Four-column hydraulic press no pressure what reason?

There are specific mechanical reasons as follows:

1. First check the reversing valve on the hydraulic pump station, the reversing valve spool may be insensitive in the process of long-term use, and there may be a situation of deadlock.

2. The sealing ring device inside the hydraulic cylinder is aging, and many hydraulic press manufacturers use poor quality sealing devices, which are seriously worn after long-term high temperature.

3. The relay or coil device inside the electric cabinet has a short circuit, and the voltage is unstable or changes, and the electrical device, especially the line, will be short-circuited and burned out.

4. The internal failure of the relief valve of the four-column hydraulic press can not seal the leakage of the entire hydraulic system, and the internal pressure will continue to drop in speed and will follow the size of the aperture of the leak.

Frame hydraulic press