Бренды
Filter element 65.
Filter element 65.
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Size 1300 … 2600
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Maximum collapse pressure rating 210 bar 15 bar
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Filter rating 3 µm
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Operating temperature range -10 … +100 °C
- Special highly efficient filter media
- Hohe Schmutzaufnahme und Filtrationsleistung durch mehrlagige Glasfasertechnik bei gleichzeitig niedrigem Anfangsdifferenzdruck (ISO 3968)
- Low initial pressure differential (ISO 3968)
- Funktionsfilterelement mit zwei Filtrationsstufen für die Windkraft
- With integrated bypass valve
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Size |
1300 | 2600 | |||
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Weight |
m |
4.2 kg | 9.2 kg | ||
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nominal filter rating |
3 µm | ||||
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Ambient temperature range |
-40 … +50 °C | ||||
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Operating temperature range |
-10 … +100 °C | ||||
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Material |
Filter element |
Polyamide or tin-coated steel | |||
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Filter element |
Polyamide or tin-coated steel | ||||
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Filter element |
Tin-coated steel | ||||
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Seals |
NBR | ||||
The filter element is the central component of a filter. 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 lubricants in wind turbines. The series 65. filter elements consist of two separate filter elements which are flown through one after the other and a bypass valve.
In order to achieve the cleanliness class, the outer filter element made of non-woven glass fiber media (1) serves as the main filter. The inner filter element (2) made of wire mesh serves as protective filter in case of a cold start. The outer filter element (1) consists of a multi-layer combination of star-like pleated filter media which are laid around a perforated support tube. The bypass valve (3) is located in the cover of the filter element. The bypass valve has a cracking pressure of 4 bar [58 psi]. The inner filter element (2) is set-up in the same way, except for the filter element mat.
Possible operating conditions:
1. Normal operation with a clean filter element
The fluid flows through the outer filter element (1). The bypass valve is closed. When the fluid flows to the filter outlet, it passes the inner filter element (2).
2. Cold start or highly contaminated outer filter element:
Only a very small portion of the fluid flows through the outer filter element (1). Almost the entire flow passes through the bypass valve, which is completely open. Through the open bypass valve, dirt particles get to the clean side of the outer filter element (1). But the inner filter element (2) still retains any coarse particles. Therefore, the downstream components are still protected, even under these conditions.