What are the most common causes of hydraulic system failure?

1) Fluid contamination:

One of the main causes of hydraulic system failure is due to fluid contamination. No matter which type of fluid is used, if it is contaminated by dust, dirt or moisture, it will reduce the pump's ability to control system pressure. In turn, this can cause the system to overheat or build up, causing parts to jam and malfunction.

Before use, be sure to ensure that the different components and fluids are clean and suitable for the purpose of use to prevent malfunction.

2) Poor or irregular maintenance:

Service is essential to keep the system running smoothly. It is important to ensure that the oil and filter of the system are properly replaced. Poor or irregular maintenance may cause the system to be contaminated, thereby increasing the wear and tear of the pump and related equipment.

The suction hose between the tank and the pump also needs to be kept in good condition and should be replaced if there are signs of wear.

It is good practice to check the hydraulic unit regularly, check the oil level, clean up spills and report any defects immediately.

3) Abuse and human error:

Proper instruction and training must be provided to anyone who uses applications operated by hydraulic systems. Wrong installation, use of incompatible parts or improper use are all major factors that may cause failure.

4) Environmental and operational factors:

Both temperature and operating conditions can have an impact on the system.

The power unit needs to be installed in a well-ventilated place in order to protect the oil cooler from dust and pollutants.

Does hydraulic equipment operate at high temperatures? If so, close attention needs to be paid to the type of fluid used in all applications and special seals need to be installed. Always avoid using mineral oils in high temperature applications. These mineral oils are refined from crude oil and have a flash point, which means they will burn at a specific temperature.

If the hydraulic equipment is operating in a cold environment, a tank heater may need to be installed to maintain fluid viscosity. Too thick or too thin hydraulic fluid can damage the system.

Aggressive working conditions may also stress the system, making it prone to failure. External shock and vibration can cause surge and cavitation between the water tank and the pump inlet. This can be avoided by correctly installing the power unit on a special anti-vibration unit.

The hydraulic oil tank also needs to be installed higher than the pump and kept as close as possible.

Regardless of the application, hydraulic systems are inevitable at some point. However, if you ensure that all maintenance procedures are performed regularly and that the appropriate components are installed or replaced correctly, problems can be avoided. If you are unsure of anything, don't be afraid to ask your industry colleagues or hydraulic professionals for help and advice.

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