Reliable Protection | Extended Service Life | Lower Costs
ClearFilter Hydraulic Oil Filter Elements
Enhance Your Hydraulic System
High precision & large dirt holding capacity
Designed for high pressure and high temperature
Reliable replacement for Hydac, Parker, Eaton
Extend filter life, lower maintenance costs
Choose the ClearFilter hydraulic oil filter manufacturers
In the oil filter hydraulic system, the cleanliness of the fluid determines the life of the equipment.ClearFilter Hydraulic Filter Elements were developed by the team of filtration industry expert Steve Shi, and as a specialized hydraulic filter supplier, we offer a wide selection of hydraulic filter types.
Worry-free replacement
compatible with Parker, Hydac, Eaton, MP Filtri and other mainstream brands of cartridges
Flexible customization
OEM/ODM, size, interface, precision can be customized, no minimum order
Fast shipping
spot models shipped within 2 days, customized products delivered in 3~7 days
Long-lasting durability
β-value ≥ 200, low-pressure loss design, high pressure resistance without deformation, prolonging the use of the equipment cycle
Quality assurance
provide ISO 16889 test reports, material inspection reports, quality traceable
ClearFilter Hydraulic Oil Filter Cartridge — Designed for Easy Decision
Universal compatibility, easy to replace
adapted to Parker, Hydac, Eaton and other mainstream brands of cartridges, eliminating the need for modification troubles
Extra-long replacement cycle, cost savings
optimization of the pleat design, significantly increase the dirt-holding capacity, reduce the frequency of downtime and maintenance expenses
Flexible delivery, rapid response to demand
standard models in stock, support for non-standard sampling requirements Quality control, procurement worry-free: each filter is 100% factory tested to ensure that the delivery is ready for use, reliable performance Flexible delivery, quick response to demand: standard models are shipped directly and non-standard sampling is supported to meet the requirements of different project cycles.
Quality control, worry-free purchasing
each cartridge is 100% factory tested to ensure that it is delivered ready for use and has reliable performance.
Omni-directional technical support, professional matching of the program
we provide selection advice, differential pressure calculation and OEM drawing docking services to help projects land efficiently.
The function and importance of hydraulic oil filter cartridge
In the hydraulic system, the fluid not only bears the power transmission, lubrication, cooling, sealing and other key functions, but also very easy to be mixed with metal chips, oxides, dust and other pollutants in the operation process. If these pollutants are not filtered in time, they will lead to accelerated wear and tear of pumps, valves, servo mechanisms and other precision parts, and even damage, directly affecting the reliability of the system and equipment life.
ClearFilter hydraulic filter elementsaccurately intercepts all kinds of solid particles and effectively prevents pollutants from circulating back to the hydraulic system to help achieve:
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Extend the life of the equipment and reduce the risk of long-term investment
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Reduce failures and downtimes to improve the production capacity and project progress
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Optimize the efficiency of the system to improve the response speed and stability of operation
application of hydraulic oil filter cartridge
Hydraulic oil assumes multiple functions in the system, such as power transmission, lubrication, cooling and sealing. Since hydraulic systems are often exposed to high pressure, high temperature and pollution, hydraulic oil must have excellent performance to ensure stable system operation.
ClearFilter hydraulic oil filter element is designed for high efficiency filtration, widely used in suction line, pressure line, return line and bypass system, effectively intercept impurities, protect pumps, valves and other key components, help hydraulic system:
· Keep the oil clean, prolong the life of the equipment
· Reduce the failure rate and downtime losses
· Optimize the system performance, prolong the oil change cycle
· Selecting a high-quality cartridge is the key guarantee for the long-term efficient operation of the hydraulic system.
ClearFilter's hydraulic oil filter types
According to different installation locations, types of filters in hydraulic system is divided into: suction line filter element, high pressure line filter element, return line filter element and circulation filter element. Each kind of filter element undertakes the key protection task to guarantee the efficient and reliable operation of the hydraulic oil filter system.
ClearFilter’s portfolio covers all these types, with custom configurations available depending on application needs and pressure ratings.
| Filter Type | Installation Position | Main Function | Key Features |
|---|---|---|---|
| Suction Line Filter Element | Pump suction line | Filter residual contaminants from the tank and airborne impurities; protect the pump | Low precision (100~180μm), low resistance, high flow, strong dirt holding capacity, equipped with bypass valve |
| High Pressure Line Filter Element | Pump outlet pipeline | Remove contaminants in suction oil; protect critical hydraulic components like servo valves and slide valves | High precision (5~10μm), high cleanliness, no fiber shedding |
| Return Line Filter Element | System return line | Remove internally generated or external contaminants before oil returns to the tank; control system cleanliness | Permissible pressure drop 0.3~0.5MPa, adaptable to pulsation or shock, filtration precision based on oil cleanliness requirements |
| Circulating Filter Element | Oil tank circulation loop | Continuously purify hydraulic oil even during system shutdown; maintain ultra-clean conditions | High filtration precision, ideal for systems requiring extremely high cleanliness |
Hydraulic Oil Filter Elements Structure Form and Specifications
Our filter elements are available in a wide range of hydraulic filter dimensions, including diameters from 50mm to 120mm and lengths from 100mm to 300mm,including custom fit hydraulic filter element by size.
| Outer Diameter | Filtration Accuracy (μm) | Filter Length | Seal Material | Connection Type |
|---|---|---|---|---|
| 4", 6" etc. | 3, 5, 7, 10, 12 etc. | 8", 16", 20", 36" etc. | Nitrile Rubber, Fluororubber | Threaded, Quick Connect, Snap-on |
ClearFilter Test Standards and Quality Assurance
Every hydraulic oil filter cartridge is fully tested before it leaves the factory and meets the following international standards:
| Test Item | Standard Code | Description |
|---|---|---|
| Structural Integrity | ISO 2942 | Check filter media and end cap bonding integrity |
| Burst Resistance | ISO 2941 | Ensure no rupture under high pressure |
| Filtration Efficiency / Beta Ratio Test | ISO 16889 | Verify particle retention ability and dirt holding capacity |
| Flow / Pressure Drop Curve Test | ISO 3968 | Evaluate flow vs. pressure drop performance |
| Material Compatibility Test | ISO 2943 | Test filter resistance to various hydraulic fluids |
What is a hydraulic filter element ?
A hydraulic filter element is a replaceable component used in hydraulic systems to remove contaminants, particles, and moisture from hydraulic oil.
It helps maintain oil cleanliness, ensures system reliability, and extends the service life of hydraulic components.
At ClearFilter, backed by over 10 years of filtration experience and supplying China’s nuclear power sector, we understand that selecting the right filter is key to long-term system reliability and efficiency.
Table of Contents
What material is used in hydraulic oil filters?
Hydraulic oil filters are made from materials selected for their filtration efficiency, pressure resistance, and chemical compatibility.
Common materials include:
1.Stainless steel mesh or sintered metal – Durable, washable, used in high-pressure or high-temperature systems
2.Synthetic fiber (polyester, nylon) – High dirt-holding capacity, used in standard industrial applications
3.Cellulose filter paper – Cost-effective, disposable, suitable for low-pressure return lines
4.PTFE or polypropylene – Resistant to chemicals and high temperatures, used in special fluids or clean environments
5.Ceramic – Extremely fine filtration and heat resistance, used in extreme conditions
What are the components of a filter element ?
A filter element typically consists of several key components that work together to trap and retain contaminants:
Filter media: The core material that captures particles (e.g., cellulose, synthetic fiber, stainless steel)
Support cage/core: Provides structural strength and prevents collapse under pressure
End caps: Seal both ends of the filter media and hold it in place
Center tube: Supports internal flow and reduces pressure drop
Seal or gasket: Ensures tight sealing between the filter and the housing
How to clean a hydraulic filter element？
To clean a hydraulic filter element, follow these basic steps:
Turn off the system and relieve pressure.
Remove the filter element from the housing.
Clean with compressed air, solvent, or ultrasonic cleaner based on material type.
Inspect for damage.
Dry and reinstall properly.
How to Select the Right Hydraulic Oil Filter Element
Proper filter selection involves:
Defining system pressure, flow, and target cleanliness levels (ISO 4406)
Matching appropriate filter media
Evaluating allowable initial pressure drop
Ensuring chemical and thermal compatibility
The hydraulic oil filter assembly includes the filter element, housing, bypass valve, and sealing components. ClearFilter offers both standalone filter elements and complete assemblies for various hydraulic systems.
ClearFilter’s technical team, led by Steve Shi—an expert in filtration material development and nuclear filtration project execution—offers free consultation and testing to help customers make optimal choices.
Choosing the right hydraulic oil filter element is essential for ensuring system longevity, minimizing downtime, and reducing maintenance costs.
ClearFilter, founded by filtration expert Steve Shi, stands at the forefront of industrial filtration solutions, with decades of hands-on experience in media development, filter production, and system optimization.
Whether you’re a direct end-user, an engineering contractor, or a professional distributor, we are committed to providing tailored, high-performance filtration solutions—with no MOQ limits, full testing support, and customer-centric customization options.
We’ve supported over 200 projects, shipped products to more than 20 countries and regions, and served over 80 clients worldwide.
ClearFilter Hydraulic Oil Filter Elements FAQs
Yes, we support the standard Hydac, Parker, MP Filtri and other brands, 1:1 restore the size and performance.
We recommend replacing the filter element every 500–1000 hours of operation, or based on contamination levels. Regular hydraulic filter replacement helps prevent system failure and prolongs equipment life.
We support free samples, and we can send out the stock on the same day at the earliest.
No MOQ, single piece can also be ordered.
