2023-11-30

What Are The Reasons Why The Hydraulic Cylinder Cannot Drive The Load?

When the seals become wrinkled, squeezed, torn, worn, aged, deteriorated, or deformed, it is necessary to replace them with new seals. Excessive wear of piston seals can occur due to improper adjustment of the speed control valve, excessive back pressure, improper seal installation, or contamination of hydraulic oil. In such cases, adjusting the speed control valve, following installation instructions, and improving seal quality can help address the issue.
Leakage in the hydraulic circuit can result from problems with valves and hydraulic pipelines. To address this, it is important to conduct a thorough inspection and remedy any leaks in the hydraulic connecting pipelines. Operating the reversing valve, starting the pump, and checking for leaks after starting, as well as repeatedly starting and stopping the system to raise oil temperature, can assist in identifying and resolving leakage issues.
Hydraulic oil bypassing the overflow valve and returning to the oil tank can occur if the valve core becomes jammed due to dirt or debris, causing the overflow valve to remain open. This results in direct oil flow back to the tank through the overflow valve bypass, leading to hydraulic cylinder failure. In cases where the load is too large, even if the relief valve is adjusted to the maximum rated value, the cylinder may still not receive the required thrust for continuous operation, causing it to remain stationary. Conversely, if the adjustment pressure is too low, the cylinder will lack the necessary pressure to generate the required thrust. In both scenarios, it is necessary to check and adjust the relief valve accordingly to address the issue.
Regular inspection, maintenance, and adherence to proper operating procedures are essential to prevent and address these common hydraulic cylinder issues.

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