DCF.vn Hydraulic Oil Filter Elements – Custom Manufacturing
In industrial hydraulic systems, a hydraulic oil filter element is not simply a replacement part. It directly affects oil cleanliness, operating stability, and the service life of pumps, valves, cylinders, and actuators. Most hydraulic failures are linked to solid contaminants, water, and oxidation byproducts in the oil. When very small particles pass through critical working clearances, they can cause abrasive wear, surface scoring, valve sticking, reduced lubricant film strength, and a higher risk of unplanned downtime.
Under modern contamination-control practice, oil cleanliness should be evaluated by ISO 4406 rather than by visual inspection. Particles in the 4µm, 6µm, and 14µm ranges are almost invisible to the naked eye, yet they are large enough to damage precision clearances in hydraulic equipment. For this reason, DCF.vn focuses on custom manufacturing hydraulic oil filter elements based on installation size, working structure, filter media, and actual pressure conditions, helping customers maintain the oil cleanliness level required for system reliability and equipment performance.
ISO 4406 and Its Importance in Hydraulic Oil Filter Element Selection
ISO 4406:2021 is the international standard used to express the level of solid particle contamination in hydraulic and lubricating fluids through a three-number cleanliness code such as 18/16/13 or 16/14/11. These three numbers represent the quantity of particles greater than or equal to 4µm, 6µm, and 14µm in each milliliter of oil. In practice, these particle sizes directly affect the life of piston pumps, proportional valves, servo valves, bushings, bearings, and other precision hydraulic surfaces. [ISO 4406:2021] and [ISO 4406] define this coding method, while typical industrial guidance also links these particle classes to hydraulic reliability.
An important feature of ISO 4406 is that the scale is logarithmic. A one-code increase means the particle concentration has approximately doubled. In other words, what appears to be a small change in cleanliness code can represent a major change in wear rate, valve stability, and equipment life. For many general industrial hydraulic systems, cleanliness is commonly controlled around 18/16/13, while systems using proportional valves, servo valves, or highly precise components often require cleaner oil such as 16/14/11 or better. [ISO 4406], [ISO 4406 Hydraulic Oil Cleanliness], and [ISO Cleanliness Codes Explained] all describe the logarithmic nature of the code and the use of tighter targets for more sensitive hydraulic components.
For a hydraulic oil filter manufacturer such as DCF.vn, ISO 4406 is not only a reference for evaluating oil cleanliness. It is also a practical guideline for consulting and producing custom filter elements. Based on the cleanliness target of each system, DCF.vn can work with customers to select a filter-element structure that matches the installation position, mechanical design, filter media, pressure conditions, and real operating environment. As a result, the finished element is not only dimensionally accurate, but also more suitable for contamination control in each industrial application.
On that basis, DCF.vn develops custom hydraulic oil filter element solutions for many machine configurations, helping customers match the required mechanical dimensions while selecting suitable media for actual operating conditions, including pleated paper, pleated stainless steel, felt wrapped with stainless steel mesh, high-pressure configurations, double protective mesh layers, and specialized structures for return oil and drying systems.
Custom Hydraulic Oil Filter Groups Manufactured by DCF.vn
Group 1 – Wet Press / Glue Press Oil Filters
This filter group is used in wet press and glue press systems, where working oil must be kept stable to limit contamination entering pump assemblies, valves, and return lines. In these positions, the right filter-element configuration helps maintain oil cleanliness, reduce wear caused by solid particles, and support longer operating cycles. DCF.vn can manufacture this group in pleated paper or pleated stainless steel depending on flow rate, filtration requirement, and actual service conditions.
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OD88 – Sin 44/0 – H250mm
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OD86 – ID50 – H295mm
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Material: Pleated paper or pleated stainless steel
Group 2 – High-Pressure Slitting Oil Filters
This group is used in high-pressure slitting systems, where filter media strength and differential-pressure resistance are especially important. In this environment, poor oil cleanliness can accelerate pump wear and damage precision control components. DCF.vn mainly manufactures this group with pleated stainless steel to meet requirements for high-pressure resistance, dimensional stability, and reliable performance in continuous-duty operation.
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OD74 – Sin 33/0 – H232mm
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OD74 – Sin 31/0 – H170mm
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OD102 – ID74 – H440mm
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Material: Pleated stainless steel for high-pressure service
Group 3 – Optical Press Oil Filters
For optical press systems, the filter element must provide the right mechanical fit, stable flow performance, and contaminant retention suited to operating requirements. In sensitive assemblies, dirty oil can cause valve stiction, delayed response, and higher internal heat from friction losses. DCF.vn manufactures many optical press filter configurations, from pleated paper and pleated stainless steel to felt wrapped with stainless steel mesh or other custom-built structures, supporting the cleanliness targets of each hydraulic system.
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OD68 – Sin 34 – H168mm
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OD90 – ID48 – H325mm
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OD100 – ID60 – H400mm
Group 4 – Lifting / Return Oil / Drying Filters
This group serves lifting, return-oil, and drying processes, where return flow often carries a higher level of contamination generated during operation. If filtration is not adequate, particles and oxidation byproducts may return to the reservoir, continue circulating, and intensify the chain of wear throughout the system. DCF.vn can manufacture these elements to match actual installation requirements, including sinusoidal designs, external-thread designs, and square-pan return-oil drying filters, helping customers optimize both filtration performance and service life.
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OD74 – Sin 33 – H248mm
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OD150 – Thread 70 – H425mm
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Return drying filter 188×188 – D142 – H236mm
Selected Hydraulic Filter Element Codes Manufactured by DCF.vn
Wet Press / Glue Press
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DC-HFU-88-S44/0-250-CE/21 – Wet press oil filter, OD88 x Sin 44/0 x H250mm, pleated paper
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DC-HFK-88-S44/0-250-CE/21 – Glue press oil filter, OD88 x Sin 44/0 x H250mm, pleated paper
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DC-HFK-86-50/0-295-SS/P/217 – Glue press return oil filter, OD86 x ID50/0 x H295mm, double mesh
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DC-HFU-86-50/0-295-SS/P/218 – Wet press return oil filter, OD86 x ID50/0 x H295mm, double mesh
High-Pressure Slitting / Roll Applications
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DC-HF-74-S33/0-232-SSP/P/24 – High-pressure slitting oil filter, OD74 x Sin 33/0 x H232mm, pleated stainless steel
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DC-HF-74-S31/0-170-SS/P/25 – High-pressure slitting oil filter, OD74 x Sin 31/0 x H170mm, pleated stainless steel
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DC-HF-88-S45/0-320-SS/P/26 – Roll oil filter, OD88 x Sin 45/0 x H320mm, pleated stainless steel
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DC-HF-88-S44/0-250-CE/27 – Roll oil filter, OD88 x Sin 44 x H250mm, pleated paper
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DC-HF-86-57/LP-395-SS/P/215 – Roll return oil filter, OD86 x ID57/LP x H395mm
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DC-HF-102-74/LP-440-SS/P/216 – Slitting return oil filter, OD102 x ID74/LP x H440mm
Optical Press
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DC-HF-68-S34/0-168-SS/P/28 – High-pressure optical press oil filter, OD68 x Sin 34/0 x H168mm, pleated stainless steel
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DC-HF-90-48/0-325-CE9 – Optical press oil filter, OD90 x ID48/0 x H325mm, pleated paper
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DC-HF-100-60/0-400-SS/P10 – Optical press oil filter, OD100 x ID60/0 x H400mm, felt wrapped with stainless steel mesh
Lifting / Drying / Return Oil
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DC-HFN-74-S33/0-248-SS/P/23 – Lifting oil filter, OD74 x Sin 33/0 x H248mm, pleated stainless steel
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DC-HF-150-R70N/0-425-SS/P/211 – Pre-drying oil filter, OD150 x external thread 70/0 x H425mm, pleated stainless steel, double perforated stainless steel mesh
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DC-HFMV188-D142-236-SS12 – Drying return oil filter, stainless steel square-pan mesh tube 188x188, D142 x H236mm
Other Manufactured Codes
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DC-HF-118-S50/10-280-SS/P/213 – Hydraulic filter CK 10815-10817, OD118 x Sin 50/10 x H280mm
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DC-HF-144-R48N/0-360-SS/P/214 – Filter CK 10816, OD133 x external thread 48/0 x H360mm, pleated stainless steel, double perforated stainless steel mesh
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DC-HF-47-25/0-93-CE19 – Heat dissipation oil filter, OD47 x ID25/0 x H93mm, pleated paper
With an approach based on oil cleanliness and equipment reliability, DCF.vn does more than manufacture filter elements to the correct dimensions. We also support the selection of the right structure and media for the actual working conditions of each system. This is especially important for plants that need to maintain or improve oil cleanliness targets under ISO 4406, reduce premature wear, minimize valve sticking, protect pumps, and extend hydraulic oil life.
DCF.vn accepts custom manufacturing of hydraulic oil filter elements based on samples, drawings, and required dimensions for factories and industrial hydraulic systems. For orders or technical consultation, please contact DCF.vn Filter Manufacturing Factory at 02862702191, address: No. 33, Street 17, Hiep Binh Ward, Thu Duc. DCF.vn is ready to advise and manufacture the right filter element configuration for each industrial hydraulic application.
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