Sheet Metal · 2023年2月28日

How to deal with the plunger of the four-column hydraulic press seized in the cylinder bore

The four-column Hydraulic Press will inevitably have one or other failures during use. The main cause of the four-column hydraulic press plunger seizure is the deformation of the cylinder bore. Usually, the center steel ball on it falls off during assembly. When the pump is started, the end face of the cylinder is clamped, causing the cylinder bore to deform and bite the plunger. In addition, the center return spring is broken and the cylinder supporting roller bearing remains damaged, which can also cause the plunger of the horizontal hydraulic press to be seized or the pump to be damaged.

When the plunger of the four-column hydraulic press is seized to death, all the main parts such as the cylinder block must be removed for inspection. Moreover, the possibility of repairing damaged parts is often not large, so replacement methods are usually used to eliminate them.

The pump of the four-column hydraulic machine has been running for a long time. Due to the excessive wear of the plunger pair, the matching clearance is too large, which makes the pump pressure unable to rise or insufficient oil output when the pump is under high pressure. The reasons for the above phenomenon: In addition to the oil factor, the plunger has low heat treatment hardness, unqualified material, and high roughness on the cylindrical surface. But the characteristic when this phenomenon occurs should be more uniform wear.

The above content is how to deal with the four-column hydraulic plunger bite in the cylinder hole, I hope it can be helpful to everyone. If you want to know more about hydraulic press, please call Dongguan China Machinery Co., Ltd. We will serve you wholeheartedly.

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