HENGST FILTERS
1014468B
R928051773
HENGST FILTERS
MATERIAL: R928051773
SUMMARY:
Quantity in stock: 0
The filter element is the central component of industrial filters. The actual filtration process takes part in the filter element. The main filter variables, such as retention capacity, dirt holding capacity and pressure loss are determined by the filter elements and the filter media used in them. Rexroth filter elements are used for the filtration of hydraulic fluids in the hydraulic system as well as for the filtration of lubricants, industrial fluids and gases.
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02 |
03 |
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05 |
06 |
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2.Z |
‒ |
B00 |
0 |
‒ |
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Design |
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01 |
Filter element |
2.Z 1) |
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Size |
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02 |
according to BRFS standard |
025 |
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075 |
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125 |
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Filter rating in μm |
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03 |
Absolute |
Glass fiber material generation 5, non-reusable, not cleanable |
H3PZ |
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H6PZ |
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H10PZ |
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H20PZ |
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Pressure differential |
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04 |
max. admissible pressure differential of the filter element |
330 bar |
B00 |
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Bypass valve |
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05 |
Without |
0 |
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Seal |
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06 |
NBR |
M |
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FKM |
V |
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1) |
For the admissible temperature ranges refer to the “Technical data” |
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general
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Type |
2.Z | 2.Z | 2.Z | ||
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Size |
025 | 075 | 125 | ||
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Weight 1) |
m |
0.09 kg | 0.16 kg | 0.3 kg | |
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Filter rating / mesh size |
3 µm | ||||
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Ambient temperature range |
-10 … +65 °C | ||||
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Operating temperature range |
-10 … +100 °C | ||||
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Storage temperature range 2) |
NBR |
-40 ... +65 °C | |||
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Storage temperature range 2) |
FKM |
-20 ... +65 °C | |||
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Material |
Cover of the filter element |
Polyamide or tin-coated steel or tin-coated aluminum | |||
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Base of the filter element |
Polyamide or tin-coated steel or tin-coated aluminum | ||||
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Support tube of the filter element |
Tin-coated steel | ||||
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Seals |
NBR / FKM | ||||
| 1) | refers to non-woven glass fiber media |
| 2) | max. relative air humidity 65 % |
hydraulic
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Size |
025 | 075 | 125 |
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Filtration direction |
From the outside to the inside | ||
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Maximum pressure differential |
330 bar | ||
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Minimum conductivity of the medium |
300 pS/m | ||
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Hydraulic fluid temperature range |
-10 … +100 °C | ||
Important information on hydraulic fluids!
For more information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! Flame-resistant – containing water: Due to possible chemical reactions with materials or surface coatings of machine and system components, the service life with these hydraulic fluids may be less than expected. Filter materials made of filter paper P must not be used, filter elements with glass fiber material have to be used instead. Bio-degradable: If filter materials made of filter paper are used, the filter life may be shorter than expected due to material incompatibility and swelling.For applications outside these parameters, please consult us!
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Hydraulic fluid |
Classification |
Suitable sealing materials |
Suitable adhesive |
Standards |
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Mineral oil |
HLP |
NBR |
Standard |
DIN 51424 |
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Bio-degradable |
Insoluble in water |
HETG |
NBR |
VDMA 24568 |
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HEES |
FKM |
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Soluble in water |
HEPG |
FKM |
VDMA 24568 |
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Flame-resistant |
Water-free |
HFDU, HFDR |
FKM |
VDMA 24317 |
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Containing water |
HFAS |
NBR |
DIN 24320 |
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HFAE |
NBR |
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HFC |
NBR |
VDMA 24317 |
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Skydrol |
‒ |
EPDM |
Special “H” |
‒ |
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Attainable filtration ratio βx(c) (β value) |
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Typical β values of up to 2.2 barΔp pressure increase at the filter element 1) |
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Filter medium |
Particle size “x” for different β values, measurement according to ISO 16889 |
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βx(c) ≤ 75 |
βx(c) ≤ 200 |
βx(c) ≤ 1000 |
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H3XL |
4,0 μm(c) |
< 4,5 μm(c) |
5,0 μm(c) |
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H6XL |
4,8 μm(c) |
5,5 μm(c) |
7,5 μm(c) |
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H10XL |
6,5 μm(c) |
7,5 μm(c) |
9,5 μm(c) |
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H20XL |
18,5 μm(c) |
20,0 μm(c) |
22,0 μm(c) |
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1) |
Filtration ratio βx(c) for other filter media upon request |
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Filtration ratio ßx(c) dependent on particle size μm(c)
When has the filter element to be replaced or cleaned~^&@@&^~
As soon as the dynamic pressure or the pressure differential set at the maintenance indicator is reached, the red pushbutton of the mechanical/visual maintenance indicator pops out. If an electronic switching element is provided, an electric signal will moreover sound. In this case, the filter element must be replaced or cleaned.
If the filter does not have a maintenance indicator, we recommend exchanging or cleaning filter elements after a maximum of six months.
Filter element exchange
For single filters: Switch off the system and discharge the filter on the pressure side. For installed duplex switch filters: Refer to the relevant maintenance instructions according to the filter type.Detailed instructions with regard to the filter element exchange can be found on the data sheet of the relevant filter series.
Warning:
Filters are containers under pressure. Before opening the filter housing, check whether the system pressure in the filter has been decreased to ambient pressure. Only then may the filter housing be opened for maintenance.
Notice:
Due to the high viscosity, the pre-set signal value of the visual maintenance indicator may be exceeded during cold start. After the operating temperature has been reached, the mechanical/visual indicator can be acknowledged manually. The electrical signal will go out after the operating temperature has been reached. If the maintenance indicator signal is ignored, the disproportionately increasing pressure differential may damage the filter element causing it to collapse. Warranty becomes void if the delivered item is changed by the ordering party or third parties or improperly mounted, installed, maintained, repaired, used or exposed to environmental condition that do not comply with the installation conditions.Filter variables
Filter rating and attainable oil cleanliness
The main goal when using industrial filters is not only the direct protection of machine components but to attain the required oil cleanliness.
Oil cleanliness is defined on the basis of oil cleanliness classes which classify how the amount of particles of the existing contamination is distributed in the operating liquid.
Filtration performance
Filtration ratio ßx(c) (ß value)
The retention capacity of hydraulic filters with regard to the contamination in a hydraulic system is characterized by the filtration ratio βx(c). This variable is therefore the most important performance characteristic of a hydraulic filter. It is measured in the multipass test, and is the average value of the specified initial and final pressure differential according to ISO 16889 using ISOMTD test dust.
The filtration ratio βx(c) is defined as the ratio of the particle count of the respective particle size on both sides of the filter.
Dirt holding capacity
It is also measured using the multipass test and determines the amount of test dust ISOMTD which is fed to the filter medium until a certain pressure differential increase has been reached.
Pressure loss (also pressure differential or delta p)
The pressure loss of the filter element is the relevant characteristic value for the determination of the filter size. These are recommended values of the filter manufacturer or specifications by the filter user. This characteristic value depends on many factors. Mainly: the rating of the filter medium, its geometry and arrangement in the filter element, the filter area, the operating viscosity of the fluid and the flow.
The term “delta p” is often also expressed with the symbol: “Δp”.
When dimensioning the complete filter with filter element, an initial pressure loss is determined which must not be exceeded by the new filter element state on the basis of the aforementioned conditions. The size design of a Rexroth filter element and new complete filter by means of initial Δp or pressure loss may be comfortably completed using our online design software “BOSCH REXROTH FILTERSELECT”.
The following diagram shows the typical press loss behavior of filter elements with different material fineness at different flows for a viscosity of 30 mm2/s.
The diagram shows the typical pressure loss behaviour of filter elements with different filter media at different flow rates.
Rexroth filter elements are tested and quality-monitored according to different ISO test standards:
Filtration performance test (multipass test): ISO 16889:2008-06
Δp (pressure loss) characteristic curves: ISO 3968:2001-12
Compatibility with hydraulic fluid: ISO 2943:1998-11
Collapse pressure test: ISO 2941:2009-04
The development, manufacture and assembly of Rexroth industrial filters and Rexroth filter elements is carried out within the framework of a certified quality management system in accordance with ISO 9001:2000.
Environmental safety and recycling
The used filter element should be disposed of in accordance with the respective country-specific legal regulations of environmental protection.
After completion of the filter life, the components of the filter, in accordance with the respective country-specific legal regulations of environmental protection, are recycled.