INFORMATIVE OIL ANALYSIS
Contamination, mixing and ageing of oil: professional oil analyses allow oil-related problems to be detected at an early stage so that they can be rectified before they lead to wear and machine stoppages. HANSA‑FLEX fluid specialists carry out their tests directly on site or in the laboratory, make their recommendations and implement the appropriate measures. They can also install oil condition sensors for continuous fluid monitoring.
Determine all the information about the oil
A check-up of your hydraulic system including a professional oil analysis provides all the important information about your fluid, such as contamination, mixing and ageing. The cleanliness level of the oil is also measured in accordance with ISO 4406. The oil analysis is performed by an accredited and certified independent laboratory. The HANSA‑FLEX fluid specialists interpret the results to produce specific recommendations. In this way you can rectify faults before they fully develop and cause damage.
Systematic damage detection
When damage occurs, you have to act quickly. Experienced HANSA‑FLEX fluid and hydraulics specialists search for the causes directly on site and immediately carry out a professional oil analysis. The results form the basis for detecting damage to components such as pumps, cylinders, hose lines and filters. Then the experts set about the specific measures required to bring your system back into working order. We can also plan and manage other work to keep your system operating smoothly over the long term, such as installing filters or flushing the hydraulics. We also support you in the implementation of preventative maintenance measures.
Comprehensive fluid management
Your oil analysis provides the foundation for optimising your system. It shows up any possible weak points and helps you to rectify them in good time. In addition to performing various measures such as cleaning or drying the hydraulic oil, HANSA‑FLEX Fluid Service can also implement other processes as part of fluid management. From defining the schedule of oil care processes to deciding on the servicing intervals, from monitoring the results of the measures right up to employee training: the experienced fluid and hydraulic specialists at HANSA‑FLEX are available at any time to answer questions and provide information about fluid management.
Oil analyses in the laboratory or on site give definitive information about the condition of the oil and the machine.
Reliable fault detection
Faults such as oil mixing, contamination or water in the oil are detected immediately.
Oil change timing
The optimum oil change interval is determined individually for each machine or plant.
Quality checks after oil changes and performance of warranty services.
Contamination by solids
Contamination of hydraulic oil by solid materials such as dust or particles of metal or seals is one of the most frequent causes of damage. The source of the particles could be unfiltered fresh oil, an inadequate filter design, a poorly filled tank, erosion of components or the entry of dirt particles during assembly. The first step in rectifying this problem is to examine the whole system, including the use of particle counters on site if required. By doing this, you can be absolutely sure of the cause of the damage and take precisely the measures required to prevent the entry of dirt, such as installing filter systems.
Contamination of hydraulic oil with water causes corrosion, cavitation, sludge formation or premature ageing of the oil. Water contamination can be caused by condensation, oil-water coolers, cleaning with steam jets, severe temperature fluctuations, spray water entry or defective cylinder seals. To prevent water contaminating hydraulic oil, HANSA‑FLEX Fluid Service first performs an intensive inspection of the entire hydraulic system looking for possible causes. Then the experts draw up a list of suitable measures, such as the use of desiccant breathers or vacuum dewatering systems and, if you wish, implement them.
Too little oil in the tank, leaking suction lines to the pump or inadequate bleeding: too much undissolved air in hydraulic oil can lead to component damage. Air-enriched hydraulic oil is prone to premature ageing. There is also the risk of bubbles in the oil-gas mixture imploding (cavitation) due to pressure and temperature peaks or exploding under too much compression (diesel effect). From the design of the oil tank to the selection of suitable fluid right up to checking the effectiveness of the air separation components: HANSA‑FLEX’s experienced fluid and hydraulic experts advise you on how to avoid oxidation, cavitation or micro-diesel effects.
High temperatures and shear
Excessive operating temperatures reduce the performance of hydraulic oil. The consequences: ineffective additives, accelerated oil ageing, acid formation in the oil and, last but not least, damage to components. Extreme pressure and temperature peaks lead to overstressing of the fluid. Excessive stress breaks up the chains of molecules in the oil, which adversely affects its flow characteristics. This can also lead to additives losing their effect, shorter oil change intervals and higher wear on components. Monitoring temperature and pressure, either as part of the oil analysis or using sensors, can be worthwhile in preventing the damaging effects of high temperatures.
Mixing different hydraulic oils often leads to a worsening of their physical properties. Mixing often happens unintentionally when topping up, removing or reattaching equipment or changing the oil. Even combinations of oil with the same classification can result in elastomeric components and hydraulic hose lines swelling, foam formation, less effective air separation or sludge in the oil. Mixing hydraulic oils also results in loss of all rights under the machine manufacturer’s warranty. No combination of oils can be guaranteed to be 100 % problem-free. Therefore, you should always avoid mixing different oils.
Keep an eye on your oil with condition monitoring
- Present state analysis and basic planning
- Definition of limiting values to meet the hydraulic system requirements
- Selection and installation of oil condition sensors
- Configuration and setting up of data transmission paths
- Evaluation and interpretation of measured values
- Manufacture and installation of alarm devices etc.