430-1 Air-hydraulic pump
single and double-acting, pmax. 500 bar

The pressure generators convert a pneumatic input pressure into a hydraulic operating pressure. Pressure adjustment and compressed air preparation take place in an external maintenance unit.

The single-acting pressure generator clamps or unclamps the connected clamping elements by manually operating the pedal. The pressure generator delivers oil until the selected operating pressure is reached. The integrated non-return valve keeps the oil pressure constant. In the event of pressure loss, e.g. due to leakage, there is no automatic resupply.

The pressure generator for double-acting clamping elements enables constant pressurization. The clamping and unclamping of the clamping elements is carried out via the control lever of the 4/3 directional control valve. Depending on the position of the 4/3 directional control valve, the clamping elements are first extended or retracted by pressing the pedal. The pedal is depressed until the clamping elements have reached their end position and the desired oil pressure has been built up. The pedal can be fixed by the pedal lock. Clamping and unclamping can then be carried out using the control lever. With the pedal fixed, the pressure generator can automatically compensate for a small pressure loss.