusted to the existing air pressure network. The air-hydraulic pumps are mainly used in explosion-proof areas. A pressure regulator installed at the input side can adjust the hydraulic pressure at the output side. The…

AS Tech Einstufige Schraubenspannvorrichtung mit Gewinde im Kolben

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.

AS Tech Spannwegabhängige Ausführung mit Passblech

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…