Filter kits
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Hydraulic filter kit, complete protection of hydrostatic systems
Comprehensive servicing of agricultural, construction machines, and industrial equipment requires the simultaneous replacement of filtering elements operating in the power and lubrication systems. Ready-made hydraulic filter kits allow for a full inspection and filter replacement according to the engine hours (mth) schedule provided by the machine manufacturer. Using a dedicated kit eliminates the risk of missing an important filtration section, protecting the pump, valves, and actuators from accelerated mechanical wear. HYDRON's offer includes specialized filtration packages designed for tractors, loaders, excavators, and stationary hydraulic power systems.
Application and technical characteristics of filter kits
The cleanliness of the working fluid is the fundamental factor determining the efficiency of hydrostatic systems. The introduction of solid contaminants (micro-shavings, dust, deposits) causes cavitation erosion and abrasive wear of precision friction pairs in distributors and pumps. HYDRON filtration kits are assembled to provide full support for all machine circuits:
- Suction and pre-filtration: Protecting the suction side of the main pump against larger particles, preventing harmful cavitation.
- Return filtration (drainage): Cleaning the oil returning from actuators and motors to the main tank, stopping particles generated during the operation of consumers. For tank systems, an excellent addition to the installation is RFM tank-mounted return filter.
- Pressure filtration: Protecting control elements, including proportional valves and servo valves, against microscopic particles under high pressure.
- Fuel and engine oil filtration: Fuel and oil elements included in the service kits guarantee trouble-free operation of the power unit. An example of a dedicated package for agricultural machinery is filter kit for 300mth MF series 5S, 5700 and 4700.
Why choose HYDRON hydraulic filter kits?
All elements included in HYDRON filtration packages are produced in accordance with strict quality standards (ISO 4406, ISO 2941, and DIN 24550). The filter element, made of multi-layer synthetic fiber or special filter paper, is characterized by a high beta ratio and optimal dust holding capacity. By choosing a ready-made kit at the HYDRON store, you are assured of full dimensional and thread compatibility, which shortens machine downtime during periodic technical inspections. For powering hydraulic lines, the following also fits perfectly AMF 151 inline hydraulic return filter.
Technical specification and operating parameters
Technical parameter |
Range / Value |
Reference standard |
|---|---|---|
Filtration accuracy (μm) |
3 μm, 6 μm, 10 μm, 25 μm, 60 μm |
ISO 16889 / ISO 4406 |
Maximum working pressure |
from 10 bar (return) up to 420 bar (pressure) |
DIN 24550 / ISO 2941 |
Working media |
Mineral oils, synthetic oils, glycols, diesel fuel |
ISO 6743-4 |
Operating temperature range |
from -30°C to +120°C |
ISO 2943 |
By-Pass opening pressure |
1.75 bar / 3.5 bar / 6 bar |
Manufacturer specification |
Alternative markings and replacements
The filter elements included in the kits correspond to OEM markings and replacements of recognized manufacturers of filtration elements (including Donaldson, Baldwin, Fleetguard, Mann-Filter, MP Filtri, Sofima):
- Massey Ferguson: 300 mth inspection kits for the MF 5S, 5700, and 4700 series.
- Donaldson / Fleetguard: Replacements for spin-on and cartridge elements with reference numbers such as P959219 or X220184.
- MP Filtri / Sofima: Equivalents of elements for return and suction filters of the RFM, RFA, and AMF series.
Frequently Asked Questions (FAQ)
How often should the hydraulic filter kit in a machine be replaced?
The replacement interval depends on the machine manufacturer's recommendations and environmental conditions. Typically, replacement is performed every 250–500 engine hours (mth) or at least once a year. If the filter clogging indicator is activated, the replacement should be carried out immediately to prevent the by-pass valve from opening.
What does the By-Pass valve in a hydraulic filter mean?
The By-Pass (relief) valve protects the housing and the element from destruction under the influence of increased differential pressure. The valve opens during a cold start of the system or when the element is clogged with contaminants, which protects the installation from interrupting the continuity of lubrication.
Do the filter elements correspond to the standards of machine manufacturers?
The elements included in HYDRON kits are precision replacements made with strict dimensional tolerances and socket connection sealing requirements, fully meeting the requirements of leading equipment manufacturers.