How to Select Hydraulic Filters for Different Industrial Applications

Hydraulics are used in many aspects of today‘s industry. From construction machinery and agricultural systems to manufacturing and mining equipment the power of hydraulics enables this equipment to operate efficiently and safely. However no matter how good the machinery power is it cannot operate effectively if the fluid is contaminated. The presence of dirt, metal chips, water and other debris can cause damage to sensitive components and massively reduce efficiency leading to downtime and expensive repairs. For this reason it is important to choose the correct hydraulic filters to suit your machinery.

A knowledge of the operation of hydraulic filters and selecting the type suitable for particular industrial applications will enable companies to maximize outputs and minimize maintenance expenses.

Why Hydraulic Filters Are Important

Hydraulic fluid is a power transmission medium and also lubricates components in the hydraulic system. The intrusion of foreign material into the fluid can significantly contribute to the wear and tear of pumps, valves, cylinders and motors. microscopic particles can cause extensive damage over an extended period.

Good quality hydraulic filters can eliminate these contaminants from oil before they cause damage to system operation. Having good filtration increases machinery dependability, reduces unexpected repair costs and aids to keeping steady operating efficiencies. In some industries where equipment is subjected to tough conditions filtration has an important role in maintenance.

Understanding Different Types of Hydraulic Filters

It is helpful to understand the range of filters available before a choice is made:

Suction Filters

Suction filters are located in between the hyd. Re-servoir and the pump. Their function is to block large particles entering the pump, but are usually not built to trap smaller particles.

Pressure Filters

These type of pressure filter are placed after the pump and also used to protect hydraulic components from any debris from the fluid. These are largely used in high performance systems.

Return Line Filters

Return line filters are installed on the return line to the reservoir. They trap debris caused by the components while working.

Offline Filtration Systems

These are sometimes called self-contained kidney-loop filtration systems. These are hydraulic systems that are separate from the main hydraulic system. The fluid is constantly being filtered through kidney-loop filtration systems, which is perfect if you need a very clean load of hydraulic oil.

Consider the Operating Environment

Operational environment must be considered when choosing the filter. For example equipment operated in dusty construction sites, mining or agricultural fields is going to come under much more contaminate than equipment operated indoors.

In severe conditions, it is important to utilize a filter that can withstand the higher dirt load and rigorous environment in which it operates. Use the appropriate filter for your operating conditions, to improve performance and increase service life.

Evaluate Filtration Efficiency

The termmicron ratingdenotes a filters efficiency in removing particles of a certain size. A micron is a unit of measurement.

Choosing a lower micron number is the best as it enables the capture of a wider range of particles and resulted in cleaner fluid. There are some disadvantages in having the lowest micron, as very fine micron number filter can choke if they are not appropriate matched for the system

Select filters equivalent to the required cleanliness specified by the manufacturer. The filter must be compatible with the application. The filter efficiency should be appropriate – too fine and it will affect system operation, too coarse and it will not protect.

Match the Filter to System Pressure

There are different pressure ranges within hydraulic systems and if working on industrial machinery, which tend to use high pressure systems, then it is important to select filters that will accept this range.

In addition, pressure rated filter housings and filter elements are available to prevent failures due to pressure transients. Oversized or undersized filters can damage filter elements, restrict flow rates, or cause the system to fail altogether.

Always check the maximum operating pressure before selection.

Assess Flow Rate Requirements

Flow rate is also an important consideration when selecting hydraulic filtration solutions. The filter must be capable of handling the required flow of fluid through the system without inducing an increased pressure drop.

Filters that are too strict will also cause a loss of efficiency and increased stress on hydraulic components. Conversely, a larger than required filter can be unnecessarily costly.

Correct sizing provides the best filtration as well as keeping hydraulics functioning smoothly.

Consider Fluid Compatibility

Different types of fluid are used in various hydraulic systems, for example; mineral oils, synthetic fluids and biodegradable hydraulic oils. It should be noted that not all filter media will be suitable for each fluid.

Choose appropriate filter media, seals and housing materials according to the fluid of the system. Also ensure the filter will not be prematurely degrade due to chemical incompatibility, etc.

The other existing fluids to be used in the various equipment of the plant determine if a water absorbing filter is compatible with others. In the common industrial process facilities different kinds of fluids are utilized, therefore the check of compatibility becomes a necessary step in filter choosing.

Industry-Specific Applications

There is a diverse range of hydraulic filtration needs within different industry sectors.

Manufacturing Facilities

The equipment used in manufacturing will generally involve precision hydraulic control such as that shown by the servo systems and directional controls. It may also involve a fine filtration stage to prevent contamination causing wear to the valve and actuators.

Construction Equipment

Excavators, loaders and other equipment work in very dirty environments with very high dirt levels. Hardwearing, high dirt-holding capacity filter pleats are usually favored.

Mining Operations

Mining equipment operates in harsh environments such as dust, vibration and over burdened loading. The control of these environments using efficient filtration protects assets and reduces downtime.

Agricultural Machinery

Tractors, harvesters and irrigation equipment rely on hydraulic filtration for high productivity through prolonged, challenging seasonal runs.

The Connection Between Hydraulic Filtration and Coolant Management

Some industrial sites not only seek to understand and control their hydraulic fluid quality, but also their machining fluids and process liquids. Modern industrial coolant recycling system is frequently combined with filtration technologies to optimize fluids management.

These filtration systems aid in contaminant removal from coolants and allow for improved coolant life, as well as a potential reduction in disposal costs. Like hydraulic filtration, proper coolant recycling can help improve equipment performance through resued coolants, while improving operational efficiency.

Companies which purchase hydraulic filtration as well as industrial coolant recycling systems generally have better maintenance costs and process dependability in many process sections.

Maintenance and Replacement Considerations

Choosing an appropriate filter is just one part of the process. Inspection and timely change is equally important.

Monitoring pressure readings, contamination levels and filter life intervals ensures system cleanliness. If filter servicing is ignored, it can lead to reduced filtration efficiency and component damage.

The implementation of a preventive maintenance program will guarantee the proper operation of the filtration systems during the lifetime of the equipment.

Conclusion

The selection of the most suitable hydraulic filters will depend on operating conditions, working pressure and flow, filtration efficiency, and fluid properties. The application has no specific design as all industrial plants act differently to different working requirements.

Through use of the appropriate filtration methods and related technologies like industrial coolant recycling systems, businesses will see greater reliability of equipment and decreased downtime as well as improvement in the long term operating costs. For those in need of effective filtration products and know-how, East Coast Filter can supply the necessary equipment and support to keep your industrial systems clean and efficient.