

The Power of Predictive Maintenance in Hydraulic Systems: Predicting Failures with Oil Analysis
Hydraulic systems used in industrial facilities today require high performance and precision. The slightest failure in these systems can lead to production downtime and serious costs. For this reason, classical periodic maintenance approaches are now being replaced by predictive maintenance methods. The most basic component of these methods is oil analysis.
As Hidroman, we aim to provide our customers not only with products but also with integrated solutions for system health. Our predictive maintenance service both reduces maintenance costs and extends the life of the systems.
Predictive maintenance is a maintenance strategy that aims to monitor the condition of components in the system before they fail and to determine maintenance needs in advance through data analytics. Its main difference is that:
Type of Care |
Definition |
Preventive Maintenance |
Time-based, periodic control and part replacement |
Breakdown Maintenance |
After the component deteriorates, it is intervened |
Predictive Maintenance |
System health is monitored with real-time data, early diagnosis is made |
Oils used in hydraulic systems do not only provide power transmission; At the same time, it takes on critical tasks such as cooling, sealing, corrosion protection of the system and lubrication of components.
However, over time:
These changes are a harbinger of system failures. Therefore, the oil should be analyzed regularly.
Analysis Parameter |
Explanation |
ISO 4406 Cleanliness Class |
Indicates the amount of particles in the oil. Ex: 18/16/13 |
Viscosity |
It refers to the fluidity of the oil. Extreme low/temperature is a problem. |
Water Content (%) |
Water deteriorates the film thickness of the oil; causes rust and cavitation. |
TAN (Total Acid Number) |
It indicates the level of oxidation in the oil. The increase indicates chemical aging. |
Ferrometric Wear Analysis |
Metal wear particles from parts such as valves, pumps and cylinders are measured. |
Example:
An oil with an ISO 4406 value of 21/19/16 is outside the acceptable cleanliness limits. This indicates abnormal wear, inadequate filtration, or a lack of flushing in the system.
System Density |
Recommended Oil Analysis Frequency |
Heavy-duty / 24/7 operating systems |
Monthly |
Standard industrial applications |
Every 3 months |
Mobile hydraulic systems |
At the beginning and middle of the season |
Systems to be recommissioned |
Before commissioning |
Hidroman recommendation: The frequency of analysis should be customized according to the criticality of the system, environmental conditions and past failure history.
Results from oil analysis:
Provides.
In this way, not only does it prevent breakdowns, but also reduces energy consumption, increases production quality and increases system efficiency.
The services we provide as Hidroman are as follows:
✅ On-site oil
✅ sampling ISO 4406 particle analysis (on-site or in laboratory)
✅ Determination of metal wear (ferrographic analysis)
✅ Viscosity, water ratio and TAN analysis
✅ Technical evaluation report and maintenance recommendations
✅ Filter solutions✅of
3 microns and below Supply of flushing unit and mobile analysis sets
"The system that speaks with data is understood before it breaks down, not after it is silenced."
The hydraulic pump in the rotary table system of one of our customers started to experience a low flow problem before the end of 1 year. In the oil analysis:
These data pointed to both the filtration problem and oxidation caused by high temperatures. Filter systems were updated, flushing was done and the oil was changed. The system has been running smoothly for 6 months.
Predictive maintenance in hydraulic systems is not a luxury, but a necessary investment. Early detection, especially with oil analysis, can extend system life by up to 30% and reduce maintenance costs by 40%.
Hidroman is ready to be your solution partner in predictive maintenance with its technical knowledge and field experience.
Contact us for more information and quotes.
www.hidroman.com.tr